GRE HPG25 Manual De Instrucciones página 26

7.2 Malfunction display on PCB
Protection /Malfunction
Heat pump standby status
Heat pump running
Low ambient temperature
protection
Inlet water temperature sensor
failure
Outlet water temperature
sensor failure
Heating condenser sensor
failure
Gas return sensor failure
Ambient temperature sensor
failure
Temperature difference too
much protection between
water inlet and outlet
First grade antifreeze
protection in Winter
Second grade antifreeze
protection in Winter
High pressure protection
Low pressure protection
Flow switch closed
Inlet and outlet water
temperature difference
malfunction
Defrosting
Controller display
ON
Water in temperature
PP0
PP1
PP2
PP3
PP4
PP5
PP6
PP7
PP7
EE1
EE2
ON/EE3
EE5
Defrosting
23
Malfunction light display on PCB
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