Desa CGN12 - Manual (Page 18)

18
REMEDY
1. Turn on gas supply or
open manual shutoff
valve
2. Press in control knob
while turning to PILOT/
IGN position
3. Continue holding down
control knob. Repeat ig-
niting operation until air
is removed
4. Clean ODS/pilot (see
C L E A N I N G A N D
M A I N T E N A N C E ,
page 17) or replace
ODS/pilot assembly
5. Replace gas regulator
1. Press in control knob
fully
2. After ODS/pilot lights,
keep control knob
pressed in 10 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
C L E A N I N G A N D
M A I N T E N A N C E ,
page 17) or replace
ODS/pilot assembly
6. Replace thermocouple
7. Replace control valve
OBSERVED
PROBLEM
When control knob is
pressed in and turned
to the PILOT/IGN po-
sition, there is spark at
ODS/pilot but no igni-
tion
ODS/pilot lights but
flame goes out when
control knob is
released
POSSIBLE
CAUSE
1. Gas supply turned off or
manual shutoff valve
closed
2. Control knob not
pressed in while being
turned to PILOT/IGN
position
3. Air in gas lines when
installed
4. ODS/pilot is clogged
5. Gas regulator setting is
not correct
1. Control knob not fully
pressed in
2. Control knob not
pressed in long enough
3. Manual shutoff valve
not fully open
4. Thermocouple connec-
tion loose at control
valve
5. Pilot flame not touching
thermocouple, which
allows thermocouple 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
6. Thermocouple dam-
aged
7. Control valve damaged
Continued