8.2 Other Malfunctions and Solutions (No display on LED wire controller)
LED wire controller
no display.
Check cable and circuit breaker if it is
connected
LED wire controller.
Displays the actual time.
Heat pump under standby
status
Startup heat pump to run.
LED wire controller
displays the actual
water temperature.
1. Water temperature is
reaching to setting value, HP
under constant temperature
status.
2. Heat pump just starts to
run.
3. Under defrosting.
1. Verify water temperature setting.
2. Startup heat pump after a few
minutes.
3. LED wire controller should display
"Defrosting".
Water temperature is
cooling when HP runs
under heating mode
LED wire controller displays
actual water temperature and no
error code displays.
1. Choose the wrong mode.
2. Figures show defects.
3. Controller defect.
1. Adjust the mode to proper running
2. Replace the defect LED wire
controller, and then check the status
after changing the running mode,
verifying the water inlet and outlet
temperature.
3. Replace or repair the heat pump
unit
LED displays actual water
temperature, no error code
displays.
1. Fan NO running.
2. Air ventilation is not
enough.
3. Refrigerant is not enough.
1. Check the cable connections
between the motor and fan, if
necessary, it should be replaced.
2. Check the location of heat pump
unit, and eliminate all obstacles to
make good air ventilation.
3 Replace or repair the heat pump
unit.
Water stains on heat pump unit.
1. Concreting.
2. Water leakage.
1. No action.
2. Check the titanium heat exchanger
carefully if it is any defect.
Too much ice on
evaporator
Too much ice on evaporator.
1. Check the location of heat pump
unit, and eliminate all obstacles to
make good air ventilation.
2. Replace or repair the heat pump
unit.
8.
8.8.
Troubleshooting
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