Trouble Shooting
Fault
Possible Cause
Remedy
Main burner will not light.
No gas supply or gas isolation
valve is OFF.
Ensure gas isolation valve is turned
on, and that gas tanks are not
empty.
Insufficient gas supply pressure. Adjust the gas supply pressure to
required standard.
NG – 1.0KPa and LPG – 2.75KPa.
Partially blocked injector.
Clean the injector or replace the
injector if necessary. Follow the
main burner injector removal
procedure.
Faulty safety gas valve.
Replace the safety gas valve.
Follow the safety gas valve removal
procedure.
Clogged or blocked gas
manifold.
Replace the gas manifold.
Main burner low flame setting
is too small or too low.
Safety gas valve low flame
setting is not adjusted to
desired flame height.
Adjust the low flame setting of the
safety gas valve to your desired
flame height.
Main burner flame color is
yellow or orange.
Insufficient air supply.
Adjust the main burner air supply
shutter to fully open.
Wrong type of gas used.
Check the name plate and
injector’s orifice # used and
compare with gas used on the unit.
Flame does not come out from
some of the holes of the main
burner.
Holes are clogged with carbon
or debris.
Clean the burner.
MAIN BURNER TROUBLE SHOOTING:
MAIN BURNER REMOVAL:
1. Turn-off the pilot.
2. Shut-off the main isolation valve and follow the lock-
out/tag-out procedure.
3. Remove the trivets.
4. Remove the burner lock pin.
5. Pull up the burner from the pin and slide out to
remove.
Remove burner lock pin
LOCK PIN
A) Pull up, then B) slide out.
21
a
b
