Display Controlleroperation - GRE HPM20 Manuel D'instructions

6. Display controller operation
6.1 The buttons of LED wire controller
When the heat pump is running, the LED display shows the water inlet temperature.
LED 1 is on when compressor is running.
LED 2 is on if the unit is in fault.
6.2 Turn on/off the heat pump
Press to turn on the heat pump, the LED display shows the water setting temperature for 5s, then show
water inlettemperature.
Press again to turn off the heat pump.
6.3 Set the water temperature
Press or directly to adjust water temperature (range:.10—42℃)
Press to save the setting thenexit.
NOTE: the heat pump can run only if the water circle/filtration system is running.
6.4 Parameter checking
Press ，it will enter the parameter checking, Press
again, it will show the measured value.Lastly press
Code Parameter
d0 Ambient temperature
d1 Water temperature
Notice: It can't set the Parameter data by end-users.
or to choose the code d0/d1，press
to exit.
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