14
Water pressure too low / Incorrect parameter setting
Excessive water pressure
Domestic hot water NTC probe faulty
Heating NTC probe faulty
Fumes NTC probe faulty
Block due to the tripping of the fumes probe
Fan control anomaly
Failure to start up
Safety thermostat has tripped
Parasitic flame
NO water circulates in the circuit
NTC return probe failure
Overtemperature of the system (TCH> TSP81)
Delta T CH/Ret > TSP82 (1)
Gas valve modulator disconnected
Boiler probe faulty (if connected)
Wrong ACS control or incorrect reading of the flow meter
Maximum number of RESETS has been reached
Low power supply
Fault in the power supply frequency.
Fault