15.0 Fault Finding
51
© Baxi Heating UK Limited 2005
Connect Mains to boiler.
240V at B ?
Check wiring from
terminal block to PCB.
Check for shorts on
pump, fan & gas valve.
Replace if shorted &
replace fuse.
YES
NO
Replace PCB.
YES
YES
NO
NO
ELECTRICAL SUPPLY
240V at A ?
PCB fuse OK ?
B
Fuse
A
Off
Off
Off
Off
