What to do if the Mijia Air Conditioner displays error code PD?

The Mijia Air Conditioner displays PD, which means high pressure protection.
You can troubleshoot it by the following steps:
1. Check if the air flow from the outdoor unit is not smooth or blocked. Please remove the outdoor unit shielding;
2. Check if the outdoor unit is placed in the grille, which leads to poor heat exchange. Please remove the grille.
If the above cannot solve the problem, it is recommended to apply for on-site inspection by after-sales service.