1. Dirty air filter: This process is the accumulation of dust and impurities in polluted air inside the filter. If it is not cleaned or replaced, cleaning and replacement in strict accordance with the instructions may lead to F5 failure.
2. Sensor failure: The sensor inside the air conditioner is prone to failure. Check whether the sensor is in poor contact, otherwise its reading will be difficult to provide you with accurate information and may lead to F5 failure.
3. Indoor circuit board failure: The indoor circuit board is a device connecting internal and external components such as air filter, air capacitor, refrigerant and indoor fan. If the circuit board is damaged or affected by water and power fluctuation, it may lead to F5 failure.
4. Remote control failure: If your remote control fails, your air conditioner may have F5 failure. The remote controller is connected to the indoor circuit board, and F5 failure may be caused by the failure of the remote controller receiver on the circuit board.
In order to avoid these failures, please clean and replace the air filter regularly, and maintain it regularly, so as to ensure that the internal sensor is normal and avoid the circuit board from being affected. If F5 fails, be sure to find the problem, and don't use the air conditioner until the problem is solved, so as to avoid more problems. If you encounter an uncontrollable situation, please contact professional and technical personnel for help.