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Fault
Lifting of flames or
Blowing Flames
Extinction Pop or
Flashback during
extinction
Fluctuating flames
Floating flames
Flame roll-out.
Piezo igniter won't
ignite
Possible Cause
Too much primary air.
Wrong size of injector orifice
installed.
Too much primary air.
Gas pressure is too low.
Wrong injector orifice size
installed.
Faulty or clogged burner.
Unsteady gas pressure due
to faulty gas pressure
regulator or gas meter.
Injector's orifice is clogged or
blocked by dust or dirt.
The burners are directly
under the exhaust fans.
Poor venting. Flue-ways are
blocked by soot or dust.
Burners are clogged or
blocked.
Operated from cold start.
Warm up stage.
Poor venting. Flue-ways are
blocked by soot or dust.
Burners are clogged or
blocked.
Faulty igniter wire.
Faulty piezo igniter.
Adjust the air shutter to eliminate lifting of
flames.
Check the orifice size of the injector installed.
Replace injector if necessary.
Adjust the air shutter of the burner to minimize
primary air input.
Adjust the gas supply pressure to required
standard.
Check the orifice size of the injector installed.
Replace it if necessary.
Clean the burner or replace it if necessary.
Replace the gas regulator or gas meter.
Clean the injector's orifice or replace it as
necessary.
Check and ensure that the burners are not
directly under the exhaust fans. Relocate the
unit if necessary.
Check and clean the flue-ways.
Clean the burners or replace them as
necessary.
Allow the appliance to heat up.
Check and clean the flue-ways.
Clean the burners or replace them as
necessary.
Replace the Pilot Assembly/Flame Device
System (FDS).
Replace the piezo igniter.
The piezo igniter is a consumable and is not
covered under warranty.
29
Remedy
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