Intergas Heating Ltd
42
No
No spark. Ignition unit on gas valve faulty.
Check the cabling. Check the spark plug cap. Replace the ignition unit.
No
Gas/air adjustment not correctly set.
Check adjustment. See gas/air adjustment.
No
Fan faulty.
Check the wiring. Check the fuse , if necessary, replace the fan.
No
Fan dirty.
Clean the fan.
No
Gas valve faulty.
Replace the gas valve. Re-adjust the gas valve, see gas/air adjustment
10.12.2
Burner ignites noisily
Possible causes:
Solution:
Gas supply pressure too high.
The house pressure switch may be faulty. Contact the gas company.
No
Incorrect ignition gap.
Replace the ignition pin.
Check the ignition electrode gap.
No
Gas/air adjustment not correctly set.
Check the setting. See gas/air adjustment.
No
Weak spark.
Check the ignition gap.
Replace the ignition electrode.
Replace the ignition unit on the gas valve.
10.12.3
Burner resonating
Possible causes:
Solution:
Gas supply pressure too low.
The house pressure switch may be faulty. Contact the gas company.
No
Recirculation of combustion gasses.
Check the gas flue an the air supply.
No
Gas/air adjustment not correctly set.
Check the setting, see gas/air adjustment.
10.12.4
No heating (CH)
Possible causes:
Solution:
Room thermostat / weather-dependent
adjustment not closed or faulty.
Check the wiring.
Replace the thermostat.
Replace the weather-dependant adjustment.
No
No current (24 V).
Check the wiring against the diagram.
Check the connector X4.
Replace the faulty manager.
No
Pump not running.
Check the power supply.
Check connector X2.
Replace faulty pump.
Pin must touch test tool
Pin must not touch test tool
Checking ignition pin position using test tool
