Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter FAQ

Specification
1. Q: What are the selling points of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: For your reference, the selling points are as follows:
1. Run all day without worrying about electricity costs or circuit breakers.
(1). Highest industry efficiency + AI energy saving: LOW WATT mode ensures cost-effective, all-day usage;
(2). LOW WATT mode: Support multiple appliances running simultaneously without tripping the circuit, thanks to wide-voltage operation;
(3). STABILIZER technology: Ensure stable operation even with fluctuating voltage;
2. Fast cooling and prevent direct cold airflow.
(1). Gentle breeze technology: Soften airflow to prevent direct cold drafts;
(2). 30s rapid cooling + Turbo mode: Instantly maximize cooling capacity with one touch;
3. Xiaomi smart ecosystem experience.
(1). Xiaomi Home App control;
(2). Google & Alexa voice control;
(3). AI engine smart control;
(4). Xiaomi smartphone infrared control;
(5). Full-link OTA upgrades.
2. Q: What is included in the standard package of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The standard package includes:
1. Indoor unit and accessories: Indoor unit × 1, Remote Control × 1, User Manual × 1, Screw Pack × 1, AAA Battery × 2, Remote Control Holder × 1, Groove Strip for Remote Control Holder × 1, and Warranty Notice × 1;
2. Outdoor unit and accessories: Outdoor unit × 1, Connecting Nut × 4, and Drainage Hose × 1.

 
3. Q: What is the appearance of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The appearance is as follows:
1. Geometric shape, avoiding excessive decorative lines, maintaining a minimalist design language;
2. Rounded and friendly design, with a strong homey feel;
3. Equipped with an LED small black screen, maintaining the classic design image of Xiaomi, making the product feel part of a series and recognizable.
 
4. Q: What color is the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The color of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is white + gray.
1. Versatile color, suitable for various home decoration styles;
2. Neutral color to avoid influencing the purchasing decision based on color preference;
3. White-gray color scheme aligns with the Xiaomi brand tone.
 
5. Q: What are the dimensions of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's packaging?
A: Indoor unit packaging dimensions: 915 * 292 * 382 (W * H * D mm). Outdoor unit packaging dimensions: 867 * 625 * 367 (W * H * D mm).
 
6. Q: Is the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter an inverter type?
A: Yes, the air conditioner can intelligently adjust the compressor's operating frequency according to the actual environment, set temperature, and fan speed.
 
7. Q: What are the dimensions of the indoor and outdoor units of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Indoor unit net dimensions: 840 * 200 * 311 (W * H * D mm). Outdoor unit net dimensions: 804 * 551 * 311 (W * H * D mm).
 
8. Q: What is the net weight of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Indoor unit net weight: 9.9kg. Outdoor unit net weight: 21.8kg.
 
9. Q: What is the gross weight of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter (including net weight + packaging + accessories)?
A: Indoor unit gross weight: 11.9kg. Outdoor unit gross weight: 24.4kg.
 
10. Q: Which APP does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter connect to?
A: The product supports connection to the Xiaomi Home App.
11. Q: What is the network connection method of the APP of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: It uses a 2.4GHz Wi-Fi module.
 
12. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support firmware upgrades?
A: The air conditioner supports remote firmware upgrades. It features full-link OTA technology to continuously upgrade the product, providing you with a fresh experience.
Note:
During an OTA upgrade, the indoor unit display lights up as shown in the figure below. Do not power off or perform any operation, otherwise the upgrade can fail. During the upgrade, the air conditioner restarts, stops, and no indicator is displayed. After the upgrade is complete, the air conditioner returns to normal. The whole upgrade process takes 2-15 minutes, please wait patiently. 
 
13. Q: What is the rated voltage of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The rated voltage of the air conditioner is 230V/50Hz.
 
14. Q: What is the voltage fluctuation range of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner can handle a normal voltage fluctuation range of 220~240V. Under extreme conditions, it can operate within a voltage range of 130~265V, however, this will affect the air conditioner’s lifespan.
 
15. Q: What is the rated current of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The rated current of the air conditioner is 3.11A. The maximum operating current is 4.9A.
 
16. Q: What type of power plug does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter use?
A: The air conditioner does not come with a power plug, however, it provides a 1.5-meter-long power cord without a plug.
 
17. Q: What is the cooling power consumption of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The rated cooling power consumption is 700W.
 
18. Q: What are the temperature requirements for the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner operates in cooling mode at normal ambient temperatures of 18°C~43°C.
 
19. Q: Is the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter water-resistant? What is its water resistance rating?
A: The outdoor unit is water-resistant (rainproof), with an IPX4 water resistance rating.
 
20. Q: What certifications does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter have?
A: The air conditioner has the following main certifications:
Safety certification (ST COA), Energy efficiency certification (MEPS), and Wireless certification (SIRIM CC).
 
21. Q: What is the cooling capacity of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner has a cooling capacity of 9K Btu/h (British Thermal Unit).
 
22. Q: What is the recommended usage area for the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The recommended usage area for the air conditioner is 10~15m2.
 
23. Q: What is the energy efficiency level of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner has a variable frequency 5-star energy efficiency rating.
 
24. Q: What refrigerant does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter use?
A: The air conditioner uses R32 refrigerant.
 
25. Q: What is a normal noise of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Indoor unit noise (level 1-level 4-level 7): 23-30-38dB(A). Outdoor unit: 48dB(A). The actual noise level will increase depending on the ambient noise.
Note:
The lowest noise level of the indoor unit is 23dB(A), which is the noise level when the indoor unit is delivering the lowest airflow.
 
26. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter use a DC motor?
A: The indoor motor is an AC motor, with the model number of RA15F1. The outdoor motor is a DC motor, with the model number of ZKFN-37-10-1.
 
27. Q: Is the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter compressor an inverter type?
A: Yes, the air conditioner uses a full DC inverter compressor, with the model number of GSX073CKSF6JV8.
 
28. Q: What brand is the compressor used in the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner uses a compressor from Highly.
 
29. Q: How many rows of condensers and evaporators are there inside the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner uses a single-row condenser and a double-row evaporator.
 
30. Q: How many filters does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter have and what type are they?
A: The air conditioner has one indoor unit filter (at the top of the indoor unit), which is a PETK anti-mold and antibacterial filter.
 
31. Q: Is the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter filter anti-mold and antibacterial?
A: Yes, the air conditioner uses an anti-mold and antibacterial filter.
 
32. Q: What are the length, diameter, and material of the drainage hose of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner's drainage hose is 2 meters long, with a diameter of Φ18mm, made of LDPE + EVA with anti-aging and antioxidant additives.
 
33. Q: What is the length of the high-pressure and low-pressure pipes in the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter packaging?
A: The air conditioner packaging does not include copper connection pipes. The local service provider will provide the appropriate length of connection pipes based on the actual situation. High-pressure and low-pressure pipes are usually the same length.
 
34. Q: What is the size of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter connection pipes (inner and outer diameter)?
A: The air conditioner's copper connection pipe diameters are Φ6mm and Φ9mm. Φ6 pipe’s outer diameter is 6.35mm, with a wall thickness of 0.6 or 0.7mm. Φ9 pipe’s outer diameter is 9.52mm, with a wall thickness of 0.7mm.
 
35. Q: What is the material of the connection pipes between indoor and outdoor units of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The connection pipes between the indoor and outdoor units are made of phosphorus-deoxidized seamless copper tubes, with the material code of TP2M.
 
36. Q: What is the maximum length that the connection pipes of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter can be extended to?
A: The maximum length for extending the connection pipes is 10 meters. If the pipe length exceeds 7 meters, an additional 15g/m of refrigerant should be added to prevent affecting cooling efficiency.
 
37. Q: What is the maximum height difference between the indoor and outdoor units of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter during installation?
A: The maximum height difference between the indoor and outdoor units during installation is 5 meters.
 
38. Q: What is the throttling method of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner uses the capillary tube assembly for throttling.
 
39. Q: What is the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter’s airflow rate?
A: The air conditioner's airflow rate is 620m³/h.
 
40. Q: What is the maximum current of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The maximum operating current of the air conditioner is 4.9A.
 
41. Q: What swing modes does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support?
A: The air conditioner supports both up/down (vertical) and left/right (horizontal) swing modes.
 
42. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support automatic defrosting?
A: This air conditioner is a cooling-only model and does not involve defrosting.
 
43. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support intelligent dry mode?
A: Currently, the air conditioner only supports standard dry mode. Please stay tuned for OTA upgrade notifications, as AI dry mode can be available after a successful update.
 
44. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support battery usage statistics?
A: Yes, battery usage details can be viewed in the Xiaomi Home App. After selecting the specific device, scroll down to check the battery usage statistics.
45. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support anti-direct airflow?
A: The air conditioner is equipped with a soft wind air guide blade. You can use the Air Flow Button to switch between gentle airflow, upward airflow, downward airflow, circulating air, and off.
 
46. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter use an infrared or Bluetooth remote control?
A: The air conditioner uses an infrared remote control.
 
47. Q: What material is the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's screen made of?
A: The air conditioner screen (small black screen) is made of PC material.
 
48. Q: Does the remote control of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter have an LED indicator?
A: The air conditioner remote control does not have an LED indicator.
 
49. Q: What type of battery does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter remote control use?
A: The air conditioner remote control uses AAA batteries.
 
50. Q: How much electricity does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter consume every day?
A: Actual power consumption depends on the operating environment, including ambient temperature and insulation conditions, making it difficult to estimate. To check power consumption, you can go to the Xiaomi Home App.
51. Q: What smartphone brands does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support for connectivity? Are there any requirements for the phone?
A: Both Android and iOS devices can download the Xiaomi Home App. After downloading the APP, you can connect the air conditioner to the internet for remote control. There are no specific requirements for the phone.
52. Q: How to clean the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter, and how often?
A: The internal components of the air conditioner should be cleaned once a year by a professional. The exterior can be cleaned by yourself.
Warnings for cleaning the indoor unit:
1. Before performing the care & maintenance on the air conditioner, make sure the air conditioner is turned off and the power supply is cut off;
2. When performing the care & maintenance on the air conditioner, avoid accidents such as tumbling or falling to avoid injury;
3. After removing the indoor unit panel, do not touch the metal fins of the heat exchanger to avoid injury;
4. Do not clean this product with water. If water gets into the indoor unit, malfunction or electric shocks will occur;
5. Do not use chemicals or solvents such as alcohol, gasoline, lacquer thinner, polishing powder, essential balm, toothpaste or laundry detergent to clean any parts of this product to avoid damage;
6. After cleaning, make sure all parts are completely dry before installing and using them. Avoid direct sunlight.
The specific method for cleaning is as follows:
Use a soft cloth or sponge dipped in clean water or diluted neutral
detergent to wipe the surface of the air conditioner’s body.
Note:
1. Do not apply excessive force when cleaning the indoor unit panel to avoid damage;
2. Do not wipe the panel and remote control casing with wire cleaning balls, brushes, etc. to avoid damaging the casing.

 
53. Q: How to clean the air filter of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter, and how often?
A: It is recommended to clean the air filter every three months. Once the air conditioner is connected to the network, the system will automatically send a cleaning notification.
If you receive a push notification, please follow these steps to clean the filter:
1. Removing the filter: As shown in the figure, open the clips at both ends and the middle of the filter, and pull upward to remove the filter;
2. Cleaning the filter: After the filter is removed, use a vacuum cleaner to remove the dust or rinse the filter with clean water;
3. Reinstalling the filter: Align the clips with the snapping positions and reinstall the filter correctly.

Note:
1. Do not use wire scrubbers or brushes to clean the air filter to avoid damage;
2. Do not wash the unit with water to prevent malfunctions or electric shock hazards;
3. Do not wash the remote control with water to avoid malfunctions;
4. Do not use alcohol, gasoline, lacquer thinner, polishing powder, essential oils, toothpaste, detergent, or other chemical products or solvents to clean the air conditioner, as they will damage the product.
 
54. Q: What type of mold prevention does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter offer? What is the specific standard?
A: The air conditioner uses a PETK anti-mold and antibacterial filter. It has been tested against the following mold strains:
Aspergillus niger (CGMCC3.5487), Chaetomium globosum (CGMCC3.3601), and Penicillium funiculosum (CGMCC3.3875).
Under standard test conditions, after 28 days of cultivation, no significant mold growth was observed.
 
55. Q: How to find the serial number on the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner's SN information can be found in the following locations:
1. The label on the packaging box of both the indoor and outdoor units;
2. The label on the right-side panel of the indoor unit;
3. Inside the accessory bag of the indoor unit (SN sticker);
4. The label inside the large handle of the outdoor unit;
 
56. Q: What are the key features of a split Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The key features of a split air conditioner are as follows:
1. Composition: Consists of an indoor unit and an outdoor unit, which are installed separately and connected via pipes and electrical wiring;
2. Types: Wall-mounted, cabinet-type, ceiling-mounted, embedded, and floor-standing;
3. Advantages:
(1). Aesthetic design, various styles, space-saving, low noise, and flexible usage;
(2). The indoor unit can be installed flexibly, and outdoor unit’s size is not limited;
(3). Produce very little noise, around 40~50dB, whereas window air conditioners generate about 60dB;
(4). Does not obstruct indoor lighting and avoids window vibrations caused by traditional window air conditioners;
(5). Easy installation and maintenance;
(6). Cost-effective, practical, and durable.
 
57. Q: What are the safety instructions for the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The safety instructions are as follows:
1. This product can only use the power supply indicated on the nameplate. Please use the specified power cord and do not change it by yourself;
2. Do not connect the grounding wire of the power supply to a gas tank or water pipe. Insufficient grounding will result in electric shock;
3. Make sure that the wiring harness, drainage hose, and compressor pipe are connected correctly. Improper connection will cause the air conditioner not to function normally or reduce performance after some time or even have problems of water leakage, electrical leakage, fluorine leakage, electric shock, or fire accidents;
4. Use the button to turn the product on or off instead of plugging or unplugging the power plug during daily use. Please turn off the product and unplug the power plug when not in use for a long time;
5. When the ambient humidity is high, please increase the fan speed or adjust the air guide blade angle to the maximum using the wind direction button to prevent water droplets from falling;
6. Do not install the air conditioner in places where flammable or explosive gases can leak, where the environment is humid, or where electromagnetic interference is significant. The indoor unit of this air conditioner is not waterproof, so do not use it in humid environments such as laundry rooms or bathrooms;
7. When indoor ventilation equipment is used together with indoor heating equipment or gas stoves, it should be ensured to avoid hypoxic accidents caused by insufficient ventilation;
8. Do not blow the air from the air conditioner directly to animals or plants, otherwise, it will cause adverse effects;
9. When cleaning the air conditioner, be sure to turn it off and cut off the power supply, and make sure that the air conditioner has completely stopped before operating;
10. Do not poke your fingers or sticks into the exhaust inlet or exhaust outlet of the air conditioner. Otherwise, it will cause damage to the air conditioner or even personal injury;
11. Do not place any objects on the outdoor unit and check its mounting bracket frequently. If there is any damage, repair it in time. Otherwise, the outdoor unit will fall and cause injury;
12. If any abnormality in the air conditioner (such as a burnt smell) is found, turn the air conditioner off, cut off the power supply immediately, and contact the after-sales service center;
13. For safety's sake, cut off the power supply before touching the air conditioner;
14. Do not install the air conditioner in special places such as ships or vehicles.

58. Q: What to do if accidentally touch the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter and feel an electric tingling sensation?
A: For your safety, do not touch the indoor or outdoor units while the air conditioner is operating. If you experience a tingling sensation upon accidental contact with the outdoor unit, please contact a professional engineer to properly ground the air conditioner to prevent electric shocks or other hazards.
 
59. Q: What is the dehumidification capacity of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The dehumidification capacity has not been tested currently.

60. Q: How to find the manufacturing date of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The production year and month can be found on the package labels of both the indoor and outdoor units.

61. Q: What do the letters and numbers in the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter model represent?
A: The model of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is ASC-09WO/N1C5-MY.
The meanings of the letters and numbers are as follows:
1. Category code: A (Air Conditioner);
2. Type code: S (Split);
3. Cooling/Heating code: C (Cooling-only);
4. Capacity code: 09 (9000 BTU);
5. Indoor unit code: W (Wall-mounted);
6. Outdoor unit code: O (Outdoor unit);
7. Series/Product iteration code: N1 (Super energy-saving series);
8. Refrigerant code: C (R32 refrigerant);
9. Energy efficiency level: 5 (5-star);
10. Energy efficiency standard code: MY (Malaysia).
 
Function Usage
1. Q: How to connect the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter to the Xiaomi Home App?
A: Install the Xiaomi Home App and log in to your account.
Please follow the steps below to configure it:
1. First, connect your phone to your home Wi-Fi, then open the Xiaomi Home App, tap the [+] in the upper right corner to enter the [Add device] interface, and tap the detected air conditioner product name to enter the Wi-Fi configuration interface;

2. Follow the on-screen instructions step by step until you see the message "Device added successfully".
Note:
1. For Android phones, the Xiaomi Home App allows adding devices via nearby devices or add manually. For iOS phones, after installing the Xiaomi Home App, you can manually select a device to add or tap the Bluetooth icon in the upper right corner to scan and add new devices;
2. To update the indoor and outdoor units, you can tap the three-dot icon in the upper right corner of the device interface, then tap [Firmware update].
2. Q: How to reset the Wi-Fi of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Simultaneously press and hold the light and sleep buttons for 5 seconds to reset the Wi-Fi.
 
3. Q: How to adjust the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's temperature?
A: In cooling mode, the temperature adjustment range is 16°C to 31°C. Press the remote control's [+] and [-] buttons once to adjust the temperature in 0.5°C.
 
