Glow-worm 56/3e Back Boiler - Manual (Page 26)

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9 Fault Finding
Diagram 9.2 FUNCTIONAL FLOW
7186
br BROWN
b
BLUE
w WHITE
KEY
bk BLACK
or ORANGE
5 WAY SOCKET CONNECTIONS
PCB CONNECTIONS
SPARK
ELECTRODE
HV
CN4
CN3 EV2
TH
FUSE
TYPE
T1A
br
b
N
Ls
bk
w
w
CONTROL
THERMOSTAT
PILOT
SOLENOID
LINK (OVERHEAT THERMOSTAT
IF FITTED)
MAIN
SOLENOID
br
b
b
or
TH
CN3 EV1
CONTROL BOARD (PCB)
CN5
N