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8.2 Other Malfunctions and Solutions (No display on LED wire controller)
Malfunctions
LED wire controller
no display.
LED wire controller.
Displays the actual time.
Heat pump is
not running
LED wire controller
displays the actual
water temperature.
Water temperature is
LED wire controller displays
cooling when HP runs
actual water temperature and no
under heating mode
error code displays.
LED displays actual water
Short running
temperature, no error code
displays.
water stains
Water stains on heat pump unit.
Too much ice on
Too much ice on evaporator.
evaporator
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Observing
No power supply
Heat pump under standby
status
1. Water temperature is
reaching to setting value, HP
under constant temperature status.
2. Heat pump just starts to run.
3. Under defrosting.
1. Choose the wrong mode.
2. Figures show defects.
3. Controller defect.
1. Fan NO running.
2. Air ventilation is not enough.
3. Refrigerant is not enough.
1. Concreting.
2. Water leakage.
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Reasons
Solution
Check cable and circuit breaker if
it is connected
Startup heat pump to run.
1. Verify water temperature
setting.
2. Startup heat pump after a few
minutes.
3. LED wire controller should
display "Defrosting".
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
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.
1. No action.
2. Check the titanium heat
exchanger carefully if it is any
defect.
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.
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