4. Q: How to use the remote control to control the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The remote control uses infrared technology. Point the remote at the air conditioner’s front panel (display screen) to control it.
Note:
1. The infrared receiver is located behind the display screen, which has some light-transmitting properties;
2. The remote control's effective range is within 8 meters and approximately 45° left and right.
 
5. Q: How to install the battery of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter’s remote control?
A: The installation method of the battery is as follows:
1. Press the groove on the battery cover and slide it downward to open (see left image below);
2. Insert two AAA batteries as shown in the right image, ensuring correct polarity, then close the battery cover.

Note:
Incorrect battery installation can cause the remote control to malfunction. Avoid forcibly pulling or prying the battery cover.
 
6. Q: How to upgrade the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's firmware?
A: If a new version is available, you will see an update prompt in the upper right corner of the air conditioner's device interface in the Xiaomi Home App. It is recommended to keep the firmware up to date for optimal performance.
7. Q: How to install the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Air conditioner installation requires professional skills. It is recommended to schedule an installation service rather than attempting self-installation.
 
8. Q: How to set the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter’s timer?
A: You can set the timer by using the remote control. When the air conditioner is turned on, the remote control can be used to set a turn-off timer. When the air conditioner is turned off, the remote control can be used to set a turn-on timer. Press the timer button to enter the timer mode, and then press [+] or [-] to adjust the time. The timer is set successfully if there is no operation for two seconds.
Note:
The turn-on timer defaults to the mode, temperature, fan speed, and swing modes used before the last shutdown. If you would like to use the functions during the next turn-on, you can set the mode, temperature, fan speed, and swing modes as needed when the air conditioner is running, and then turn off the air conditioner and set the turn-on timer.
You can also use the Xiaomi Home App to set the timer in 3 ways.
For your reference, those 3 ways are listed below:
1. Using the [Timer] function on the air conditioner's device homepage and select [Power on timer]/[Power off timer] to set the air conditioner’s turn-on/turn-off time;


Note:
When the air conditioner is off, you can select [Power on timer] to schedule a time for it to power on. When the air conditioner is on, you can select [Power off timer] to schedule a time for it to power off.
2. Use the [Timer] function on the air conditioner's device homepage and select [Schedule] to set a specific period for the air conditioner to turn on and off;
Note:
This method includes both [Power on time] and [Power off time]. The air conditioner will automatically turn on at the beginning of the specified period and turn off at the end.
3. Using smart scenes, you can set up scheduled on/off times by adding a smart scene in the [Automation] section of the Xiaomi Home App.
9. Q: How to enable multiple people to control the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: After connecting and binding the air conditioner to the Xiaomi Home App, tap [Share device] in the settings, and you can share it with family members for multi-user control.
10. Q: How to link the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter with other devices?
A: The air conditioner supports smart scene settings and can be linked with other devices.
Path: Open the Xiaomi Home App >> tap the three-dot icon in the upper right corner of the device interface >> [Automation] >> tap [+] in the upper right corner.
11. Q: How to adjust the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's operating mode?
A: Press the mode button to switch modes in sequence: cooling mode, dry mode, and fan mode.
 
12. Q: How to adjust the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's fan speed?
A: Press the fan speed button to adjust the speed: automatic, quiet (level 1), low (level 2), low-medium (level 3), medium (level 4), medium-high (level 5), high (level 6), super-high (level 7).
Note:
The fan speed is not adjustable in dry mode.
Press the Left/Right Swing button to turn the horizontal oscillation on or off.
Press the Up/Down Swing button to turn the vertical swing function on or off.
 
13. Q: How to enable the child lock feature of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Simultaneously press and hold the "+" and "-" buttons on the remote control for more than three seconds to enable or disable the child lock function of the remote control.
 
14. Q: How to use the Auto clean function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Follow these steps to activate the Auto clean function:
When the air conditioner is turned off, simultaneously press and hold the LOW WATT button and the timer button for more than three seconds to enable the Auto clean function. The remote control will show automatic cleaning, and the display of the air conditioner is blinking. Then the air conditioner will run for about 40 minutes, and automatically exit the Auto clean function and shut down.
Note:
1. The duration displayed on the remote control and the air conditioner display can vary;
2. There can be noise, breeze, and cold air during the Auto clean operation, which is normal;
3. When the ambient temperature is too high or too low, the air conditioner will automatically activate the protection function, which will cause the Auto clean function to be exited or fail to start;
4. The Auto clean function can only clean the heat exchanger.
 
15. Q: How to adjust the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's airflow direction?
A: Press the Up/Down Swing and Left/Right Swing buttons on the remote control to adjust airflow direction. 
Press the Left/Right Swing button to turn the horizontal oscillation on or off.
Press the Up/Down Swing button to turn the vertical swing function on or off.
 
16. Q: How to adjust the screen brightness of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter supports turning on or off the display light by pressing the light button.
 
17. Q: How to turn the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter on and off?
A: Press the on/off button to turn the air conditioner on or off.
 
18. Q: What is the best location for installing the air conditioner and what are the precautions?
A: Air conditioner installation requires professional skills. It is recommended to schedule an installation service rather than attempting self-installation.
Outdoor unit location selection:
1. Avoid exposure to direct sunlight or strong wind;
2. Keep away from heat sources, steam sources, and places with flammable gas leakage and smoke;
3. Select a place that is not exposed to rain and has good ventilation;
4. Choose a place where the air outlet and operating noise of the air conditioner will not disturb other people or animals or plants;
5. Make sure the installation space is not smaller than the requirements in the User Manual;
6. Make sure the air outlet is open and unobstructed to avoid affecting the performance;
7. The outdoor unit shall not occupy public sidewalks. If the outdoor unit is installed along buildings on both sides of the road, the distance from the bottom of the outdoor unit mounting bracket to the ground shall be greater than 25cm. On the condition that the outdoor unit mounting bracket does not affect the public passages, the distance from the bottom of the outdoor unit to the ground shall be greater than 25cm;
8. To ensure the room temperature regulation effect, it is recommended to remove the obstructions like the shutter in front of the outdoor unit when installing. If such obstructions cannot be removed, the air outlet of the outdoor unit shall be placed as close to the shutter as possible;
9. The installation location shall be firm and reliable, otherwise it will increase operating noise and vibration and bring danger.
Indoor unit location selection:
1. Avoid direct sunlight;
2. There are no obstacles at the air inlet and outlet to maintain good air circulation;
3. Its convenient for the drainage hose to drain water;
4. The distance to radio devices (such as TV or radio) is greater than 1m;
5. The air conditioner shall be installed on a wall that can bear the weight of the indoor unit and does not increase the operating noise and vibration;
6. The minimum clearance between the auxiliary electric heating air conditioners and the surfaces of combustible materials is 1.5m;
7. The auxiliary electric heating components are assembled and fixed in the indoor unit evaporator. They are ceramic PTC electric heating elements. The input power can be found in the "PTC" on the nameplate (Input Power for the Auxiliary Electric Heater).
Note:
1. Models without "Input Power for the Auxiliary Electric Heater (PTC)" on the nameplate do not have this component;
2. For the best performance, please make sure to install the indoor and outdoor units according to the spacing shown in the User Manual.
 
19. Q: How to enable the sleep mode of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: In cooling mode, press the sleep button to turn the sleep function on or off. In sleep mode, the air conditioner will automatically adjust the temperature.
Note:
The sleep mode can be turned on only in cooling mode.
 
20. Q: How to activate the dry mode of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Press the mode button on the remote control until the dry mode icon appears.
You can also go to the Xiaomi Home App >> [Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter] >> tap the mode icon >> select [Dry].
21. Q: How to restore the factory settings of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: To restore factory settings, please refer to the following information:
Within five minutes of the air conditioner connecting to power (make sure it is turned off), quickly press the light button on the remote control six times in five seconds, and then the air conditioner makes a buzzer sound for two seconds. Disconnect the power and reconnect the power, and the factory settings will be restored.
Note:
1. When restored to the factory settings, the air conditioner will delete all data including but not limited to the set temperature, fan speed, timing information, function switches, and accumulated electricity consumption;
2. It is not recommended to restore the factory settings unless necessary, so as not to affect the experience of some functions. For example, the accumulated electricity consumption value will be significantly different from the actual electricity consumption value.
 
