Glow-worm SwiftFlow 120 Servicing Instructions page 11

MAIN MULTIFUNCTIONAL CONTROL SOLENOID
DHW CUT OFF
CONTROL
WATER PRESSURE
w
w
THERMISTOR
USER
CONTROL
THERMISTOR
BOARD
AIR PRESSURE
SWITCH
FAN DRIVER
P.C.B.
2 2 2 2 2
p g y b gry w r
D.C.
FAN
Diagram 3.7
Supplied By www.heating spares.co Tel. 0161 620 6677
3 F a u l t F i n d i n g
r
C
N/C
N/O
TRANS-
FORMER
SWITCH
(SHOWN IN
PRESSURISED
TO REMOTE
STATE)
HEATING
CONTROL
DHW
SELECTOR
FLOW
SWITCH
SWITCH
CH
DHW
gry
p
y
or
N/C
C
N/O
1
1
1
2 2 2
1
Screen
KEY
br
bk
b
g
gry
or
p
r
v
w
y
p
p
bk
y
L N
240V~
26V~
p
p
5 WAY PLUG/SOCKET
r
r
br
br
or
or
p
p
v
r
gry
gry
p
or
y
MAIN PCB
- Brown
CN 1
1
- Black
- Blue
CN 4
4
- Green
- Grey
CN 5
5
- Orange
CN 6
6
- Purple
- Red
CN 7
7
- Violet
- White
- Yellow
11
1
1
1
1
bk
1
r
1
4
4
4
4
4
4
4
4
4
4
5
5
5
5
6
6
6
7
7
7
7
CONTROL
BOARD
FAN DRIVER PCB
1 CN 1
CN 2
2
221045A