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14 fault finding – Glow-worm Ultracom sxi User Manual

Page 46

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46

14 Fault Finding

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Diagram 14.4

br

b

g/y

br

b

g/y

GAS

CONTROL

VALVE

HEATING

FLOW

THERMISTOR

HEATING

RETURN

THERMISTOR

FAN

PUMP

CHASSIS

EARTH

IGNITION

ELECTRODE

WATER

PRESSURE

SENSOR

IGNITER

UNIT

MAIN CONTROL

BOARD

APPLIANCE

INTERFACE

BOARD

bk

r

bk

b

w

gy

b

y

w

r

g/y

g/y

br

b

g/y

w

bk

b

r

bk

b

r

bk

r

br

BROWN

b

BLUE

g/y

GREEN/YELLOW

gy

GREY

bk

BLACK

y

YELLOW

p

PURPLE

or

ORANGE

w

WHITE

r

RED

KEY

w

or

p

bk