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29
100792
OBSERVED
PROBLEM
Delayed ignition of
burner.
Burner backfiring
during combustion.
Yellow flame during
burner combustion.
Flame lifting during
combustion.
Slight smoke or odor
during initial opera-
tion.
POSSIBLE
CAUSE
1. Manifold pressure is
too low.
2. Burner orifice is
clogged.
1. Burner orifice is
clogged or damaged.
2. Burner damaged.
3. Gas regulator defective.
4. Delayed ignition.
1. Not enough air.
2. Gas regulator defective.
1. Burner orifice clogged
or damaged.
2. Manifold pressure too
high/defective gas
regulator.
1. Residues from manu-
facturing processes.
TROUBLE-
SHOOTING
Continued
REMEDY
1. Contact local natural gas
company.
2. Clean burner
(see
Cleaning and Mainte-
nance, page 26)
or
replace burner orifice
(see Changing Burner
Orifice, page 34).
1. Clean burner (see
Cleaning and Mainte-
nance, page 26) or
replace burner orifice
(see Changing Burner
Orifice, page 34).
2. Replace burner.
3. Replace control valve.
4. See above.
1. Check burner for dirt
and debris. If found,
clean burner (see
Cleaning and Mainte-
nance, page 26).
2. Replace control valve.
1. Clean burner (see
Cleaning and Mainte-
nance, page 26) or
replace burner orifice
(see Changing Burner
Orifice, page 34).
2. Replace control valve
(see Removing Control
Valve and Burner Tube,
page 32).
1. Problem will stop after a
few hours of operation.
Continued