Racer INVERTER 7 Notice D'installation Et D'utilisation page 84

8.2 Other Malfunctions and Solutions (No display on LED wire controller)
Malfunctions
Heat pump is
not running
Water temperature is
cooling when HP
runs under heating
mode
Short running
water stains
Too much ice on
evaporator
Observing
LED wire controller
no display.
LED wire controller.
Displays the actual time.
LED wire controller
displays the actual
water temperature.
LED wire controller displays
actual water temperature and
no error code displays.
LED displays actual water
temperature, no error code
displays.
Water stains on heat pump
unit.
Too much ice on evaporator.
Reasons
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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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.