GRE HPM20 Manual De Instrucciones página 69

7. Trouble shooting
7.1 Error code on the LED controller
Malfunction
Too low ambient
temperature protection
Water temperature sensor
failure
Ambient temperature
sensor failure
Low pressure protection
Code Reason
1. Ambient temperature is
below 12℃
P0
2. Controller failure.
Water temperature sensor
P1
open circuit or short circuit.
Ambient temperature sensor
P2
open circuit or short circuit.
1. Low pressure switch
disconnected or failure.
EL
2. Gas leakage.
- 67 -
Solution
1. Wacht tot de
omgevingstemperatuur is
gestegen tot 13 ℃.
2. Replace the new controller.
Replace the new water
temperature sensor.
Replace the new ambient
temperature sensor.
It must be repaired by the
professional technicians.