28
221895A
13.2 Clock/Timer
If the clock has failed it can be bypassed by disconnecting the
plug and reconnecting the link, see diagram 13.1.
Gain access by removing the two screws securing the controls
facia, see diagram 9.1.
Hinge the control facia forward.
Remove the clock timer cover, see diagram 10.2.
Disconnect the clock wiring harness plug and connect the link.
This is a temporary measure and the clock should be repaired
or replaced as soon as possible.
13 Fault Finding
Diagram 13.1
7025
CLOCK/TIMER
PLUG
LINK
CLOCK/TIMER
7467
Diagram 13.2
MAINS FUNCTIONAL FLOW
7670
grey
orange
PCB
purple
white
black
X5
X5
X4
X4
X4
X4
X4
X3
X3
X5
DHW
FLOW
SWITCH
purple
purple
orange
orange
X5
CH THERMISTOR
DHW THERMISTOR
CONTROL BOARD
N/C
N/O
C
grey
black
white
WATER
PRESSURE
SWITCH
1
2
CLOCK
TIMER PLUG
EXTERNAL
CONTROLS
F1 T2A
yellow
black
brown
blue
red
brown
brown
brown
black
N
OVERHEAT
CUTOFF
PRESSURE
DIFFERENTIAL
CONTROL BOARD
GAS
VALVE
CLOCK
TIMER PLUG
WATER
DIVERTER
VALVE
ON/OFF
SWITCH
TERMINAL
BLOCK
SPARK
ELECTRODES
PERMANENT
MAINS 230V-50HZ
FAN
PUMP
X3
X3
X3
X3
X2
white
X2
brown
X11
black
X11
blue
X11
X1
X1
X1
X1
X2
X2
X2
X2
L
grey
grey
AIR
PRESSURE
SWITCH
red
black
blue
blue
X3
X3
yellow
yellow
white
LOW VOLTAGE FUNCTIONAL FLOW