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Mersey Super - Installation & Service Instructions
PILOT LIGHTS BUT
WILL NOT REMAIN
ALIGHT
Page 18
FAULT FINDING - Page 19
SYMPTON
PILOT LIT BUT MAIN
BURNER WILL NOT
LIGHT ON WATER
FLOW
file://P:\System\DATA\Dx\DS1\installation\2551\I24-2551\I24-2551.htm
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.
POSSIBLE CAUSE
1. Gas inlet pressure low.
2. Low water flow caused by
blocked water filter.
3. Faulty diaphragm. Will also
cause a high water rate
Page 30 of 35
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.
SOLUTION
1. Call in your local British
Gas Region
2. Clean the debris from the
filter.
3. Replace the Diaphragm
Assembly - Part No
09/12/2009
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