2. If the FF fault code is reported as soon as the power is turned on, it may be that there is a fault in the electronic control, then determine whether it is an indoor or outdoor electronic control problem according to the normal inverter detection idea. Generally, there is a high probability of problems in indoor electronic control, and the specific situation can be analyzed by maintenance personnel according to the actual situation.
Extended data
Air conditioning common fault code:
1、? A6: The fan system is out of order, and there is something wrong with the fan motor.
2.C4: The outdoor tube temperature thermistor is faulty or the outdoor breeze thermistor is faulty.
3.U4: Poor contact or wrong connection between indoor unit and outdoor control line; Poor contact between indoor unit and remote controller.
4.E3: The high voltage causes the disconnection protection of the pressure relay or the failure of the high voltage controller itself.
5.P3: The temperature sensor in the electric box is faulty.