Desa CDL3924NT Owner's Operation And Installation Manual page 23

OBSERVED PROBLEM
Burner does not light after ODS/
pilot is lit
Delayed ignition of one or both
burners
B u r n e r b a c k f i r i n g d u r i n g
combustion
Slight smoke or odor during initial
operation
Heater produces a whistling noise
when burners are lit
White powder residue forming
within burner box or on adjacent
walls or furniture
Moisture/condensation noticed
on windows
Dark residue on logs inside of
their fireplace Note: After remov-
ing all causes of residue deposits,
completely clean fireplace and
appliance off residue before reus-
ing appliance
111347-01E
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
1. Manifold pressure is too low
2. Burner orifice(s) clogged
1. Burner orifice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
3. 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. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Not enough combustion/ven-
tilation air
1. Improper log placement
2. Drafts or other air currents
affecting flame pattern
3. Air holes at burner inlet
blocked
4. Burner flame holes blocked
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REMEDY
1. Contact local natural or pro-
pane/LP gas company
2. Clean burner(s) (see Cleaning
and Maintenance, page 21) or
replace burner orifice(s)
1. Contact local natural or pro-
pane/LP gas company
2. Clean burner(s) (see Cleaning
and Maintenance, page 21) or
replace burner orifice(s)
1. Clean burner (see Cleaning
and Maintenance, page 21)
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 21)
2. Replace gas control
3. 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 local natural
or propane/LP gas company
3. Observe minimum installation
clearances (see page 9)
4. Clean burners (see Cleaning
and Maintenance, page 21)
or replace burner orifice
1. Turn heater off when using
furniture polish, wax, carpet
cleaners or similar products
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
1. Properly locate logs (see In-
stalling Logs, page 15)
2. Eliminate source of drafts
around heater
3. Clean out air holes at burner
inlet. Periodically repeat as
needed
4. Remove blockage
23