22. Q: What should be aware of when using the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Please pay attention to the following points when using the air conditioner:
1. Check the operating conditions: The cooling mode operates within a temperature range of 18°C~43°C. If the ambient temperature is too high or too low, the unit will shut down for protection;
2. Safety precautions: For safety-related usage guidelines, please refer to the user manual.
Safety Instructions:
1. This product can only use the power supply indicated on the nameplate. Please use the specified power cord and do not change it by yourself;
2. Do not connect the grounding wire of the power supply to a gas tank or water pipe. Insufficient grounding will result in electric shock;
3. Make sure that the wiring harness, drainage hose and compressor pipe are connected correctly. Improper connection will cause the air conditioner not to function normally or reduce performance after  or even have problems of water leakage, electrical leakage, fluorine leakage, electric shock, or fire accidents;
4. Use the button to turn the product on or off instead of plugging or unplugging the power plug during daily use. Please turn off the product and unplug the power plug when not in use for a long time;
5. When the ambient humidity is high, please increase the fan speed or adjust the air guide blade angle to the maximum using the wind direction button to prevent water droplets from falling;
6. Do not install the air conditioner in places where flammable or explosive gases can leak, where the environment is humid, or where electromagnetic interference is significant. The indoor unit of this air conditioner is not waterproof, so do not use it in humid environments such as laundry rooms or bathrooms;
7. When indoor ventilation equipment is used together with indoor heating equipment or gas stoves, it should be ensured to avoid hypoxic accidents caused by insufficient ventilation;
8. Do not blow the air from the air conditioner directly to animals or plants, otherwise, it will cause adverse effects;
9. When cleaning the air conditioner, be sure to turn it off and cut off the power supply, and make sure that the air conditioner has completely stopped before operating;
10. Do not poke your fingers or sticks into the exhaust inlet or exhaust outlet of the air conditioner. Otherwise, it will cause damage to the air conditioner or even personal injury;
11. Do not place any objects on the outdoor unit and check its mounting bracket frequently. If there is any damage, repair it in time. Otherwise, the outdoor unit will fall and cause injury;
12. If any abnormality in the air conditioner (such as a burnt smell) is found, turn the air conditioner off, cut off the power supply immediately, and contact the after-sales service center;
13. For safety's sake, cut off the power supply before touching the air conditioner;
14. Do not install the air conditioner in special places such as ships or vehicles.
 
23. Q: How to use the drying function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: It supports the drying function. You can set it in the Xiaomi Home App >> [Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter] >> tap the three-dot icon at the right top of the screen >> enable [Drying function].
24. Q: How to use the AI function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Follow these steps to use the air conditioner's AI function:
1. Voice control: Google Home and Amazon Alexa.
(1). Download and log in to the Google Home or Amazon Alexa;
(2). Connect (bind) the air conditioner device in the voice assistant. If you have a Google or Alexa smart speaker at home, you can also bind the air conditioner device to it;
(3). Once connected to the internet, you can use voice control.
2. AI energy saver: This function uses the cloud’s deep learning algorithms to achieve long-lasting energy savings and improve environmental adaptability.
Once the air conditioner is connected to the network, it automatically detects the environment and location, and intelligently selects the mode based on the scenario. For example, if the ambient temperature is 40°C and the room size is 16m², the air conditioner will quickly cool the room. When in cooling mode, enable the AI energy saver mode in the Xiaomi Home App to maintain accurate and stable temperature control for long-term energy savings.
Note:
The expected update time for the Google Home and Amazon Alexa functions is the end of February. 
25. Q: How to check the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter filter's lifespan?
A: This air conditioner does not have an integrated filter. The filter mesh is located at the top of the unit and will not get damaged in common situations. Just clean it as prompted.
 
26. Q: How to check the sleep curve of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: To check the sleep curve, please refer to the following steps:
1. Open the Xiaomi Home App and select the device you want to check the sleep curve;
2. Tap the three-dot icon in the upper right corner to enter the settings, select [Additional features], then choose [Customize sleep curve] to view it.
27. Q: How to change the device name of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: To change the device name, please refer to the following steps:
1. Open the Xiaomi Home App and select the device you want to rename;
2. Tap the three-dot icon in the upper right corner to enter the settings, and select [Device name], then change the name;
3. Confirm that the new name is saved successfully.
28. Q: How to manage the location of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: To manage the air conditioner's location, please refer to the following steps:
1. Open the Xiaomi Home App and select the device you want to manage;
2. Tap the three-dot icon in the upper right corner to enter the settings, and select [Manage locations] to modify it.
29. Q: How to add the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter as a shortcut on the home screen?
A: Please follow these steps to add the air conditioner as a home screen shortcut:
1. Open the Xiaomi Home App and select the device you want to add as a shortcut;
2. Tap the three-dot icon in the upper right corner to enter the settings;
3. In the settings, find the [Additional settings] option and tap to enter;
4. Choose [Add to Home screen] to proceed.
30. Q: What temperature of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter should be set for maximum energy efficiency?
A: The energy efficiency of the air conditioner depends on factors like room size and insulation. In general, a cooling setting of 26°C provides the best balance between comfort and energy savings.
 
31. Q: How to bind the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter to a smart band? How to control the air conditioner with the band?
A: The air conditioner currently does not support binding with a smart band.
 
32. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter have a memory function? (Will it resume the previous settings after a power outage?)
A: The air conditioner has a power-off memory function, however, it only remembers the settings from the last power-off. It will not automatically turn on after a power restoration. You will need to manually turn it on.
 
33. Q: How to use the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's Auto clean function?
A: With the air conditioner turned off, press the LOW WATT and timer buttons on the remote control simultaneously. After 3 seconds, the Auto clean mode will activate. The Auto clean process lasts approximately 40 minutes.
 
34. Q: How to use the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's LOW WATT function?
A: The LOW WATT mode supports 6 levels of adjustment, which are L1 to L6. In cooling mode, press the LOW WATT button to turn on, off or cycle through the LOW WATT levels: level 1, level 2, level 3, level 4, level 5, level 6, and off.
 
35. Q: How to turn the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter on and off?
A: To turn the air conditioner on or off, please refer to the following steps:
1. Point the remote control at the air conditioner display and press the on/off button to turn it on or off;
2. After connecting the air conditioner to the network, you can also use the Xiaomi Home App to turn it on or off by pressing the power button;
3. To set a timer for on/off, use the timer button on the remote control or through the Xiaomi Home App.
36. Q: What modes does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter have?
A: The air conditioner modes are cooling mode, dry mode, and fan mode.
 
37. Q: Does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter filter need to be replaced regularly?
A: The filter does not need to be replaced unless it is damaged or deformed.
 
38. Q: How to clean the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter evaporator?
A: Turn off the air conditioner and remove the indoor unit’s front panel. First, spray cleaning solution on the evaporator fins and wait for 5-10 minutes. Then, rinse it with clean water. Be careful not to let water get into the electrical control box or display board to avoid electrical faults. If using the Auto clean mode, please follow the instructions for that mode in the User Manual. Since cleaning the evaporator requires disassembling the indoor unit panel, it is not recommended to do it yourself.
 
39. Q: Can the direction of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter’s indoor unit piping be changed?
A: The direction of the indoor unit piping can be adjusted: left exit, back exit, or right exit.
 
40. Q: Why is the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter’s filter on top? What are the advantages?
A: The one-piece filter design simplifies product development and meets the need for top airflow to block dust.
For your reference, here are the detailed advantages:
1. The filter is easy to remove, requiring only one operation without removing other parts;
2. The one-piece filter does not need to be disassembled for cleaning, making maintenance simpler.
 
41. Q: How to use the Turbo mode of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: After powering on the air conditioner, press the turbo button on the remote control to activate or deactivate the turbo mode. If the air conditioner is connected to the network, you can also turn Turbo mode on or off via the Xiaomi Home App.
42. Q: How does the Turbo mode of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter work?
A: Turbo mode maximizes the air conditioner's cooling capacity for rapid cooling. When activated, the system adjusts the compressor and fan frequencies and speeds to their maximum for quick cooling.
 
43. Q: How to use the gentle airflow feeling function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: Press the Air flow button to cycle through gentle airflow, upward airflow, downward airflow, circulating air, and off. When it stays on "gentle airflow", it indicates the gentle airflow feeling function is active.
 
44. Q: How does the gentle airflow feeling function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter work?
A: The air conditioner has a gentle air guide blade. When the gentle airflow feeling function is on, the left and right oscillating motors move the deflector to a perpendicular angle to the airflow. The airflow is dispersed through holes in the deflector, creating a soft breeze effect.
 
45. Q: How often does the auto clean function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter run?
A: It is recommended that use the auto clean function once a month. If the use environment is poor, such as dusty, it is recommended to shorten the cycle.

46. Q: After the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is connected to Wi-Fi, will it automatically connect when it is powered on again after a power outage?
A: After the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is connected to Wi-Fi, the device will automatically connect to APP when it is powered on again after a power outage. However, if the power outage is too long and you cannot connect, please reset the Wi-Fi and reconnect.
 
47. Q: What voice command does the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support?
A: The Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter supports the voice command function of Google Assistant. Currently, the following voice commands are supported to control the air conditioner:
1. Turn on/off: "Hey Google, turn on/off <device name>";
2. Adjust the air conditioner speed: "Hey Google, set <device name> speed to <speed name>";
3. Adjust the air conditioner temperature: "Hey Google, set <device name> to xx degrees";
4. Adjust the air conditioner mode: "Hey Google, set <device name> to <mode name>".
Friendly tips:
You can change the device name by going to Mi Home APP >> select the air conditioner >> tap the three-dot icon at the upper right corner >> tap [Device name] >> input the desired name and tapping [OK].

