Desa CGN18C Owner's Operation And Installation Manual page 22

TROUBLE-
SHOOTING
Continued
22
OBSERVED POSSIBLE
PROBLEM CAUSE
When ignitor button 1. Gas supply turned off
is pressed, there is
spark at ODS/pilot
but no ignition 2. Control knob not in
3. Control knob not
4. Air in gas lines when
5. ODS/pilot is clogged
6. Gas regulator setting is
ODS/pilot lights but 1. Control knob not fully
flame goes out when
control knob is 2. Control knob not
released
3. Manual shutoff valve
4. Thermocouple connec-
5. Pilot flame not touch-
6. Thermocouple dam-
7. Control valve damaged
Burner does not light 1. Burner orifice is
after ODS/pilot is lit
or manual shutoff
valve closed
PILOT position
pressed in while in
PILOT position
installed
not correct
pressed in
pressed in long enough
not fully open
tion loose at control
valve
ing thermocouple,
which allows thermo-
couple to cool, causing
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
aged
clogged
REMEDY
1. Turn on gas supply or
open manual shutoff
valve
2. Turn control knob to
PILOT position
3. Press in control knob
while in PILOT
position
4. Continue holding down
control knob. Repeat
igniting operation until
air is removed
5. Clean ODS/pilot (see
Cleaning and Mainte-
nance, page 21) or
replace ODS/pilot
assembly
6. Replace gas regulator
1. Press in control knob
fully
2. After ODS/pilot lights,
keep control knob
pressed in 30 seconds
3. Fully open manual
shut-off valve
4. Hand tighten until
snug, then tighten 1/4
turn more
5. A) Contact local
natural gas company
B) Clean ODS/pilot
(see Cleaning and
Maintenance, page 21)
or replace ODS/pilot
assembly
6. Replace thermocouple
7. Replace control valve
1. Clean burner (see
Cleaning and Mainte-
nance, page 21) or
replace burner orifice
101806