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100750
OBSERVED
PROBLEM
Burner(s) does not
light after ODS/pilot is
lit.
Delayed ignition of
burner(s)
Burner backfiring
during combustion.
Burner plaque(s) does
not glow.
Slight smoke or odor
during initial opera-
tion
Heater produces a
clicking/ticking noise
just after burner is lit or
shut off.
REMEDY
1. Clean burner orifice(s)
(see Cleaning and
Maintenance, page 26) or
replace burner orifice(s).
2. Replace burner orifice(s).
3. Contact local natural gas
company.
1. Contact local natural gas
company.
2. Clean burner orifice(s)
(see Cleaning and
Maintenance, page 26) or
replace burner orifice(s).
1. Clean burner orifice(s)
(see Cleaning and
Maintenance, page 26) or
replace burner orifice(s).
2. Replace burner.
3. Replace gas regulator.
1. Replace burner.
2. Contact local natural gas
company.
3. Turn control knob until it
locks at desired setting.
1. Problem will stop after a
few hours of operation.
1. This is common with
most heaters. If noise is
excessive, contact
qualified service person.
POSSIBLE
CAUSE
1. Burner orifice(s) is
clogged.
2. Burner orifice(s)
diameter is too small.
3. Inlet gas pressure is too
low.
1. Manifold pressure is too
low.
2. Burner orifice(s) is
clogged.
1. Burner orifice(s) is
clogged or damaged.
2. Burner damaged.
3. Gas regulator defective.
1. Plaque damaged
2. Inlet gas pressure is too
low.
3. Control knob set be-
tween locked positions.
1. Residues from manu-
facturing processes.
1. Metal expanding while
heating or contracting
while cooling.
TROUBLE-
SHOOTING
Continued