48.Q: What languages does the Google Assistant voice command function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter support?
A: The Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter can be easily controlled with voice commands via Google Assistant. Currently, 16 languages are supported:
Danish, Dutch, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Norwegian, Portuguese, Spanish, Swedish, Thai, and Chinese.
For more languages, please await further updates for Google Assistant.
 
49. Q: What is the OTA update content in September 25, 2025 of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The OTA upgrade will be rolled out progressively starting from September 25, 2025.
Here are the update contents of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter:
1. Multiple cooling modes;
2. Adjustable noise levels;
3. Smart anti-condensation;
4. Cloud-based filter cleaning reminder.

50. Q: What are the cooling modes of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter after OTA update?
A: After the OTA update, there are multiple cooling modes added to the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter. The cooling modes include Intense cooling, Medium cooling, Comfort, Gentle cooling, and Mild cooling.
To improve cooling, please adjust the cooling mode to a higher cooling level above.
To reduce cooling, please adjust the cooling mode to a lower cooling level below.
Note:
Improving cooling may lead to increased noise, please adjust as needed.


51. Q: What is filter cleaning reminder on the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The Cloud-based filter cleaning reminder is calculated based on the difference between the air outlet temperature and the air inlet temperature, pipe temperature and other parameters detected by the air conditioner, not based on the number of days or hours of operation.
 
Troubleshooting
1. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter cannot connect to the Xiaomi Home App?
A: If the air conditioner cannot connect to the Xiaomi Home App, please follow these steps:
1. Check whether the air conditioner is turned on and in pairing mode. Unplug the power for 10 seconds and then plug it back in, or reset the air conditioner's Wi-Fi and try connecting again;
2. Ensure that the connected Wi-Fi is a 2.4GHz network, as the air conditioner only supports 2.4GHz Wi-Fi and does not support 5GHz Wi-Fi;
3. Make sure the router is not too far from the air conditioner and that the router is functioning properly;
4. Confirm that the router's SSID and password do not contain Chinese characters or special symbols, and that the SSID and password are entered correctly;
5. Try manually setting up a mobile hotspot to see if the issue is related to the router's network;
6. Update the Xiaomi Home App to the latest version or uninstall and reinstall it. Make sure to follow the step-by-step instructions in the APP when connecting the air conditioner.
If the above steps do not resolve the issue, please request after-sales service for further inspection.
2. Q: What to do if the firmware upgrade of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter fails in the Xiaomi Home App?
A: If the air conditioner firmware upgrade fails, please follow these steps:
1. Update the Xiaomi Home App to the latest version and try again;
2. Check if the Wi-Fi network is working properly and has internet access;
3. Try connecting to a different network and see if the upgrade can proceed successfully;
4. During the firmware upgrade process, do not exit the upgrade interface or close the APP to ensure the update completes properly.
If the above steps do not resolve the issue, please contact the after-sales service center for assistance.
3. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter automatically stops during cooling?
A: Please refer to the following troubleshooting steps:
1. Check if the room temperature has reached the set temperature. When this happens, the air conditioner will lower its frequency and fan speed accordingly;
2. Please enable the LOW WATT mode and check if the device can operate normally;
3. Check if an error code is displayed. Some of the error codes are the protection codes. If so, wait for a while, and the unit should resume operation automatically.
If the above steps do not resolve the issue, please contact the after-sales service center for inspection.
 
4. Q: What are the different statuses of the Wi-Fi indicator on the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The statuses of the Wi-Fi indicator on the indoor unit’s display are as follows:
Wi-Fi Status
Indicator Status
Wi-Fi not connected (within 30 minutes)
Flashing
Wi-Fi not connected (over 30 minutes)
Off (when powered on)
Wi-Fi connected
Always on (when powered on)
Standby mode
Always on (when powered off)
 
5. Q: What to do if the Wi-Fi indicator of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter behaves abnormally?
A: Please confirm that the air conditioner is connected to the network properly. If it cannot connect, please request the after-sales service center for inspection.
 
6. Q: What to do if the temperature of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter cannot be adjusted?
A: Please refer to the following steps if the air conditioner fails to adjust the temperature:
1. Using the remote control:
(1). Check if the remote control batteries are functional. Replace them if necessary;
(2). Ensure the remote control is displaying correctly and that other buttons are working;
(3). Please check if the air conditioner is in LOW WATT mode or sleep mode, as these modes will limit the temperature adjustment function;
(4). Confirm that the air conditioner receives the remote control signals (listen for a beep sound);
(5). Please turn off the air conditioner for 3-5 minutes and then restart it to see if the issue is resolved;
(6). If the issue remains unresolved, please contact the after-sales service center.
2. Using the Xiaomi Home App:
(1). Disconnect the air conditioner from the Xiaomi Home App (remove the device from the APP and reset the Wi-Fi), then try using only the remote control;
(2). Check for possible interference from other household devices operating on remote control;
(3). If the issue persists, it could be a hardware problem, requiring after-sales service;
(4). If the issue disappears, it is due to smart settings in the Xiaomi Home App (such as sleep curve or LOW WATT mode). Please reset the Wi-Fi and clear historical data in the APP.
If neither the remote control nor the APP can control the air conditioner, please request after-sales service for inspection.
7. Q: What to do if the airflow temperature of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is not suitable?
A: Please try the following troubleshooting steps:
1. Ensure the mode is set correctly for the current season (cooling or fan mode);
2. Adjust the temperature setting to increase or decrease comfort;
3. Modify the fan speed to improve airflow comfort;
4. Clean the air filter and check if the unit needs maintenance.
 
8. Q: What to do if the airflow direction of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter cannot be adjusted?
A: Please refer to the following troubleshooting steps:
1. Ensure the swing function is activated and set correctly;
2. Check if the air guide blade is stuck. If so, identify and remove any obstruction;
3. If the issue persists, please contact the after-sales service center.
 
9. Q: What to do if the fan speed of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter cannot be adjusted?
A: Please refer to the following troubleshooting steps:
1. Using the remote control:
(1). Check if the remote control batteries are functional. Replace them if necessary;
(2). Ensure the remote control is displaying correctly and that other buttons are working;
(3). Please confirm that you are checking the fan speed level on the LCD display area at the top of the remote control, and use the fan speed button to adjust it;
(4). Confirm that the air conditioner receives the remote control signals (listen for a beep sound);
(5). Please turn off the air conditioner for 3-5 minutes and then restart it to see if the issue is resolved;
(6). If the issue remains unresolved, please contact the after-sales service center.
2. Using the Xiaomi Home App:
(1). Disconnect the air conditioner from the Xiaomi Home App (remove the device from the APP and reset the Wi-Fi), then try using only the remote control;
(2). Check for possible interference from other household devices operating on remote control;
(3). If the issue persists, it could be a hardware problem, requiring after-sales service;
(4). If the issue disappears, it is due to smart settings in the Xiaomi Home App. Please reset the Wi-Fi and clear historical data in the APP.
If neither the remote control nor the APP can control the air conditioner, please request after-sales service for inspection.
10. Q: What to do if the timer function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter does not work?
A: Please refer to the following troubleshooting steps:
1. Ensure the air conditioner is properly connected to the internet, as the timer function requires an active network;
2. If the network connection is normal but issue persists, restart the device and check if the issue is resolved;
3. If using the Xiaomi Home App for timer settings, ensure the device memory has not reset due to power loss. If configured through an automation scene of the APP, it will not function when offline, as the APP requires a network connection to send commands to the device.
11. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter’s cooling performance is poor?
A: Please refer to the following troubleshooting steps:
1. Adjust the settings by turning off sleep mode and increasing the fan speed to increase the cooling effect;
2. Please check the environment, including whether there are heat sources in the room and if the doors and windows are properly closed;
3. Check if the air inlet and outlet are blocked to ensure the air circulation;
4. Please check if the indoor unit's filter is dirty or clogged, and clean the filter if necessary;
5. If the outdoor temperature is too high (exceeds 43°C), cooling performance will decrease, which is normal;
6. If the issue persists, please contact the after-sales service center.
 
12. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is not cooling?  
A: If the air conditioner is not cooling, please follow these steps:  
1. Check the air conditioner settings, ensure it is in cooling mode, and set the fan speed to the maximum;  
2. After turning it on for 5 minutes, place your hand near the air outlet to check if cold air is coming out. If cold air is present, the air conditioner is functioning normally, and it will take some time to lower the room temperature.
If the issue persists after these checks, please request after-sales service for inspection.
 
13. Q: What to do if the airflow volume of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is low?
A: The troubleshooting steps for low air output from the air conditioner are as follows:
1. Please check the fan speed settings. Try setting the air conditioner's fan speed to the maximum and see if it works;
2. Please check if the indoor unit's filter is dirty or clogged. Excessive dirt on the filter can lead to insufficient airflow. Clean the indoor unit's filter if necessary;
3. If the above steps do not resolve the issue, it is recommended to request the after-sales service for inspection.
 
14. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter cannot be turned on?
A: Please refer to the following troubleshooting steps:
1. Please power off the air conditioner and reconnect to verify if there is electricity. (When the air conditioner is powered on, a "beep" sound will occur. If you hear the sound, it indicates the air conditioner is receiving power properly.);
2. Check if the remote control battery is depleted. Try replacing the batteries and see if it works;
3. Use your phone's camera function to point at the remote control and check if a signal is being emitted. If you see a red flashing dot, it means the remote control is working properly;
4. If the air conditioner is connected to the Xiaomi Home App, try turning it on through the APP;
5. If the issue persists, please contact the after-sales service center.
15. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter trips the circuit breaker?
A: If the air conditioner trips the circuit breaker during use, try using the LOW WATT function to see if it can operate normally. If it works properly in this mode, the issue is due to power limitations. If the problem persists, please request after-sales service for inspection.
 
16. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter makes noise during operation?
A: If the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter makes noise during operation, please follow these steps:
1. Identify the type of noise, for example, airflow sound, relay clicking sound, thermal expansion or contraction of plastic parts, compressor operation noise, or water flow sound. These are considered normal;
2. If there are external speakers nearby, they can produce noise due to electromagnetic interference after the air conditioner is turned on. Try adjusting the position of the external speakers;
3. If you hear other unusual sounds or the noise level is excessively loud, please contact after-sales service for inspection.
 
17. Q: How to prevent icing of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner only has a cooling mode, and under normal operation, neither the indoor nor outdoor unit should develop ice. If you notice ice formation on the indoor unit, please request after-sales service for inspection.
 
18. Q: What to do if the indoor unit of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter leaks water?
A: To handle indoor unit water leakage, please refer to the following steps:
1. Please check if the indoor unit's filter is too dirty. A dirty filter can cause poor airflow, leading to moisture buildup and water leakage. Clean the indoor unit's filter if necessary;
2. If you notice occasional water droplets forming at the air outlet of the indoor unit, it is due to high humidity in the air, causing condensation when it meets the cold surface. This is a normal phenomenon. You can try closing doors and windows, increasing the temperature setting, raising the fan speed, or enabling the swing mode to reduce condensation;
3. If there is significant water leakage from the indoor unit, immediately turn off the air conditioner, disconnect the power, wipe off the water, and request after-sales service for inspection. Do not use the air conditioner until it has been checked by a service technician.
 
19. Q: How to deal with water leakage from the outdoor unit of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter?
A: The air conditioner only supports cooling mode, and the outdoor unit does not produce condensate.
Please check as follows:
1. Water leakage from the outdoor unit can be due to the cooling pipes being in a low-temperature state. When outdoor humidity is high, condensation will form on the low-temperature pipes and drip onto the chassis, which then drains through the drainage hole. This is a normal phenomenon and does not need repair;
Note:
Residual rainwater can also drain from the outlet after rainfall.
2. If you think this situation needs to be addressed, you can contact the after-sales service center to install a drainage nozzle or drainage hose on the outdoor unit chassis.
 
20. Q: What to do if the remote control of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is not working or unresponsive?
A: Please troubleshoot using the following steps:
1. Check if the remote control battery has sufficient power;
2. If the issue persists, try turning off the power and restarting the air conditioner;
3. Check if there are interference sources nearby, such as routers or high-power electrical devices;
4. Use your phone's camera function to point at the remote control and check if a signal is being emitted. If you see a red flashing dot, it means the remote control is working properly;
5. If none of the above resolves the issue, please contact the after-sales service center for further inspection.
 
21. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter emits a bad odor during operation?
A: If the air conditioner has an unusual odor, please check if the filter is too dirty. Clean the filter and observe whether the odor persists. If the issue is not resolved, please request after-sales service for inspection.
 
22. Q: What to do if the outdoor unit of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter emits smoke while running?
A: If you notice abnormal smoke, immediately turn off the power of the device and contact the after-sales service center if the issue persists.
 
23. Q: What to do if the Auto clean function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter fails or is ineffective?
A: Please handle air conditioner Auto clean failure/poor effectiveness as follows:
1. Once the Auto clean mode is activated, the air conditioner will complete the entire cleaning process. The Auto clean cycle usually takes 30~40 minutes, though the duration will vary slightly depending on the operating environment. Please ensure that the Auto clean program completes automatically;
2. During Auto clean, temperature protection will be triggered if the temperature is too high or too low, causing the Auto clean mode to malfunction or exit midway. It is recommended to activate Auto clean in a suitable temperature environment to avoid extreme temperatures;
3. During the Auto clean process, you can notice noise, reduced indoor unit airflow, or cold/hot air being blown out. These are normal signs indicating that the cleaning function is operating correctly. Do not interrupt the Auto clean function. To minimize discomfort, it is recommended to keep the room ventilated.
Note:
1. Auto clean cannot begin under the following temperature conditions:
(1). Indoor temperature above 30°C and outdoor temperature above 40°C;
(2). Indoor temperature above 38°C;
(3). Outdoor temperature above 40°C;
(4). Indoor temperature below 16°C;
(5). Outdoor temperature below 0°C;
2. Pressing the on/off button during the Auto clean process will not immediately exit the cleaning mode. It depends on the current stage of operation. Choose a reasonable mode to complete or end the function to prevent damage to the air conditioner.
 
24. Q: How to clean the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter’s filter?
A: Please refer to the following steps:
1. Removing the filter: As shown in the figure, open the clips at both ends and the middle of the filter, and pull upward to remove the filter;
2. Cleaning the filter: After the filter is removed, use a vacuum cleaner to remove the dust or rinse the filter with clean water;
3. Reinstalling the filter: Align the clips with the snapping positions and reinstall the filter correctly.

 
25. Q: What to do if the Auto clean function of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter doesn’t work?
A: Please check the following steps:
1. Ensure you press and hold the LOW WATT button and the timer button on the remote control for at least 3 seconds;
2. Auto clean cannot begin under the following temperature conditions:
(1). Indoor temperature above 30°C and outdoor temperature above 40°C;
(2). Indoor temperature above 38°C;
(3). Outdoor temperature above 40°C;
(4). Indoor temperature below 16°C;
(5). Outdoor temperature below 0°C.
If the issue is not resolved, please request after-sales service for inspection.
 
26. Q: What to do if the indoor unit of the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter blows water or mist?
A: When the indoor unit of the air conditioner blows water or mist into the room, it is usually due to high humidity in the room. The cold air, which is lower in temperature, encounters warm, moist air along its path after being blown out by the indoor unit, leading to condensation. This is a normal occurrence and does not require additional action.
If the humidity in the room is too high, or if the evaporator or connecting pipes are too cold, condensation will form on the panel and pipes. This is also considered a normal situation.
 
27. Q: What to do if a new Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter has an odor after unboxing?
A: Please check the following steps:
1. Check if the unit was covered by other objects for a long time, causing dampness or mildew in the air outlet;
2. If the smell is from plastic components, this is normal for new appliances and should dissipate over time. Please rest assured.
 
28. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter smells like burning?
A: If you notice a distinct burning smell while using the air conditioner, it is recommended that you immediately turn off the power and stop using it. Contact professional after-sales service for inspection and repair.
 
29. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is not powered on?
A: Please confirm the following information:
1. Please check if the power cord is properly connected and if the plug is securely inserted;
2. Please confirm if the socket is powered. If using a power outlet, try plugging in another device to verify if there is electricity;
3. Please check if you hear a "beep" sound after powering on the air conditioner. If you hear this sound, it indicates that the air conditioner is receiving power properly.
If the issue persists, please request after-sales service for inspection.
 
30. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's air guide blade does not close properly?
A: If the air conditioner's air guide blade is not closing properly, please turn off the air conditioner and unplug it. Wait for two minutes, then plug the power back in and check if it returns to normal. If the issue persists, please request after-sales service for inspection.
 
31. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter remote control display is incomplete or does not display anything?
A: Please confirm the following information:
1. Check whether the remote control batteries are depleted and try replacing them;
2. Ensure the remote control is turned on by pressing the on/off button, then try operating it again;
3. If the problem persists, it is recommended to request an after-sales service for further inspection.
 
32. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter display does not light up or is incomplete?
A: Please confirm the following information:
1. Check whether the light function is turned on by pressing the light button;
2. Turn off the power for two minutes, then turn it back on to see if the display resumes normal operation;
3. If the issue persists, it is recommended to request an after-sales service for further inspection.
 
33. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter remote control screen does not light up?
A: The air conditioner's remote control display does not have a backlight. If the numbers and icons are displaying correctly, it is considered normal for the screen to remain dark.
 
