Comfort Glow CGD3924N Owner's Operation And Installation Manual page 27

TROUBLE-
SHOOTING
Continued
103603
OBSERVED POSSIBLE
PROBLEM CAUSE
Burner does light 1. Burner orifice clogged
after ODS/pilot is lit
2. Inlet gas pressure is
3. Burner orifice diameter
Delayed ignition 1. Manifold pressure is
burner
2. Burner orifice clogged
Burner backfiring 1. Burner orifice is
during combustion
2. Damaged burner
3. Gas regulator defective
Slight smoke or 1. Not enough air
odor during initial
operation
2. Gas regulator defective
3. Residues from manu-
Moisture/condensa- 1. Not enough combus-
tion noticed on
windows
Heater produces a 1. Turning control knob
whistling noise
when burner is lit
2. Air in gas line
3. Air passageways on
4. Dirty or partially
too low
is too small
too low
clogged or damaged
facturing processes
and logs curing
tion/ventilation air
to HI position when
burner is cold
heater blocked
clogged burner orifice
REMEDY
1. Clean burner (see
Cleaning and Mainte-
nance, page 25) or
replace burner orifice
2. Contact local natural gas
company
3. Replace burner orifice
1. Contact local natural gas
company
2. Clean burner (see
Cleaning and Mainte-
nance, page 25) or
replace burner orifice
1. Clean burner (see
Cleaning and Mainte-
nance, page 25) or
replace burner orifice
2. Replace damaged burner
3. Replace gas regulator
1. Check burner for dirt
and debris. If found,
clean burner (see
Cleaning and Mainte-
nance, page 25)
2. Replace gas regulator
3. Problem will stop after a
few hours of operation
1. Refer to Air for Com-
bustion and Ventilation
requirements (page 5)
1. Turn control knob to LO
position and let warm up
for a minute
2. Operate burner until air
is removed from line.
Have gas line checked
by local natural gas
company
3. Observe minimum
installation clearances
(see pages 9-12)
4. Clean burner (see
Cleaning and Maintenance,
page 25) or replace
burner orifice
Continued
27