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TROUBLE-
SHOOTING
Continued
24
OBSERVED
POSSIBLE
PROBLEM
CAUSE
Burner(s) does not
1. Burner orifice(s) is
light after ODS/pilot
is lit
2. Burner orifice(s)
3. Inlet gas pressure is
Delayed ignition of
1. Manifold pressure is
burner(s)
2. Burner orifice(s) is
Burner backfiring
1. Burner orifice(s) is
during combustion
2. Burner damaged
3. Gas regulator defective
Burner plaque(s) does
1. Plaque damaged
not glow
2. Inlet gas pressure is
3. Control knob set
Slight smoke or odor
1. Residues from manu-
during initial opera-
tion
Heater produces a
1. Metal expanding while
clicking/ticking noise
just after burner is lit
or shut off
clogged
diameter is too small
too low
too low
clogged
clogged or damaged
too low
between locked
positions
facturing processes
heating or contracting
while cooling
REMEDY
1. Clean burner orifice(s)
(see Cleaning and Main-
tenance, page 22) or re-
place 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 Main-
tenance, page 22) or re-
place burner orifice(s)
1. Clean burner orifice(s)
(see Cleaning and Main-
tenance, page 22) or re-
place 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 quali-
fied service person
099434
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