What is the reason why Gree air conditioner does not display FO after dehumidification? Hangzhou air-condition maintenance

FO stands for refrigerant leakage. When the valve is blocked or short of fluorine, this protection will appear, indicating that the system is short of fluorine or the protection is blocked. It may be the protection caused by the failure of parts. It is also possible that the room temperature sensor is faulty, and it is necessary to open the panel to replace the sensor. Cause analysis: 1. Consider fluorine shortage or valve blockage. In this state, when the valve is opened, FO will appear. 2. If the system is short of fluorine, or exhaust protection, or lockout protection, FO will appear in charging mode. 3. Indicates that the system is short of fluorine or blocked. 4. If it is a new machine, there is no problem during installation, and there is generally no refrigerant leakage. At this time, it may also be a protection mode caused by component failure. 5. There may be something wrong with the room temperature sensor. Just open the panel and reset the sensor. Solution: 1, indoor temperature sensor failure. 2. Presumably, it is because the remote control misoperation turned on the new frost function. When the remote control is turned off, press the "mode" button and the "dry" button on the remote control at the same time. The "Auxiliary Heating" key exits the new defrosting function. 3. If the outdoor temperature becomes very low, the air conditioner will defrost frequently and the heating will suddenly drop. 4. Automatically recover after completion. It is best to sweep the filter once a month or so. Please don't turn off the air conditioner when defrosting. Defrosting is a normal working state of air conditioning in winter.