What is the reason why the air-conditioning compressor stops working for a period of time?

1. The outdoor temperature of the air conditioner is too high, and there is something wrong with heat dissipation. The compressor has been prevented from working by the high-temperature overload protector, so it is necessary to cool the outdoor unit, especially the compressor, and clean the heat sink of the outdoor unit with cleaning agent to better dissipate heat.

2. If the temperature sensing probe is damaged, replace the sensor.

If the compressor capacitor is damaged, please replace it with a new one.

Common faults of air conditioning compressor:

1. The winding contacting the housing is short-circuited, open-circuited and grounded.

This fault is caused by the motor part of the compressor. The fault phenomenon is that the power supply is normal and the compressor does not work when the circuit is open. In case of short circuit and shell collision, the protector acts after being energized, or the fuse is blown; It should be noted that if the winding turns are slightly short-circuited, the compressor can still work, but the working current is very large and the compressor temperature is very high. Before long, the thermal protector will act.

Winding short circuit and winding contact bushing grounding can generally be checked by multimeter; Winding short circuit, especially slight short circuit, is not easy to judge because of the small resistance of the winding itself, and it should be judged according to the measured current.

Second, the compressor shaft and cylinder.

If the compressor loses oil or impurities enter, it will often cause shaft locking or cylinder sticking. The fault phenomenon is that the compressor doesn't work and the protector acts after power-on.

Third, the compressor suction valve and exhaust valve are not closed correctly.

If the compressor suction and exhaust valve is damaged, even if the refrigerant is sufficient, the system can't establish high and low pressure or it is difficult to establish qualified high and low pressure, and the system doesn't cool or the cooling effect is poor.

Fourth, the vibration and noise of the compressor.

This kind of problem often occurs in maintenance work, which generally has little effect on refrigeration performance, but it will make users feel abnormal. The reason is often that the pipeline collides with the casing, the compressor fixing bolt is loose, and the damping block falls off.