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7. FAULT FINDING – Page 18
SYMPTON
PILOT WILL NOT LIGHT
PILOT LIGHTS BUT WILL NOT
REMAIN ALIGHT
18
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 10/1 7493.
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 10/1 3477.
5. Tighten connections.
6. Check for continuity and replace if
necessary - Part No 10/17792.
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