Potterton Performa SL HE Installation & Service Instructions Manual page 36

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