Baxi Combi 130 HE Installation And Servicing Instructions page 47

Ignition Lockout
15.0 Fault Finding
NO
Incorrect gas supply to
Is 19-20 mbar dynamic at
boiler.
Replace Main PCB.
gas valve inlet ?
YES YES
YES
YES
Is Is
NO
Is there gas but no spark? Is spark probe
spark gap between 3 and wiring from Main PCB to
damaged ? 4mm ? spark probe OK ?
NO
YES NO
Set spark gap to
Replace spark probe.
Rectify wiring.
3.5mm.
NO
YES
Is
Go to Gas Valve Fault
there spark
section of the fault
finding instructions.
but no gas ?
NO
YES
Are
the sensing tubes
Unblock sensing tubes.
blocked ?
NO
Is
YES
NO wiring from
Is
the detection probe Main PCB to detection Replace Main PCB.
damaged ? probe OK ?
YES NO
Replace detection
Rectify wiring.
probe.
47
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