Possible reasons for the malfunction
- Power Failure
- Power wire loose
- Control power fuses broken
- High and low pressure protection switch short-circuit
- AC circuit devices or circuit board failure
Solutions
- Disconnect the power switch, check the main circuit, power supply, voltage, whether there is electricity, or lack of phase
- Identify the causes and fixes
- Change new fuses
- Fix or change the switch
- Fix or change circuit board
Possible reasons for the malfunction
- Lacking water in Water systems ◇Air in Water systems
- Some water valves closed ◇Blocked or dirty filters
Solutions
- Inspect the water system, and replenish it
- Release the air
- Open water valve
- Remove blockage & wash filters
Possible reasons for the malfunction
- Refrigerant shortage
- Bad water system insulation
- Bad heat exchanger cooling
- Lack of water flow
- Filter blocked
Solutions
- Check leakage and replenish
- Check the heat preservation
- Wash air heat exchanger
- Clean or change filter
- Clean or change filter
Possible reasons for the malfunction
- Power supply failure
- Compressor contactor is damaged
- Loose wiring
- Compressor overheat protection
- High and low pressure protection switch short-circuit
- Water overheat protection
- Lack of water flow
Solutions
- Identify the causes and correct
- Change compressor contactor
- Identify the loose point and correct
- Check the exhaust temperature protection switch open circuit or not, to identify the reasons for overheating before using
- Fix or change the switch
- Reset the outlet water temp
- Wash filters and release air
Possible reasons for the malfunction
- Liquid refrigerant into the compressor
- Insufficient lubrication
- Compressor internal parts damaged
Solutions
- Check whether the expansion valve failure
- Add oil
- Change Compressor
Possible reasons for the malfunction
- Fan screw loose
- Electrical burn
- Contactor damage
Solutions
- Tighten fan screw
- Change the fans
- Change contactor
Possible reasons for the malfunction
- Refrigerant totally leaked
- Compressor Malfunction
Solutions
- Leakage check and add refrigerant
- Change compressor
Possible reasons for the malfunction
- Air in the system caused high pressure increases, which turns off the protection Switch
- Excessive refrigerant
- Abnormal power supply voltage or not enough diameter wire, excessive power supply circuits caused small starting current
- High and low pressure protection switch malfunction or air exhaust temp switch malfunction.
Solutions
- Vacuum and add refrigerant
- Discharge excess refrigerant
- Return to normal power supply
- Change switch
Possible reasons for the malfunction
- Excessive refrigerant
- Air in the system (Air-type non-condensable gas)
- Lack of water flow
- Excessive scale in condenser
Solutions
- Discharge excess refrigerant
- Discharge non-condensable gas
- Check water system and increase water flow
- Clean condense
Possible reasons for the malfunction
- Lack of refrigerant
- Circulating water temperature or the ambient temperature is too low
- Pressure drop through the heat exchanger
Solutions
- Filling amount of refrigerant
- After the water is back to the temperature, and then check the pressure
- Check expansion valve opening
Possible reasons for the malfunction
- Fan motor malfunction
- Fan Capacitor Failure
Solutions
- Fix or change fan motor
- Change the Fan Capacitor in same model
Possible reasons for the malfunction
- Compressor coil burnt or inter-turn short-circuit
- Compressor choked
- Electrical leakage
Solutions
- Change Compressor
- Change Compressor
- Check lines and electrical appliances
