What's wrong with Gree air conditioner not working? Xi' an air-condition maintenance

There may be power failure, please wait for the power supply to be restored; The power switch may not be turned on, please turn on the power switch; There may be poor contact between the power plug and the socket, please check whether the power plug is inserted in place; It may be that the battery of the remote controller is dead, or it can't be remotely controlled by reverse installation. Please install the battery correctly or replace it with a new one. The power supply voltage may be low, please check the voltage at home. Solution for non-working outdoor unit of air conditioner: 1. Incorrect remote control mode: Use the air conditioner remote control to adjust the mode to display "Refrigeration" or "Snowflake" and set the temperature to 26 degrees or below. 2. Power failure: Pay attention to whether the outdoor unit has working sound. When the outdoor fan is running, the control circuit is basically normal. At this time, observe whether the compressor is started. If the compressor is not started, check whether the power supply is normal. 3. Computer board failure: Check whether the computer board works normally. If there is any abnormality, please ask professional maintenance personnel to check and repair. 4. Component damage: When the capacitor of the air-conditioning compressor is damaged, or the air-conditioning compressor is damaged, so that the air-conditioning outdoor unit cannot work normally, it is necessary to repair or replace the air-conditioning compressor. When the outdoor fan of the air conditioner is damaged, it is necessary to replace the outdoor fan to ensure the normal operation of the outdoor air conditioner. 5. AC contactor failure: If AC contactor is detected to be damaged, a new AC contactor needs to be replaced. 6. If the air conditioner is not maintained for a long time, the outdoor unit of the air conditioner will not turn. The reason why the outdoor unit of the air conditioner does not turn may be that the screw and locking part of the wind wheel are loose; The flat position of the motor does not match the position of the wind wheel.