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7. FAULT FINDING - Page 19
SYMPTON
PILOT WILL NOT LIGHT
PILOT LIGHTS BUT WILL NOT
REMAIN ALIGHT
POSSIBLE CAUSE
1.
Gas not turned on.
2.
Air in gas line.
3.
Incorrect pilot lighting procedure.
4.
Electrode lead not connected to
the rear of the spark igniter.
5.
Incorrect spark gap.
6.
Current tracking to earth.
7.
Pilot injector blocked.
8.
Faulty components.
9.
No gas to the appliance.
1.
Thermocouple connections loose.
2.
Pilot flame 'soft' or too small to
heat the thermocouple tip.
3.
Thermocouple worn out or
damaged.
4.
Faulty magnet unit in the flame
safety device.
5.
Energy cut-off device connections
loose.
6.
Energy cut-off device may be
faulty.
SOLUTION
1.
Turn on the gas at the gas service
cock and/or the main gas line.
2.
Purge the air line by depressing
and holding the centre ON button,
this may take 2-3 minutes.
3.
Follow the lighting instructions
located on the bottom cover or
refer to the "Instructions for Use".
4.
Re-connect the electrode lead.
5.
The gap between the electrode tip
and the pilot hood should be 3-
4mm.
6.
Check the electrode lead is routed
clear of all metal parts.
7.
Clear injector by blowing through
or replace with pilot injector Part
No 19/12690. Also clean the lint
filter located at the base of pilot
tube.
8.
Replace any faulty components
found. Piezo Unit - Part No
10/11935. Electrode Assembly -
Part No 10/17493.
9.
Call in your local British Gas
Region.
1.
Tighten the connections.
2.
Pilot injector partially blocked,
clear by blowing through or
replace. Check the gas inlet
pressure is correct - 20 mbar. Also
clean the lint filter located at the
base of the pilot tube.
3.
Replace the thermocouple - Part
No 10/17461.
4.
Replace flame safety device- Part
No 10/13477.
5.
Tighten connections.
6.
Check for continuity and replace if
necessary - Part No 10/17792.
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