www.desatech.com
123779-01C
20
TROUBLEShOOTING
Continued
ObSERVED PRObLEM
When ignitor button is pressed,
there is spark at ODS/pilot but
no ignition
ODS/pilot lights but flame
goes out when control knob
is released
Burner does not light after
ODS/pilot is lit
POSSIbLE CAUSE
1. Gas supply turned off or
equipment shutoff valve
closed
2. Control knob not in PILOT
position
3. Control knob not pressed
in while in PILOT position
4. Air in gas lines when in-
stalled
5. Depleted gas supply (pro-
pane/LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not
correct
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
thermocouple, which al
-
lows 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
5. Thermocouple connection
loose at control valve
6. Thermocouple damaged
7. Control valve damaged
1. Inlet gas pressure is too
low
2. Burner orifice is clogged
REMEDY
1. Turn on gas supply or open
equipment 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 ignit-
ing operation until air is
removed
5. Contact local propane/LP
gas company
6. Clean ODS/pilot (see
Cleaning
, page 18) or re
-
place ODS/pilot assembly
7. Replace gas regulator
1. Press in control knob fully
2. After ODS/pilot lights, keep
control knob pressed in 30
seconds
3. Fully open equipment shut
-
off valve
4. A) Contact local natural or
propane/LP gas company
B) Clean ODS/pilot (see
Cleaning
, page 18) or re
-
place ODS/pilot assembly
5. Hand tighten until snug,
then tighten 1/4 turn more
6. Replace pilot assembly
7. Replace control valve
1. Contact local natural or
propane/LP gas company
2. Clean burner (see
Clean-
ing
, page 18) or replace
burner orifice
