Overheating in heating mode
Failure of water pump
Water pipe jammed
Failure of water flow switch
Gas exhaust temperature sensor
failure
Defrosting is not good
Lack of gas
The throttling device is
jammed
Low water flow
Defrosting by hand
Plus, the gas
Change the throttling device
Check the water pump
Wire connection is not good
Controller failure
Check or change the signal
wire
Restart the power supply or
change the controller
Restart the power supply or
change the converter board
Communication failure
between controller and
converter board
Wire connection is not good
Controller failure
Check or change the wire
connection
Restart the power supply or
change the controller
Communication failure
between converter and outdoor
board
Wire connection between
communication wire and
outdoor board is wrong
Outdoor board failure
Rewiring
Restart the power supply or
change the outdoor board
module board failure between
outdoor board and module
board
Communication wire is broken
Outdoor board or module
board failure
Restart the power supply or
change the broken board
The data is wrong or the
module board is broken
Restart the power supply or
change the broken board
Direct main current’s voltage
too high or too low protection
The pressure is too high or too
low
The inner communication
contactor is broken
Check the power supply
Change the contactor
Electric supply pressure is too
low, the heat pump is overload
Check the power supply
Check the water temperature
whether it is too high
IPM module temperature
sensing circuit output
failure
IPM module temperature
sensor output is abnormal
Check the PC board or
replace the new one
IPM module temperature
too high protection
Check the PC board or
replace the new one
8.
8.
8.
Troubleshooting
Troubleshooting
Troubleshooting
To Next Page
Loading...
