Norsup 7021075 Mode D'emploi page 32

Water temperature
(T2) too low
PP 11
protection under
cooling mode
7.2 Other Malfunctions and Solutions (No display on LED wire controller)
Malfunctions Observing
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
LED wire controller
temperature is
displays actual water
cooling when HP
temperature and no
runs under
error code displays.
heating mode
LED displays actual
Short running water temperature, no
error code displays.
Water stains on heat
water stains
pump unit.
Too much ice on Too much ice on
evaporator evaporator.
1. Low water flow
2. T2 temperature
abnormal
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.
29
1. Check water pump and waterway
sensor system
2. Change T2 temperature sensor
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.