Technical data

52
Can a pilot flame
be seen?
Is there a gas supply
to the appliance?
Turn on the gas supply,
bleed the system and
check the pressure
Is the pilot injector free
from blockage?
Replace the
injector
Replace the
gas valve
Has the sparking
stopped?
Is there 230V at
pin ML of
terminal CN4?
(Brown wire)
Does the burner instantly
operate at or near
maximum gas pressure?
Is there 230V at pin
1 of
terminal X4?
(Brown wire)
Replace the gas valve.
If the problem is not solved, replace cable
to gas valve centre solenoid
Replace the
control board
Check the gas supply to the appliance.
Check for blockages to the burner or
replace the gas valve
Rectify
incorrect
wiring
Replace the
Ignition board.
If problem
persists, check
earth
connections
Live and Neutral
supply could be
reversed.
Check connections
to both boards
and electrical spur.
Is it correct?
Check condition of
spark electrode and
lead.
Is it poor?
Replace as
necessary
Replace the
Ignition Board
Does the main
burner ignite?
NO
NO NO
NO
NONO
NO
NO
NO
NO
POINT
G
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
FAILURE AT POINT D
FAILURE AT POINT E
FAILURE AT POINT F