25
2000225116B
MAINS SUPPLY
230V~50Hz
FAN
P.C.B
(CONTROL BOARD)
GAS
CONTROL
VALVE
SENSING
ELECTRODE
IGNITION
ELECTRODE
BLOCK
CONNECTOR
THERMISTOR
AIR
PRESSURE
SWITCH
3.15A
FUSE
BURNER LIT
INDICATOR
RESET
INDICATOR
JUMPER
POSITION
p
bk
bk
w
bk
bk
b
r
g
bk
b
L
S
= LIVE (Switched)
N
L
S
N
g/y
g/y
g/y
br
b
b
br
BROWN
b
BLUE
g/y
GREEN/YELLOW
g
GREY
KEY
g/y
= NEUTRAL
= EARTH MAIN
KEY TO TERMINAL BLOCK
bk
br
br
b
bk
BLACK
p
PURPLE
r
RED
w
WHITE
A B
b
r
p
g
9 Fault Finding
Diagram 9.4
BOILER PILOT FAULT FINDING
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