Desa PROPANE GAS LOG HEATER - Manual (Page 27)

27
102318
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
Moisture/condensation
noticed on windows
Heater produces a
whistling noise when
burners are lit
REMEDY
1. Clean burner(s) (see
Cleaning and Mainte-
nance, page 25) or
replace burner orifice(s)
2. Contact local propane
gas company
3. Contact qualified service
person
4. Replace burner orifice(s)
1. Contact local propane
gas company
2. Clean burner(s) (see
Cleaning and Mainte-
nance, page 25) or
replace burner orifice(s)
3. Contact qualified service
person
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(s) for dirt
and debris. If found,
clean burner(s) (see
Cleaning and Mainte-
nance, page 25)
2. Replace gas regulator
1. 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 burners until air
is removed from line.
Have gas line checked
by local propane gas
company
3. Observe minimum
installation clearances
(see pages 9-12)
4. Clean burners (see
Cleaning and Maintenance,
page 25) or replace
burner orifice(s)
TROUBLE-
SHOOTING
Continued
POSSIBLE
CAUSE
1. Burner orifice(s)
clogged
2. Inlet gas pressure is
too low
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 manu-
facturing processes
and logs curing
1. Not enough combus-
tion/ventilation air
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)
Continued