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Gazco Loft Conventional Flue Manual

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34
FLAME FAILURE FUNCTIONAL CHECK 3
IGNITION FUNCTIONAL CHECK 2
Remove the electrode lead
from the piezo. Operate the
valve. Does a spark jump from
the piezo to the valve body?
Replace the piezo
and gas valve and retry.
Yes No
PILOT WILL NOT STAY LIT OR FIRE GOES OUT IN USE
Ensure there is no debris around the pilot assembly,
(e.g. soot etc.) Check for uff in the pilot aeration hole.
See the Diagram in the Replacing Parts section.
Problem is with the
pipe work or
ttings which lead
to the appliance.
Correct
and retry.
Is thermocouple
connection good
in back of valve?
Replace
thermocouple.
Will pilot
stay alight?
Change mag
unit.
Is the pilot ame of
the correct length?
See Servicing
Requirements.
Change the
pilot unit.
Will pilot
stay alight?
With the pilot
running is the
gas pressure as
stated on the data
badge?
With the appliance
running on full is
the gas at
the pressure stated
on the data badge?
Run for no more
than 60 seconds
turn off, time inter-
val until mag unit
shuts with a click.
Is this greater than
7 seconds?
Run for a maximum of
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 releasing.
NO SPARK
Ensure there is no debris around the pilot assembly,
(e.g. soot etc.) which could short the spark, clean the area.
Consult the users
instructions, retry.
Operate the valve to light
the pilot, does the valve
'click'?
Is the pilot burner
horizontal?
see Diagram page 33
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 electrode wire
detached from the piezo
in the valve?
Replace the combined
lead and piezo, retry.
Correct and retry.
Check for defective or
damaged control knob spindle
or cam operation. Check for
correct location of piezo
components. Correct and retry.
Is the control system being
operated correctly?
Reset the pilot burner.
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
No
No
Replace the electrode. Replace the electrode
lead and retry.
Is the ue working?
Rectify ue
No
Yes
Yes
FAULT FINDING CHARTS
… 34 …


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