E
L
EC
T
R
IC
A
L
SC
H
E
M
A
T
IC
IN
S
TA
L
L
A
T
ION
&
SE
R
V
ICI
N
G
I
N
S
T
R
U
C
T
IONS
F
O
R
W
O
RCE
S
T
E
R
G
R
E
E
N
S
TA
R
H
E
A
T
SL
A
V
E
12/18-18/25-25/32
6 7
20 8
02 432 issue A 04/2012
49
FAULT FINDING
& DIAGRAMS
E
L
EC
T
R
IC
A
L
SC
H
E
M
A
T
IC
N
C1
POWER ON
INDICATOR
LIVE SUPPLY
L
X9 (PIN 2)
N
X1 (PIN 1)
FROST THERMOSTATS (if fitted)
PROGRAMMER
FUSE F1
3.15A
FAST
CERAMIC
X2
(FS)
X2 (FR)
X2 (FR)
X4 (PIN 3)
X4 (PIN 1)
white
brown
grey
X4 (PIN 2)
X2
(LS)
X2
(NS)
N
LINK
(REMOVE)
4
1
2
3
X2
(LR)
N
RELAY 1
ROOM
THERMOSTAT
DIVERTER
END SWITCH
X8 (PIN 5)
orange
X8 (PIN 2)
grey
1
4
3
N RELAY 2
4
3
1
N
RELAY
3
X10 (PIN 3)
X10 (PIN 1)
white
white
1
2
4
N
RELAY4
X6 (PIN 2)
X6 (PIN 4)
blue
brown
DHW CONTROL
THERMOSTAT
WATER FLOW
SWITCH
LOCKOUT
INDICATOR
X11 (PIN 2)
PUMP
X7 (PIN 1)
brown
MOTORISED
DIVERTER
VALVE
R1
X8 (PIN 3)
brown
grey
X12 (PIN 4)
grey
BURNER
X13 (PIN 1)
yellow
pink
X13 (PIN 3)
X13 (PIN 2)
orange
2
4
(C)
2
4
(C)
grey
X13 (PIN 5)
red
red
PLUG IN
CONNECTOR
CENTRAL HEATING
CONTROL THERMOSTAT
AUTO RESET HIGH LIMIT
THERMOSTAT
MANUAL RESET FLUE
OVERHEAT THERMOSTAT
X3 (PIN 3)
X8 (PIN 1)
LIVE SUPPLY FOR ALTERNATIVE DIVERTER VALVE
CH
DHW
3
2
MANUAL RESET BOILER
OVERHEAT THERMOSTAT
red
NC
NO
3
NC
orange
NO
3
red
2
6
LOCKOUT
RESET SWITCH
X3 (PIN 3 (L))
white
white
X9 (PIN 1)
NEUTRAL
SUPPLY
X1 (PIN 3)
EARTH
X1 (PIN 4)
(PIN 5)
(PIN 6)
N
4
X11 (PIN 3)
X12 (PIN 3)
X7 (PIN 3)
brown
N
X7 (PIN 4)
N
X8 (PIN 4)
X8 (PIN 6)
R2 C2
MANUAL RESET
TANK OVERHEAT
THERMOSTAT
brown
X14 (PIN 1)
X14 (PIN 2)
DHW
PIPE STAT
