Desa CLD3018PTA - Manual (Page 26)

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TROUBLESHOOTING
Continued
OBSERVED PROBLEM
ODS/pilot lights but flame goes
out when control knob is released
Burner does light after ODS/pilot
is lit
Delayed ignition of burner
Burner backfiring during com-
bustion
Slight smoke or odor during ini-
tial operation
Moisture/condensation noticed
on windows
REMEDY
1. Press in control knob fully
2. After ODS/pilot lights, keep con-
trol knob pressed in 30 seconds
3. Fully open equipment shutoff
valve
4. A) Contact local natural or
propane/LP gas company
B) Clean ODS/pilot (see
Cleaning and Maintenance,
page 23) or replace ODS/pilot
assembly
5. Hand tighten until snug, then
tighten 1/4 turn more
6. Replace pilot assembly
7. Replace control valve
1. Clean burner (see Cleaning and
Maintenance, page 23) or re-
place burner orifice
2. Contact local natural or pro-
pane/LP gas company
1. Contact local natural or pro-
pane/LP gas company
2. Clean burner (see Cleaning
and Maintenance, page 23) or
replace burner orifice
1. Clean burner (see Cleaning
and Maintenance, page 23) or
replace burner orifice
2. Replace damaged burner
3. Replace gas regulator
1. Check burner for dirt and de-
bris. If found, clean burner
(see Cleaning and Mainte-
nance, page 23)
2. Replace gas regulator
3. Problem will stop after a few
hours of operation
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
POSSIBLE CAUSE
1. Control knob not fully
pressed in
2. Control knob not pressed in
long enough
3. Equipment shutoff valve not
fully open
4. Pilot flame not touching ther-
mocouple, which allows
thermocouple to cool, caus-
ing pilot flame to go out. This
problem could be caused by
one or both of the following:
A) Low gas pressure
B) Dirty or partially clogged
ODS/pilot
5. Thermocouple connection
loose at control valve
6. Thermocouple damaged
7. Control valve damaged
1. Burner orifice clogged
2. Inlet gas pressure is too low
1. Manifold pressure is too low
2. Burner orifice 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 manufactur-
ing processes and logs cur-
ing
1. Not enough combustion/ven-
tilation air