65
TECHNICAL ASSISTANCE SERVICE
ENGLISH
TROUBLESHOOTING
b
The first time the boiler is started up and the first time it restarts after a burner lockout or temperature lockout, the
burner performs fuel preheating for about 2 and a half minutes. On subsequent startups the motor starts as soon
as the boiler controller requests heat.
b
For information on burner troubleshooting refer to the section of this manual dedicated to the burner.
CAUSE
CORRECTIVE ACTION
FAULT
Burner badly adjusted.
- Check the adjustment of the
burner (perform flue gas
analysis).
Blockage in flue.
- Clean the flue pipes.
Burner air intake dirty.
- Clean the burner air intake.
The boiler gets dirty very
quickly .
Heat exchanger dirty.
- Clean the combustion chamber.
Insufficient air/fuel flow to burner.
- Check and adjust the burner.
Boiler control setpoint incorrect.
- Check the correct setting.
The boiler does not reach its
temperature setpoint .
Boiler control setpoint incorrect.
- Check the temperature setting.
- Check the electrical wiring.
- Check the positioning of sensors.
No water supply.
- Check the vent valve.
- Check the circuit pressure.
The boiler enters temperature
safety lockout .
Fumes escaping into the air.
- Check that the boiler 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 .
Air in the circuit.
- Bleed the circuit.
Pump malfunctioning.
- Check/unseize the pump.
- Change the pump.
The boiler reaches the set
temperature but the radiators
are still cold .
