Desa 103426-01 Owner's Operation And Installation Manual page 19

SPLIT OAK AND AMERICAN OAK DESIGN
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
One or both burners do not light after ODS/
pilot is lit
Delayed ignition of one or both burners
Burner backfiring during combustion
Yellow flame in front burner during burner
combustion
Slight smoke or odor during initial opera-
tion
Heater produces a whistling noise when
burners are lit
Moisture/condensation noticed on windows
103426
18", 24" AND 30" MODELS
POSSIBLE CAUSE
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
4. Burner orifice(s) diameter is too small
1. Manifold pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
1. Residues from manufacturing processes
and logs curing
1. Turning control knob to HI position
when burners are cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner
orifice(s)
1. Not enough combustion/ventilation air
19
REMEDY
1. Contact local natural gas company
2. Clean burner(s) (see Cleaning and Main-
tenance, page 17) or replace burner
orifice(s)
3. Contact qualified service person
4. Replace burner orifice(s)
1. Contact local natural gas company
2. Clean burner(s) (see Cleaning and Main-
tenance, page 17) or replace burner
orifice(s)
3. Contact qualified service person
1. Clean burner (see Cleaning and Main-
tenance, page 17) or replace burner ori-
fice
2. Replace damaged burner
3. Replace gas regulator
1. Check burner(s) for dirt and debris. If
found, clean burner(s) (see Cleaning and
Maintenance, page 17)
2. Replace gas regulator
1. Problem will stop after a few hours of
operation
1. Turn control knob to LO position and
let warm up for a minute
2. Operate burners until air is removed
from line. Have gas line checked by lo-
cal natural gas company
3. Observe minimum installation clear-
ances (see pages 6-8)
4. Clean burners (see Cleaning and Main-
tenance, page 17) or replace burner
orifice(s)
1. Refer to Air for Combustion and Venti-
lation requirements (page 4)
Continued