8. Troubleshooting
8.1 system protection/ error indication
Water pump will run automatically for first grade
antifreeze
1. Discharge redundant refrigerant from heat pump
gas system
2.Clean the water exchanger or water filter
1.Check if there is any gas leakage, re-fill the
refrigerant
2.Replace the filter or capillary
communication failure between
Display and PCB
1. Check if the communication connection wire
between display and PCB is disconnected or has
poor contact. Change the wire or mend it if yes.
2. Check if PCB or display is damaged. Change the
corresponding part if yes.
communication failure of frequency
conversion module (alarm when
communication between display
and PCB are disconnected)
excessive exhaust temp protection
1. Replace the compressor discharge temperature
sensor.
2. Reconnect or clean compressor discharge
temperature sensor and wrap it with insulation tape.
Replace the controller or PC Board.
Water inlet temperature failure
Check or change the sensor
external coil temperature failure
Check or change the sensor
exhaust temperature failure
Check or change the sensor
1. Check if DC fan motor is damaged. Change it if
damaged.
2. Check if DC fan motor output port on PCB has
output. Change PCB if no output.
Abnormal protection of frequency
conversion module
Solve it according to the subsidiary error codes in the
following table.
ambient temperature failure
Check or change the sensor
too low cooling outlet water temp
protection
Check whether the water flow or water system is
jammed or not
water outlet temperature failure
Check or change the sensor
Total current overcurrent protection
Keep the voltage within the normal operating voltage
range of the machine
Return gas temperature failure
Check or change the sensor
Too high heating outlet water
temperature protection
Check whether the water flow or water system is
jammed or not
To Next Page
Loading...