Haier CA0065EANR, Инструкция по установке и эксплуатации

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7.2 Common faults and handling
S/
N
Fault description Possible cause Troubleshooting Remarks
1
Too high
exhaust
pressure
1.Air or non-condensable gas found in the system Discharge and empty, if necessary, the
non-condensable gas
Cooling/heating
2.High suction pressure
Refer to “High Suction Pressure"
Cooling/heating
3.Undesirable high-pressure switch Replace the high-pressure switch Cooling/heating
4.Dirty or clogged fin of the condenser Clean the air-side heat exchanger Cooling
5.Insufficient air capacity or faulty fan of the
condenser. Check the fan Cooling
6.High charge of refrigerant Adjust the charge of refrigerant Cooling
7.High ambient temperature Inspect the ambient temperature Cooling
8.Insufficient water flow Check the water flow Heating
9.Water-side heat exchanger scaling or with
foreign matters inside Clean up the incrustation scale Heating
10.High outlet temperature of water-side heat
exchanger Check the water temperature Heating
2
Low suction
pressure
1.Insufficient refrigerant Adjust the charge of refrigerant Cooling/heating
2.Undesirable low-pressure switch Replace the low-pressure switch Cooling/heating
3.Insufficient water flow Check the water flow Cooling
4.Low water inlet temperature at water side Check the water temperature Cooling
5.Water-side heat exchanger scaling or with
foreign matters inside Clean up the incrustation scale Cooling
6.Insufficient air capacity Check the fan Heating
7.Short circuit found in air circuit Check the cause of short circuit and take
troubleshooting Heating
8.Incomplete defrosting Replace the poor 4-way valve or defrosting
sensor Heating
3
Too low exhaust
pressure
1.Lack of refrigerant Adjust the charge of refrigerant Cooling/heating
2.Low suction pressure
Refer to “Low Suction Pressure"
Cooling/heating
3.Low ambient temperature of air-side heat
exchanger Check the ambient temperature Cooling
4.Too low water temperature at water side Check the water temperature Heating
4
1.Too high charge of refrigerant Adjust the charge of refrigerant Cooling/heating
High suction
pressure
2.High water inlet temperature at water side Check the water temperature Cooling
3.High ambient temperature of air-side heat
exchanger Check the ambient temperature Heating
5
Overtemperatur
e of exhaust
temperature
sensor
1.Poor ventilation around the unit Clean up the obstacles around the unit, or
add air ducts Heating
2.Too low ambient temperature Shut down Heating
3.Dirty or clogged filter at fluorine side Replace the filter Cooling/heating
4.Incomplete frosting (for heating) or no frosting Change the frosting parameters Heating
6
Open circuit or
short circuit of
temperature
sensor
1.Damaged sensor Replace the sensor Cooling/heating
2.Poor connection of sensor Reconnect the sensor
7 Abnormal noise
1.Loose metal plate bolts Retighten bolts
2.Liquid impact due to entry of liquid refrigerant
into the compressor Adjust the charge of refrigerant or the poor
throttling device Cooling/heating
3.Poor compressor Replace the compressor