F3 air conditioner does not work. What happened?

It may be a communication fault: in this case, it is usually that the signal wires of the indoor unit and the outdoor unit are broken or leaking. It is suggested to check whether the black connecting wire between the indoor unit and the outdoor unit is loose, replace the signal wire connecting the indoor unit and the outdoor unit, and try the machine again.

2. It may be that the motor is blocked or the motor does not turn: this situation is usually an open circuit fault of the air conditioning circuit, especially in public places such as hotels. It is recommended to check whether there is a problem with the circuit. If there is no problem with the wiring, observe whether the wiring above the terminal board is wrong. Disconnect the power supply, and then turn it on.

3. There may be sundries in the air conditioner: In this case, it is usually necessary to turn off the main power supply, open the lower cover, take out the filter screen and clean the electrostatic precipitator with a brush. In addition, check whether the refrigeration pipeline is blocked, and if so, clean the pipeline.

4. It may be refrigeration overload protection: in this case, the circuit board usually fails and needs to be sent to the after-sales or professional maintenance agency to replace the circuit motherboard of the indoor unit.