Too low or too high
ambient temperature
protection
Water flow failure
6.2 Other Malfunctions and Solutions (No display on LED wire controller)
Malfunctions
Heat pump is
LED wire controller
not running
no display.
LED wire controller
displays the actual
water temperature.
Short running
LED displays actual
water temperature, no
error code displays.
Water stains
Water stains on heat
pump unit.
P7
1.
Ambient temperature is
out ofoperating range:11℃- 42℃.
2.
Controller failure.
E3
1. Insufficient or no water flow.
2. The wiring for water flow
switch is in loose situation.
Observing
No power supply.
1.
isreaching to setting value, HP
under constant temperature
status.
2.
to run.
1. Fan NO running.
2. Air ventilation is not enough.
3. Refrigerant is not enough.
1. Concreting.
2. Water leakage.
1. Wait the ambient temperature
2. Replace the new controller.
1. Check the water pump or
2. Check the wiring or change a
Reason
Water temperature
Heat pump just starts
risingto 13℃ or cooling down
to 40℃ to restart.
waterpiping system.
newwater flow switch.
Solution
Check cable and circuit breaker if
it is connected.
1.
Verify water
temperaturesetting.
2.
Start up heat pump after
a fewminutes.
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
heatexchanger carefully if it is
any defect.