39
SECTION 4 - FAULT FINDING
NO
NO
Replace Spark Generator.
If prolem persists
replace PCB.
Remove flame detection plug from spark generator. Is
there continuity between plug and PCB?
Replace harness
YES
YES
RESTART PROCEDURE
- To restart boiler, press and release the restart button.
Are the Boiler and CH System filled with water and radiator valves
open (check pressure gauge is between 1 to 1.5 bar)?
NO
NO
YES
Fill and vent the system and open all
isolation valves
YES
Are connections on water pressure sensor secure?
Re-fit connections
Replace water pressure switch
4.7 ALTERNATING ‘L’ AND ‘5’ - 5 RESETS WITHIN 15 MINS
4.8 ‘L6’ - FALSE FLAME LOCKOUT
4.9 ‘F1’ - LOW WATER PRESSURE
Turn power off and on
Restart the boiler. Does the boiler
work OK?
No further action required.