What to do if the timer on/off function of the Mijia Air Conditioner Pro Eco 5-Star 1 PK Inverter does not work?

If Timer of the Mijia Air Conditioner Pro Eco 5-Star 1 PK Inverter cannot be used, please refer to the following details:
1. First of all, please check whether the air conditioner is connected to the network normally. Timer requires the network to be normal to perform;
2. If the air conditioner is connected to the network normally, but Timer still cannot be used, please try to restart the air conditioner to see if it can solve the problem;
3. If the problem persists after restarting the air conditioner, please check whether you have set Timer through the Mi Home/Xiaomi Home APP. If so, make sure that the memory chip of the air conditioner is not reset due to power failure. If the air conditioner is configured with Timer through the Mi Home/Xiaomi Home APP, it will not be able to execute after disconnection, because the Mi Home/Xiaomi Home APP needs to send instructions to the air conditioner through the network.