Desa VSGF36NRC Owner's Operation And Installation Manual page 27

OBSERVED PROBLEM
ODS/pilot lights but flame
goes out when control knob
is released.
Burner does not light after
ODS/pilot is lit.
Delayed ignition of one or both
burners.
Burner backfiring during com-
bustion.
121082-01G
TROUbLEShOOTING
Continued
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
thermocouple, 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.
8. Safety interlock system has
been triggered.
1. Inlet gas pressure is too
low.
2. Burner orifice(s) clogged.
3. Thermopile leads disconnect-
ed or improperly connected.
4. Burner will not come on in
remote position.
5. Wire disconnected from gas
control.
1. Manifold pressure is too
low.
2. Burner orifice(s) clogged.
3. M i s l o c a t e d c r o s s o v e r
tube.
1. Burner orifice is clogged or
damaged.
2. Damaged burner.
3. Gas regulator defective.
www.desatech.com
REMEDY
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 and Maintenance,
page 25) or replace ODS/
pilot assembly .
5. Hand tighten until snug, then
tighten 1/4 turn more.
6. Replace pilot assembly.
7. Replace control valve.
8. Wait one minute for safety
interlock system to reset.
Repeat ignition operation.
1. Contact local natural or
propane/LP gas company.
2. C l e a n b u r n e r ( s ) ( s e e
Cleaning and Maintenance,
page 25) or replace burner
orifice(s).
3. Reconnect leads (see Wir-
ing Diagram, page 30).
4. Replace battery in transmit-
ter and receiver.
5. See Wiring Diagram, page 30.
1. Contact local natural or
propane/LP gas company.
2. Clean burner(s) (see Cleaning
and Maintenance, page 25)
or replace burner orifice(s).
3. Contact qualified service
person.
1. Clean burner (see Cleaning
and Maintenance, page 25)
or replace burner orifice(s).
2. Replace damaged burner.
3. Replace gas regulator.
27