34. Q: How to handle the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter error codes?
A: The error codes explanations and solutions are listed below:
Serial Number
Error Code Category
New Error Code
Error Definition
Error explanation
Solution
1
Sensor Fault Protection
F1.1
Indoor ambient temperature sensor failure
Indoor unit ambient temperature sensing pack failure
1. Find the corresponding sensor according to the displayed error code, re-plug the sensor, and confirm whether the sensor failure is caused by poor contact;
2. Use a multimeter to test the sensor resistance to detect whether there is a short circuit, open circuit, or whether the resistance value. Hold the temperature sensor with your hand and detect its resistance. If it gradually decreases, it is normal. If there is a fault, replace the corresponding sensor;
3. You can use the "debugging mode" to see whether the corresponding displayed temperature is normal for auxiliary judgment. If it displays "50" or "0" or "--" and flashes, it means that the sensor is abnormal.
2
F1.2
Outdoor ambient temperature sensor failure
Outdoor unit ambient temperature sensing pack failure
3
F2.1
Indoor coil temperature sensor failure
Indoor unit pipe temperature sensing pack failure
4
F2.2
Outdoor coil temperature sensor failure
Outdoor unit pipe temperature sensing pack failure
5
F2.3
Indoor pipe temperature sensing pack failure
Indoor unit pipe temperature sensing pack failure protection
6
F2.4
Outdoor pipe temperature sensing pack failure protection
Outdoor unit pipe temperature sensing pack failure protection
7
F3.1
Outdoor exhaust temperature sensor failure
Outdoor unit exhaust temperature sensing pack failure
8
F3.2
Exhaust temperature sensing pack failure protection
Outdoor unit exhaust temperature sensing pack failure protection
9
Electronic Control Hardware Error
E1
Outdoor EEPROM failure
Outdoor unit electronic control program failure
1. If you use an after-sales board, check whether the EEPROM parameters match;
2. Replace the outdoor unit electronic control board.
10
E3
Communication failure between the indoor unit board and the display board
Communication failure between the indoor unit board and the display board
1. Check the connection wires between the main board and the display board to ensure that the wire sequence and connection are reliable: replug and connect;
2. If the wires are normal, replace the indoor unit board or display board.
11
E6.1
Indoor and outdoor communication: Data cannot be received indoors
Communication failure between the indoor and outdoor units main boards
1. Eliminate communication failures caused by poor power supply and wiring;
2. Check unit connections;
3. Test and determine the voltage of the indoor unit;
4. Check the outdoor unit.
12
E6.2
Indoor and outdoor communication: Data cannot be received outdoors
Communication failure between the indoor and outdoor units main boards
13
E8.1
Communication failure between the outdoor unit compressor chip and the fan chip
Outdoor unit electronic control communication failure
Replace the outdoor unit electrical control panel.
14
E8.2
Communication failure between indoor unit board and fan chip
Indoor unit electronic control communication failure
Replace the indoor unit electrical control panel.
15
FF
The indoor unit cannot receive the Internet module (SOC, Wi-Fi) communication failure
Indoor unit display panel communication failure
Request and replace the display board.
16
Fan Error
E0
Indoor PG/DC fan failure
Indoor unit fan failure
1. Move the fan to confirm whether it is stuck. If the fan blade is stuck, remove it and reassemble it;
2. Check the circuit between the circuit board and the motor line. If the terminal is out of place, oxidized, or disconnected, reconnect it and ensure the connection is reliable;
3. Detect the resistance between the motor terminals. If it is abnormal, replace the motor;
Note: When replacing the motor, connect the new motor to the main board and test it. If it works normally, replace it. If it is abnormal, continue to check the main board.
4. If there is no problem with the above inspection, check the output voltage of the main board to confirm whether it is a main board problem. If there is a problem, replace it.
17
E2 (E2.1/E2.2/E2.3/E2.4/E2.5/E2.6/E2.7)
Outdoor DC fan failure
Outdoor unit fan failure
1. Move the fan to see if it is stuck. If so, reassemble or replace the deformed parts;
2. Check the circuit between the circuit board and the motor line. If the terminal is out of place, contact is poor, or circuit is disconnected, reconnect it reliably;
3. Detect the resistance between the motor terminals. If it is abnormal, replace the motor.
Note: Before replacing the motor, connect the new motor to the main board for testing. If the new motor runs normally, replace it. If it runs abnormally, check whether it is a main board problem.
18
Outdoor Unit Electronic Control Drive Protection
U0
U0.0: Inverter DC over-voltage fault
U0.1: Inverter DC low voltage fault
U0.2:Inverter DC voltage mutation fault
U0.3:AC input low voltage (effective value) detection fault
Outdoor unit electronic control voltage failure
1. First check whether the input voltage at both ends of the N and L lines on the white wiring terminal of the outdoor unit is within the normal allowable range (160V, 260V) and test it in the power-on state. If it exceeds this range, it is normal protection;
2. Check whether the grid voltage fluctuates greatly and has mutations, and restart the machine after a period of time;
3. If the voltage is normal, there is a problem with the voltage sampling circuit, and replace the outdoor electric control board.
Note:
Before replacing the outdoor main board, test whether the compressor is short-circuited to the copper pipe and whether the three-phase resistance is consistent.
19
U1.1
Inverter module fault/inverter module hardware over-current fault
Outdoor unit electric control module current fault
1. Check the compressor wiring, if the wiring is bad, rewire
2. Unplug the UVW line at the compressor end and re-power on. If the fault cannot be cleared, replace the outdoor unit electronic control;
3. If the impedance between the compressor phase line and the casing is too low, replace the compressor;
4. If the electronic control board is a common spare part, it could be that the electronic control and compressor parameters do not match, and the E-side program needs to be refreshed;
5. Replace the outdoor unit electronic control board;
6. Check whether the system condensing pressure is too high: abnormal fan (replace the motor), too much refrigerant (refill), capillary blockage (replace the capillary), dirty blockage inside the two devices (replace the two devices);
7. Replace the compressor.
20
U1.2
Outdoor current sensor failure
Outdoor unit electric control current fault
21
U1.3
Compressor phase current circuit detection fault
Outdoor unit compressor current fault
22
U2(U2.1/U2.2/U2.3)
Over-current protection
Outdoor unit electric control over-current protection
1. Check if the voltage is too low;
2. Check if the outdoor unit heat exchanger is dirty or blocked; the outdoor unit does not exchange heat well in the grille
3. Check if the indoor/outdoor unit air outlet is not smooth;
4. Check if the indoor unit filter is dirty or blocked;
5. Check if the indoor/outdoor motor speed drops;
6. Check if the indoor/outdoor fan blades are damaged;
7. Check if the refrigerant is abnormal: After eliminating the actual current over-current protection, if the actual current is lower than the rated current and the protection is still on, the current detection circuit can be faulty, causing the detected current to be greater than the actual current value. Replace the outdoor unit electric control board.
In addition, if the protection code appears under high temperature and other conditions, the machine can operate properly, which is normal. The protection will be eliminated when the temperature drops.
23
U3
Drive initialization fault
Outdoor unit drive start failure
1. Check whether the main power supply voltages of the outdoor unit (DC310V, DC15V, DC12V, DC5V) are normal;
2. Replace the outdoor unit control board (if the abnormal voltage is caused by the electronic expansion valve coil or the DC fan, replace the electronic expansion valve coil or the DC fan).
24
U4（U4.1/U4.2/U4.3/U4.4）
Step loss detection/Compressor step loss protection
Outdoor unit compressor out-of-step protection
1. System pressure imbalance, insufficient shutdown time-wait for 3-5 minutes before restarting;
2. Abnormal input voltage-use a voltage stabilizer;
3. Check whether the compressor wiring is properly connected and in the correct sequence-reconnect if necessary;
4. Faulty external fan motor-replace the motor;
5. Poor heat dissipation-clean the heat exchangers and improve the heat dissipation environment;
6. Control board phase sampling resistor value deviation or sampling circuit failure-replace the control board;
7. Excess refrigerant-recharge according to the required specifications;
8. Compressor failure (such as seizure, winding short circuit, or open circuit)-replace the compressor.
25
U5
Compressor phase loss/Reverse phase protection
Outdoor unit compressor missing/reverse phase protection
26
U6.1
Module temperature protection
Outdoor unit electronic control module temperature protection
1. Check the voltage; it should be between 170V and 270V—use a voltage stabilizer;
2. Check if the outdoor unit heat exchanger is dirty or blocked—remove obstructions or clean the condenser;
3. Ensure smooth airflow from the outdoor unit-remove any obstructions;
4. Check if the outdoor unit motor speed has decreased or if the fan blades are damaged-replace the motor or fan blades if needed;
5. If the module temperature detection circuit is faulty-replace the outdoor unit control board.
27
U6.2
Module temperature sensor circuit fault
The temperature sensing pack of the outdoor unit electronic control module is faulty
1. Check if the module board is making proper contact with the heat sink. Ensure tight, debris-free, and seamless contact between the module and the heat sink. Secure the module board screws properly. If needed, replace the outdoor unit control board;
2. Abnormal outdoor system or excessive compressor current—refer to U6.1;
3. Module temperature detection circuit failure—replace the outdoor unit control board.
28
U8.1
PFC hardware over-current
Outdoor unit electronic control PFC circuit over-current protection
1. System pressure imbalance, insufficient shutdown time—wait for 3–5 minutes before restarting
2. Abnormal input voltage—use a voltage stabilizer;
3. Check if the compressor wiring is properly connected and in the correct sequence—reconnect if necessary;
4. Faulty outdoor fan motor-replace the motor;
5. Poor heat dissipation-clean the heat exchangers and improve the heat dissipation environment;
6. Control board phase sampling resistor deviation or sampling circuit failure-replace the control board;
7. Excess refrigerant-recharge according to the required specifications;
8. Compressor failure (such as seizure, winding short circuit, or open circuit)-replace the compressor.
29
U8.2
PFC software over-current
Outdoor unit electronic control PFC circuit over-current protection
1. Sudden fluctuation in mains voltage—normal protection; use a voltage stabilizer;
2. Inductor (reactor) short circuit or PFC detection circuit failure-replace the outdoor unit control board.
30
U8.3
PFC RMS over-current protection
Outdoor unit electronic control PFC circuit over-current protection
1. System pressure imbalance, insufficient shutdown time-wait for 3–5 minutes before restarting;
2. Abnormal input voltage—use a voltage stabilizer;
3. Check if the compressor wiring is properly connected and in the correct sequence-reconnect if necessary;
4. Faulty outdoor fan motor-replace the motor;
5. Poor heat dissipation-clean the heat exchangers and improve the heat dissipation environment;
6. Control board phase sampling resistor deviation or sampling circuit failure-replace the control board;
7. Excess refrigerant-recharge according to the required specifications;
8. Compressor failure (such as seizure, winding short circuit, or open circuit)-replace the compressor.
31
Drive Limit Frequency Reduction (display 17)
C1
Module current (compressor phase current) protection limit/frequency reduction
Outdoor unit electric control module current limit/frequency reduction
1. Check if the voltage is too low; use a voltage stabilizer;
2. Check if the outdoor unit's heat exchanger is dirty or clogged; if the outdoor unit has poor heat dissipation due to being inside a grille: clean both heat exchangers and improve the heat dissipation environment;
3. Check if the airflow of the indoor/outdoor unit is obstructed; improve the heat dissipation environment;
4. Check if the indoor unit's filter is dirty or clogged; clean the filter and improve the heat dissipation environment;
5. Check if the rotation speed of the indoor/outdoor motor has decreased; replace the motor;
6. Check if the indoor/outdoor fan blades are damaged; replace the indoor and outdoor fans.
After excluding the actual current over-large protection, for example, if the actual current is lower than the rated current but the protection is still on, it may be due to a fault in the current detection circuit, causing the detected current to be greater than the actual current value. Replace the outdoor unit electronic control board.
32
C2
External AC current protection limit/frequency reduction
Outdoor unit electric control AC current limit/frequency reduction
33
C3
Compressor module temperature limit frequency reduction
Outdoor unit electric control module temperature limit/frequency reduction
34
C4
Whole machine current peak limit frequency reduction
Outdoor unit electric control current peak limit/frequency reduction
35
C5
Drive protection limit/frequency reduction
Outdoor unit electric control drive protection limit/frequency reduction
36
System Protection
P1
Outdoor unit exhaust temperature over-high protection
Outdoor unit exhaust temperature over-high protection
1. Check if the outdoor unit is operating under extreme high-temperature conditions. This protection is for the safety of the air conditioner;
2. Check if the outdoor unit is improperly installed, such as having obstructions at the air outlet, intense sun exposure, or poor ventilation. If so, adjust the installation position;
3. Check if the outdoor unit condenser or the indoor unit filter is dirty or blocked. If so, clean them promptly;
4. Check if the indoor and outdoor fans are not operating or running too slowly;
5. Check if the motor power supply circuit on the control board is normal, and if the motor capacitor is functioning properly. If not, replace the motor;
6. Check if the refrigeration system is clogged, and if the capillary tube is frosted and not melting. If so, replace the capillary tube or other clogged components;
7. Check if the system's operating pressure is normal (Connect a pressure gauge to measure the low-pressure side operating pressure. Normal cooling system pressure range is approximately 0.8-1.3MPa, and the normal heating system pressure range is approximately 2.0-3.6MPa) to determine if there is refrigerant leakage or air intake. If so, refill with the appropriate amount of R32 refrigerant;
8. Confirm if the exhaust temperature sensor is sensing the temperature correctly (resistance is normal). If the actual pipe temperature is low, and the detected temperature exceeds 100°C (for example, after 30 minutes of shutdown, there is a significant difference between 15 and 14), compare the sensor's resistance with the resistance table. If the resistance is abnormal, replace the sensor;
9. If all the above checks are normal, replace the outdoor unit control board.
37
P2
Limit/Reduction frequency (display 17)
 
