What's wrong with the air conditioner not cooling? Check whether the power supply voltage is normal, Shenzhen air conditioning maintenance.

1. The reason why the air conditioner doesn't cool 1, the compressor doesn't work 2, the system has no refrigerant 3, the system is blocked 4, the internal machine doesn't work 5, the compressor or the four-way valve leaks 6, the outdoor temperature is above 43 degrees 2, the reason why the air conditioner has poor cooling effect 1, the system lacks refrigerant 2, the system is slightly blocked 3, the internal fan network is blocked 4, and the external machine cools. The room is too big or the thermal insulation performance is poor. 9. Too much refrigerant 10, insufficient air displacement during air conditioning installation 1 1, air leakage of four-way valve 12, and unstable power supply voltage. The air conditioner is heating! Just turn it back to the cooling state! The air conditioner in Shenzhen is not refrigerated for maintenance.