Precision air conditioners are specialized air conditioners for computer rooms. Once the precise air conditioners fail, they cannot be eliminated in time, which may cause the high temperature electronic equipment in the computer room to burn out seriously.

　　1. High-pressure alarm problem of precision air-conditioning compressor

　　Possible reasons: 1. The outdoor unit is too dirty, 2. The outdoor fan is damaged and does not rotate, 3. The outdoor unit has no power, 4. The high-voltage switch is not reset;

　　Treatment methods: 1. Clean the outdoor unit, 2. Replace the outdoor unit motor, 3. Check the circuit and switch, 4. Reset the switch, and clear the fault before resetting.

　　Second, the problem of precision air conditioning compressor failure

　　Possible causes: 1. The compressor is damaged, 2. The compressor protector is damaged, 3. The compressor control circuit is in poor contact;

　　Treatment methods: 1. Replace the compressor, 2. Replace the compressor protector, 3. Check the wiring.

　　3. Low-pressure alarm problem of precision air conditioning

　　Possible causes: 1. A / C system lacks fluorine leakage, 2. The thermal expansion valve fails, 3. The filter is too dirty, the fan belt is too loose, 4. The return air is not good;

　　Treatment methods: 1. Add fluoride after repair, 2. Replace the thermal expansion valve, 3. Clean and replace the filter, adjust the fan belt, 4. Reform the return air.

　　Fourth, the problem of airflow failure of precision air conditioning

　　Possible causes: 1. The A / C power supply is reversed, 2. The fan circuit breaker switch is not closed, 3. The A / C power supply is out of phase, 4. The fan belt is too loose, the filter is too dirty, 5. The airflow interruption device fails, 6 . The return wind is not good;

　　Treatment methods: 1. Reverse the phase sequence, 2. Close the switch, 3. Check whether the three-phase power supply is normal, 4. Adjust the fan belt, replace the filter, 5. Adjust and replace the failure relay, 6. Reform the return air.

　　5. Electric power and thermal failure of precision air conditioning

　　Possible causes: 1. The thermal protector is damaged, 2. The filter is too dirty, 3. The fan belt is too loose;

　　Treatment methods: 1. Replace the thermal protector, 2. Replace the filter screen, 3. Adjust the fan belt.

　　Six, the fault problem of precision air conditioning humidifier

　　Possible causes: 1. The humidifier alarm is not reset, 2. The inlet valve is not open, lack of water, 3. The inlet valve is damaged, blocked, 4. The humidified water tank is damaged, and scale

　　Treatment methods: 1. Alarm reset, the fault should be eliminated before reset, 2. Check the water source, 3. Clean, replace the inlet valve, 4. Replace the humidified water tank.