Desa FPVF33NRA - Manual (Page 27)

www.desatech.com 113109-01D 7
TROUbLEShOOTING
Continued
pOSSIBLE CAUSE
1. Control knob not fully
pressed in
. 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
. Damaged burner
3. Gas regulator defective
1. Not enough air
. Gas regulator defective
3. Residues from manufac-
turing processes and logs
curing
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 5) 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
. Clean burner(s) (see 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
1. Contact local natural or
propane/LP gas company
. C l e a n b u r n e r ( s ) ( s e e
Cleaning and Maintenance,
page 5) or replace burner
orifice(s)
1. Clean burner (see Cleaning
and Maintenance, page 25)
or replace burner orifice(s)
. Replace damaged burner
3. Replace gas regulator
1. Check burner for dirt and
debris. If found, clean
burner (see Cleaning and
Maintenance, page 25)
. Replace gas control
3. Problem will stop after a few
hours of operation
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