23
FLAME FAILURE FUNCTIONAL CHECK
NO
Problem is with the pipework
or fittings which lead to the fire.
NO
Replace the ODS unit.
NO
Tighten the connection
and retry.
NO
Change mag unit.
YES
SYSTEM OK
YES
Run for 3 mins, turn off, time interval
until mag unit shuts with a click
Is this greater than 7 seconds?
Will pilot stay alight.
YES
Replace ODS unit.
Is thermocouple connection
good in back of valve?
YES
Is the pilot flame
of the correct length?
The flame should be approx 25mm.
NO
With the pilot running is
the gas pressure as
stated on the data badge?
NO
Problem is with the pipework
or fittings which lead to the fire.
YES
Run for 3 mins, turn off, time interval
until mag unit shuts with a click.
Is this greater than 7 seconds?
YES
With the fire running on
Full is the gas pressure as
stated on the data badge?
Will the pilot stay alight?
Light the pilot and keep the control knob pushed in
for 10 - 20 seconds before letting go.
Ensure there is no debris around the pilot
assembly, e.g. coal, soot, etc.
Check for fluff in the pilot aeration hole.
See figure 19.
PILOT WILL NOT STAY LIT OR FIRE GOES OUT
If the appliance goes out in use continually, this may mean that the oxygen
depletion sensor (ODS) has been activated. The appliance should not be
used until the cause has been found and rectified.
VI-06-09
