Glow-worm Betacom C - Manual (Page 50)

50
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13 Fault finding
FUSE RATINGS:
F1: 2 A
F2: 2 A
5 4 3 2 1
br BROWN
b BLUE
g/y GREEN/YELLOW
gn GREEN
g GREY
bk BLACK
m MAUVE
w WHITE
r RED
KEY
IGNITION
ELECTRODES
FLAME
(IONISATION)
ELECTRODE
OVERHEAT SAFETY
THERMOSTAT
FUSES (2A)
AIR PRESSURE
SWITCH
GAS CONTROL
VALVE
DOMESTIC
HOT WATER
SENSOR
CENTRAL HEATING NTC
SENSOR
THREE WAY
VALVE
PUMP
FAN
PRINTED
CIRCUIT
BOARD
L E N
230V~50Hz PERMANENT
MAINS SUPPLY
FUSED AT 3A
24V ROOM
THERMOSTAT
CONNECTION
(low voltage)
24V TIME
CLOCK
(low voltage)
230V ROOM
THERMOSTAT
CONNECTION
(high voltage)
USER
INTERFACE
WATER
PRESSURE
SWITCH
WATER
FLOW
SENSOR
r
r
r w g
r
r
F1 F2
CHASSIS
EARTH
br
br
br
br
b
b
b
b
g/y
g/y
g/y
g/y
g/y
g/y
g/y
g g
bk
m
w
w
w
w
w
g
w w
w
w
w
w w
w w
w w
r
r r
r
r
r
r
r
r
r r
r r
LIMIT
THERMOSTAT
HALL
EFFECT SENSOR