© Baxi Heating UK Ltd 2008
36
Lockout Burner Mains
Electrical
S
upply Fault
Refer to the boiler wiring diagram
Yes
Is there 230V
at boiler terminal block
(Mains L and N) ?
No Permanent Live to boiler
Check systems controls
and system wiring
Is
terminal block
fuse OK ?
Check for shorts on pump,
fan and gas valve
Replace if shorted
and replace fuse
No
No
This boiler requires both a
permanent live and a switched live.
Both need to be a
minimum of 190V to function
Yes
Check wiring from
terminal block to PCB
No
Replace PCB
Yes
Is there 230V
at 6 way plug to PCB
(Mains L and N) ?
off
off
off
Fig. 44