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IGNITION FUNCTIONAL CHECK 2
Remove the ignition lead
from the piezo. Operate
the valve. Does a spark
jump from the piezo to the
valve body?
Replace the ignition
lead and retry.
Yes
NO SPARK
Ensure there is no debris around the pilot assembly,
(e.g. coal, soot etc.) which could short the spark, clear the area.
Consult the users
instructions, retry.
Operate the valve to
light the pilot, does the
valve ‘click’?
From Ignition Fault
Finding Chart Part 1.
Is the pilot burner
horizontal? See Diagram 1
on page 24.
Has ignition lead
become detached or is
connection poor?
Remove the ignition lead from
electrode with insulated pliers.
Hold the tip 4mm from the pilot
pipework, is there a spark when
the valve ‘clicks’?
Is the ignition lead
detached from the piezo in
the valve?
Replace the combined
lead, retry.
Correct and retry.
Check the defective or damaged
control knob spindle or cam
operation. Check for correct
location of piezo components.
Correct and retry.
Is the valve being
operated properly?
Reset the electrode
gap, retry.
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
No
No
Replace the pilot unit.
FLAME FAILURE FUNCTIONAL CHECK 3
PILOT WILL NOT STAY LIT OR FIRE GOES OUT IN USE
Ensure there is no debris around the pilot assembly, (e.g. coal, soot etc.)
which could short the spark, clear the area.
Problem is with the
pipework or fittings
which lead to the
appliance.
Correct and retry.
Is thermocouple
connection good in
back of valve?
Replace the
thermocouple.
Will pilot stay
alight?
Change mag
unit.
Is the pilot flame of
the correct length?
See Diagram 1 on
page 24.
Change the
pilot unit.
Will the pilot
stay lit?
With the pilot
running, is the gas
pressure stated on
the databadge?
With the appliance
running on full, is the
gas at the pressure
stated on the
databadge?
Run for no more
than 60 seconds,
turn off, time interval
until mag unit shuts
with a click. Is this
greater than 7
seconds?
Run for 60 seconds,
turn off, time interval
until mag unit shuts
with a click. Is this
greater than 7
seconds?
Tighten the
connection and retry.
No
No
No
No
No
No
Yes
SYSTEM OK
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Light the pilot and keep the control knob pushed in at least
10 seconds before letting go.
Yes
Fault Finding Charts
Servicing Instructions
25


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