23
Fault Finding
Fault Finding the Gas System
Fault
Possible Cause
Remedy
Pilot Burners will not light.
Gas supply is turned
Off
.
Turn
On
gas supply.
Gas bottles empty.
Replace gas bottles.
Blocked pilot burner.
Call for service.
Faulty piezo ignition.
Call for service.
NOTE: Pilot can be manually lit
until repair is carried out.
Pilot Burner lights then goes
out when Gas Control Button
is released.
Gas valve control button not held
In
for long enough.
Hold
In
for at least
10 seconds
after
ignition of the pilot.
Blocked / weak pilot.
Call for service.
Low gas pressure.
Call for service.
Faulty thermocouple.
Call for service.
Faulty overtemp.
Call for service.
Faulty gas control valve.
Call for service.
Pilot Burner goes Out during
operation.
Low / fluctuating gas pressure.
Call for service.
Weak pilot.
Call for service.
Faulty thermocouple.
Call for service.
Faulty overtemp.
Call for service.
Faulty gas control valve.
Call for service.
Overtemp tripped, pilot is turned
Off
if
temperature exceeds 220°C.
Call for service.
Main Burners do not light.
Low gas pressure.
Call for service.
Blocked pilot.
Call for service.
Faulty thermostat.
Call for service.
Faulty gas control valve.
Call for service.
Main Burners do not burn
correctly.
(Burners roar or
flash back to Main Injector).
Faulty burner.
Call for service.
Blockage in flue.
Call for service.
Summary of Contents for FN8120GE
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