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6.2 Other Malfunctions and Solutions (No display on LED wire controller)
7. Maintenance
(1) You should check the water supply system regularly to avoid the air entering the system and occurrence of
low water flow, because it would reduce the performance and reliability of HP unit.
(2) Clean your pools and filtration system regularly to avoid the damage of the unit as a result of the dirty of
clogged filter.
(3) You should discharge the water from heat pump if it will stop running for a long time (especially during the
winter season).
(4) In another way, you should check the unit is water fully before the unit start to run again.
(5) When the unit is running, there is all the time a little water discharge under the unit.
Malfunctions Observing Reason Solution
Heat pump is
not running
LED wire controller
no display.
No power supply.
Check cable and circuit breaker if
it is connected.
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.
1. Verify water temperature
setting.
2. Start up heat pump after a few
minutes.
Short running
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
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.