Desa GA3700 Owner's Operation And Installation Manual page 26

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
combustion
Slight smoke or odor during
initial operation
26
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
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
1. Manifold pressure is too
low
2. Burner orifice(s) clogged
1. Burner orifice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
3. Residues from manufac-
turing processes and logs
curing
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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 24) or replace 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(s) (see Cleaning
and Maintenance, page 24)
or replace burner orifice(s)
3. Reconnect leads (see Wir-
ing Diagram, page 29)
4. Replace battery in transmit-
ter and receiver
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 24) or replace burner
orifice(s)
1. Clean burner (see Cleaning
and Maintenance, page 24)
or replace burner orifice(s)
2. Replace damaged burner
3. Replace gas regulator
1. Check burner for dirt and
debris. If found, clean
burner (see Cleaning and
Maintenance, page 24)
2. Replace gas control
3. Problem will stop after a few
hours of operation
113109-01G