 
38
P2.1
Exhaust protection limit/reduction frequency
Outdoor unit exhaust temperature over-high limit/reduction frequency
P2.1 Check according to P1
39
P2.2
Anti-freezing protection limit/reduction frequency
Refrigerant anti-freezing limit/reduction frequency
P2.2 Check according to P5
40
P2.3
Anti-condensation protection limit/reduction frequency
Indoor unit evaporator anti-condensation limit/reduction frequency
P2.3 Anti-condensation protection: When humidity is too high and the device is operating at low speed, reduce the frequency to prevent excessive condensation. This is a normal protection. Close windows and doors or adjust the fan speed to high.
41
P2.4
Power over-high limit/reduction frequency
Overall unit power over-high limit/reduction frequency
P2.4 Check according to U2
42
P2.5
Overload protection limit/reduction frequency
Overall unit overload limit/reduction frequency
P2.5 Heating overheat protection: Same as P4 or P6
43
P5
Over-cooling protection in cooling mode
Evaporator over-cooling protection in cooling mode
1. Check if the indoor unit filter is clogged. If so, clean it;
2. Check if the indoor unit's air intake is blocked by foreign objects (curtains, paper, etc.). If so, remove the objects blocking the air intake;
3. Check if the indoor unit's cross-flow fan is stuck. If so, replace the bearings or fan, and tighten the fan screws;
4. Check if the indoor fan is not running or running too slowly;
5. Check if the motor power supply circuit on the control board is normal and whether the motor capacitor is functioning properly. If not, replace the motor;
6. The internal coil temperature sensor's IPT resistance can drift, causing the temperature sampled by the chip to deviate from the actual temperature. Replace the internal coil temperature sensor. Use the remote control to check the device's detected internal coil temperature with code 12. If the reading is significantly low (it shouldn't normally be lower than 5°C), replace the internal coil sensor. If the fault cannot be cleared, replace the indoor control board;
7. Check if the system's operating pressure is normal (Connect a pressure gauge to check the low-pressure side's operating pressure. The normal cooling system pressure range is about 0.8~1.3MPa). If there is refrigerant leakage, refill with the required amount of R32 refrigerant;
8. If all the above are normal, it can be an issue with indoor and outdoor communication data, and the indoor control board needs to be replaced.
44
P8
Outdoor unit high/low temperature protection
Outdoor unit high/low temperature protection
1. Check if the outdoor ambient temperature is normal for cooling operation. If the ambient temperature is abnormal, it is normal protection. This occurs when the cooling temperature exceeds the protection range (low-temperature cooling is more likely to occur);
2. Observe if the outdoor unit is located in a confined or narrow space where heat dissipation is poor, causing the outdoor environment temperature to be too high or too low. If heat dissipation is confirmed to be poor, move the outdoor unit to ensure proper ventilation and heat dissipation;
3. If this code appears when the ambient temperature of the overall unit is within the normal range, it indicates that the outdoor ambient temperature sensor is faulty, resulting in inaccurate temperature sampling. First, replace the outdoor ambient temperature sensor. If replacing the sensor does not clear the fault, replace the outdoor power board.
45
PA
Refrigerant shortage protection/abnormal refrigerant circulation protection
Overall unit refrigerant shortage protection/abnormal refrigerant circulation protection
 
 
35. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter temperature is lower than the set temperature?
A: If the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is cooling below the set temperature, please check whether the room size is too small, which can cause the cold air to blow directly at you. The air conditioner is designed with a temperature compensation mechanism to enhance cooling performance, ensuring effective cooling even at a distance from the device.

36. Q: What to do if the display shows rotating lines after the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is turned off and does not shut off automatically?
A: When the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter is turned off, if the evaporator temperature is still low and a large amount of condensate remains, the device will keep the indoor unit fan running for a while. This is to help dry the evaporator and prevent microbial growth or mold caused by prolonged moisture inside the sealed unit. The display shows rotating lines during this process and will turn off automatically afterward.
 
37. Q: What to do if the Mijia Air Conditioner Pro Eco 5-Star 1.0 HP Inverter's region shows as Singapore when connected to the Xiaomi Home App?
A: This is because the Xiaomi Home App server is located in Singapore. Therefore, it is normal for the region to show as Singapore. You can change the region to the location where the device is used via Xiaomi Home App >> [Profile] >> [Additional settings] >> [Region].

Does it help?

Yes
No