Quick Start Manual

15.0 Fault Finding
58
© Baxi Heating UK Limited 2005
Wiring in 8-way terminal
block
from L to Prog 1 faulty.
Is there 240V at D ?
NO
YES
CH Fault
Check integral timer and
wiring. Check Link Plug if
no timer fitted.
Is there 240V at E ?
NO
Check external controls
wiring.
Is there 240V at F ?
NO
Check room stat & room
stat wiring OK.
Is there 240V at G ?
NO
Wiring from R/S 2 to PCB
faulty.
Is there 240V at H ?
NO
Diverter Valve faulty.
Unplug
Diverter Valve.
Ensure all DHW taps are
off so that DHW LED is off. Is
there 240V from I to J &
from K to J ?
NO
Wiring from PCB to
Diverter Valve faulty.
Is there
240V from G to N & from G
to M ?
PCB faulty.
YES
YES
YES
YES
YES
NO
I
J
K
Diverter Valve Plug
(when unplugged)
G
N
M
H
D
E F
YES
Link Plug