24
2000225116B
FUSE
TYPE F3.15A
AIR PRESSURE
SWITCH CONNECTIONS
FAN
EV1
EV2
IGNITION
ELECTRODE
AIR
PRESSURE
SWITCH
SL
(N/O) (C)
SENSING
ELECTRODE
br
br
bk
p
r
gy
br
bk
bk
KEY
bk BLACK
br BROWN
b BLUE
p
PURLPLE
r RED
gy GREY
w
WHITE
MAIN TERMINAL
STRIP CONNECTIONS
PRINTED CIRCUIT
BOARD CONNECTIONS
b
w
b
b
N
b
N
MAINS SUPPLY
230v ~ 50Hz
9.1 Electrical
Gain access to the control box, refer to the relevant paragraph
in section 8.1, then remove the control box cover, refer to
section 5.1.
Refer to: Boiler Fault Finding, see diagram 9.1, Fault Finding
Wiring Diagram, see diagram 9.3, Pictorial Wiring Diagram, see
diagram 9.4.
9.2 Electrical Supply Failure
Failure of the electrical supply will cause the burner to go out.
Operation will normally resume on the restoration of the electrical
supply.
If the burner does not relight after an electrical supply failure and
the red neon on the control panel is lit, turn the burner temperature
control to “0”, wait 30 seconds, then fully clockwise to “Max.”
see diagram 9.2.
Diagram 9.3
11827
9 Fault Finding
Diagram 9.2
BOILER TEMPERATURE
CONTROL
10169
9.3 LED Fault Coding
Refer to fault coding table below.
LED 1 LED 2
LED STATUS
CONDITION
REMARK
(RESET) (BURNER LIT)
Alternating
Simultaneous
Simultaneous
Simultaneous
Ignition Lockout
Software Error
Software Sequence Error
Lighting Sequence-Fan/APS
Lighting Sequence-Thermistor
Reversed Polarity
Other Errors
PCB Failure
Burner Lit
Non - Volatile Lockout
Reset O/H or in
'standby' mode
Correct operation
Transpose Live & Neutral
Check Earth
Check connection
& value
Check connection
& operation
Fast Flashing (8Hz)
Slow Flashing (2Hz)
