www.desatech.com
113195-01A
26
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 ther-
mocouple to cool, causing pi-
lot flame to go out. This prob-
lem 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
3. Thermopile leads disconnected
or improperly connected
4. Burners will not come on in
remote position
1. Manifold pressure is too low
2. Burner orifice clogged
1. Burner orifice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
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/pi-
lot 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
replace burner orifice
2. Contact local natural gas com-
pany
3. Reconnect leads (see
Wiring
Diagrams
, page 24)
4. Replace battery in transmitter
and receiver
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 control
OBSERVED PROBLEM
ODS/pilot lights but flame goes
out when control knob is re-
leased
Burner does not light after ODS/
pilot is lit
Delayed ignition burner
Burner backfiring during com-
bustion
TROUBLESHOOTING
Continued
