Common faults and treatment methods for water coolers

Common faults and treatment methods for water coolers

Author: Beijing Hengxing and Technology Co., Ltd. Â Â Source : http://

malfunction	the reason	Repair method
First, the chiller does not start, the indicator light does not light up.	1 , the voltage is not normal	Check the power supply to determine the three-phase balance
2 , the fuse is blown	Replace the fuse
3 , the transformer burned out	Replace the transformer or change the power supply to three-phase four-wire
Second, the compressor continues to run but the cooling capacity is insufficient.	1 , beyond the load	Reduce load
2 , the cooling water circulation is not normal	Check the temperature of the heat sink, whether the pressure cooling tower and the circulating water pump are working properly.
3 , the condenser is not clean or the fan is damaged	Clean the condenser or replace the fan
4 , insufficient cold water flow	Check if the pump is blocked or stopped, add bypass circuit to increase cold water flow
5 , evaporator icing	Jiang cold water is drained, the supplementary water is turned on, and the water pump is continuously circulated until the evaporator is thawed.
Third, the compressor overload light is on	The voltage is abnormal	Check the power supply to determine the three-phase balance
Compressor overload operation	Reduce load
The cooling water circulation is abnormal	Check the temperature and pressure of the cooling water and the water tower to see if the pump is working properly.
Compressor failure	Check the compressor and replace the compressor if necessary
After the repair, the reset system is required, and the chiller can be operated again.
Fourth, the pump overload light is on	The voltage is abnormal	Check the power supply to determine the three-phase balance
Pump impeller blocked	Clean the pump and replace it if necessary
Pump motor failure	Check bearings and coils, if necessary, replace the entire pump
	After the repair, the reset system is required, and the chiller can be operated again.
Fifth, the fan overload light is on	The voltage is abnormal	Check the power supply to determine the three-phase balance
Fan motor failure	Check the bearings and coils, if necessary, replace the entire fan
	After the repair, the reset system is required, and the chiller can be operated again.
Sixth, high / low voltage fault light is on	The condenser is not cleaned or the fan is damaged	Clean the condenser or replace the fan
The cooling water circulation system is normal	Check the heat sink temperature, pressure and water tower pump are working properly
Exceeded load	Reduce load
	After the repair, the reset system is required, and the chiller can be operated again.
Seventh, the compressor continues to operate, but cannot be cooled	Insufficient cold water flow, resulting in low refrigerant pressure	Check if the pump is blocked or stops operating. Add a bypass circuit to increase water flow
Refrigerant leakage, resulting in low pressure	Close the heat-dissipating water and cold water inlet and outlet valve, release the remaining refrigerant, add high-pressure nitrogen () to test the leak, find the leak position, repair, vacuum, add refrigerant, open the heat sink and cold water inlet and outlet valve
Expansion valve or filter occlusion	Release all the refrigerant, replace the expansion valve or filter, vacuum, add refrigerant
Eighth, the heat flow water fault light is on	Heat dissipation flow is blocked	Check if the valve between the cooling water is closed or blocked by debris
Insufficient heat flow	Check if the pump is blocked or stopped
Ninth, the chilled water flow fault light is on	Frozen water flow blocked	Check if the valve is closed or blocked by debris between chilled water flows
Insufficient chilled water flow	Check if the pump is blocked or stopped
Tenth, the pump starts, but the compressor does not start, the indicator light does not light up.	Time system failure	Check if the electronic board or time system is loose or damaged, and replace it if necessary.
Compressor magnetic switch burnt out	Replace the magnetic switch system
Temperature control meter or thermocouple failure	Replace the temperature control meter or thermocouple
Compressor failure	Check the compressor and replace it if necessary

'Common faults and treatment methods for water coolers

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