AIR-TO-WATER HEAT PUMP INSTALLATION MANUAL
Troubleshooting
Malfunctions
Reasons
Troubleshooting
Compressor does
not start up
A. Power supply has
problem
B.
Connection wire is loose.
C. Malfunction
of
mainboard
D. Malfunction of
compressor
z
Phase sequence is reverse
z
Check out and re-fix
z
Find out the reasons and repair.
z
Replace compressor
High noise of fan
A.
Fixing bolt of fan is loose
B.
Fan blade touches shell or
grill
C.
Operation of fan is
unreliable
z
Re-fix fixing bolt of fan
z
Find out the reasons and adjust
z
Replace fan
High noise of
compressor
A. Liquid slugging happens
when liquid refrigerant
enters into compressor
B. Internal
parts
in
compressor are broken
z
Check if expansion valve is failure and
temp. sensor is loose .If that, repair it.
z
Replace compressor
Water pump does
not run or runs
abnormally
A. Malfunction of power
supply or terminal
B. Malfunction of relay
C. There is air in water pipe
z
Find out the reasons and repair
z
Replace relay
z
Evacuate
Compressor starts
or stops frequently
A. Poor or excess refrigerant
B. Poor circulation of water
system
C.
Low load
z
Discharge or add part of refrigerant
z
Water system is blocked or there is air in
it. Check water pump, valve and pipeline.
Clean water filter or evacuate
z
Adjust the load or add accumulating
devices.
The unit does not
heat although
compressor is
running
A. Leakage of refrigerant
B. Malfunction
of
compressor
z
Repair by leakage detection and add
refrigerant
z
Replace compressor
Poor efficiency of
hot water heating
A. Poor heat insulation of water
system
B. Poor heat exchange of
evaporator
C. Poor refrigerant of unit
D. Blockage of heat exchanger
at water side
z
Enhance heat insulation efficiency of the
system
z
Check if air in or out of unit is normal and
clean evaporator of the unit
z
Check if refrigerant of unit leaks
z
Clean or replace heat exchanger.
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Summary of Contents for GSH-100ERA series
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