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TECHNICAL ASSISTANCE SERVICE
70
FAULT
CAUSE
SOLUTION
Heat exchanger dirty
- Clean the combustion chamber
Insufficient air/fuel flow to burner
- Check and adjust the burner
Incorrect boiler temperature set-
point
- Check the temperature setting
The boiler does not reach its
temperature setpoint
Incorrect boiler temperature set-
point
- Check correct functioning.
- Check the temperature setting.
- Check electrical wiring.
No water supply
- Check the vent and bleed valves.
- Check CH circuit pressure.
Burner locks out
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
There is a smell of fumes
Leaks from the supply circuit
- Check that all joints are tight and
that the pressure measurement
points are closed
There is a smell of gas
Air in the circuit
- Bleed the circuit
Pump malfunctioning
- Unseize the pump
- Change the pump
The boiler reaches the set tem-
perature but the radiators are
still cold