User's Manual
24
SERVICING INSTRUCTIONS
FAULT FINDING CHARTS
IGNITION FUNCTIONAL CHECK 2
NO SPARK
Ensure there is no debris around the pilot assembly,
(e.g. coal, 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 gap between
electrode and thermocouple
as in diagram 13 in
replacing parts section?
Has ignition lead
become detached or is
connection poor?
Remove the electrode lead
from electrode with insulated
pliers. Hold the tip 3.5mm from the
pilot pipework, is there a spark
when the valve ‘clicks’?
Is the electrode wire
detachable 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.
Remove the electrode lead from
the piezo. Operate the valve.
Does a spark jump from the
piezo to the valve body?
Is the valve being
operated correctly?
Reset the electrode gap, retry.
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
No
No
Replace the ODS unit.
Replace the piezon
and retry
Replace the electrode
lead and retry.
Yes
No
IGNITION FUNCTIONAL CHECK 1
PILOT WILL NOT LIGHT
Ensure there is no debris around the pilot assembly, (e.g. soot, etc.)
which could short the spark, clean the area. Check for fluff in the
pilot aeration hole. See diagram 13, arrow A in replacing parts section
Operate the valve.
Is there a spark?
Consult User
Instructions and retry.
Ensure gap between
electrode and thermocouple
is as diagram 13 in replacing
parts section and retry. If the
gap is OK then first change
the ignition lead and retry, if
still no good then change the
piezo
Check isolation tap and
gas meter, retry.
Correct and
retry.
Purge the gas pipes and retry.
SEE NO SPARK CHART
SYSTEM OK
There is a blockage in the system, check the inlet test point,
the mag seating valve and gas filter.
Is the gas turned on to the
appliance?
Is the gas pressure correct?
Has the system got
any air in it?
Does the pilot light?
Is the control being
operated correctly?
Will the pilot light
with a match?
No Yes
No
Yes
No
Yes
Yes
No
No
Yes
No
No
Yes
Yes
No