54
ENGLISH
Troubleshooting
FAULT
CAUSE
SOLUTION
There is a smell of fumes
Fumes escaping into the air
- Check that the burner body is clean
- Check that the flue pipes are clean
- Check the condition of the boiler seals
- Check the quality of combustion
The boiler gets dirty very quickly
Burner badly adjusted
- Check adjustment of burner (perform
flue gas analysis)
Blockage in stack
- Clean flue pipes
Burner air intake dirty
- Clean the burner air intake
The generator is at temperature but
the heating system is cold
Air in the circuit
- Bleed the circuit
Pump malfunctioning
- Check/unseize the pump
- Change the pump
The boiler does not reach its tempera-
ture setpoint
Dirt boiler body
- Clean
Burner capacity insufficient
- Check and adjust the burner
Boiler temperature setpoint
- Check correct functioning
- Check the temperature setting
The generator triggers a thermal safe-
ty block
Safety thermostat / delivery overtemper-
ature
- Check correct functioning
- Check the temperature setting
- Check the electrical wiring
- Check the position of the sensor bulbs
No water
- Check the bleed valve
- Check the heating circuit pressure
The safety valve keeps opening
Incorrect central heating circuit pressure
- Check the circuit pressure
- Check pressure reducer functioning
- Check efficiency of safety valve
CH expansion vessel
- Check the efficiency of the expansion
vessel
The circulator does not work
Pump seized
Electrical connections
- Check the pump and connections
The request from the ambient thermostat
is missing
- Check the temperature controller, sen-
sors and connections