Glow-worm Micron 40FF - 9 Fault Finding - Wiring Diagrams; Neon Indicators and Wiring Schematics

21
221899A
MAINS SUPPLY
230V~50Hz
= MAINS ON
= DEMAND ON
= FAN RUNNING
= BURNER LIT
= SAFETY
TEMPERATURE
LIMITER
= FLAME FAILURE
NEON 1 =
NEON 2 =
NEON 3 =
NEON 4 =
NEON 5 =
NEON 6 =
NEON KEY (see P.C.B)
FAN
SAFETY
TEMPERATURE
LIMITER
P.C.B (CONTROL BOARD)
GAS
CONTROL
VALVE
BLOCK CONNECTOR
THERMISTOR
ELECTRODE
AIR
PRESSURE
SWITCH
NEON 1 NEON 5
NEON 4
NEON 6
NEON 2
NEON 3
F4A FUSE
p
y
g
p
b
bl
bl
bl
b
bl
b
r
g
y
bl b
L
S = LIVE (Switched)
N
L
S N
br br
br
br
br
r
g/yg/y
g/y
g/y
br
b
b
br BROWN
b BLUE
g/y GREEN/YELLOW
g GREY
bl BLACK
p PURPLE
y YELLOW
rRED
KEY
g/y
= NEUTRAL
= EARTH MAIN
KEY TO TERMINAL BLOCK
9 Fault Finding
Diagram 9.4
7105