Desa FVFM27PR Electric Heater User Manual


 
www.desatech.com
108382-01G 23

ODS/pilot lights but ame goes
out when control knob is re-
leased
Burner does not light after ODS/
pilot is lit
Delayed ignition burner
Burner backring during com-
bustion
Slight smoke or odor during initial
operation

1.
Control knob not fully pressed in
2. Control knob not pressed in
long enough
3. Equipment shutoff valve not
fully open
4. Pilot ame not touching ther-
mocouple, which allows ther-
mocouple 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. Burner orice clogged
2. Inlet gas pressure is too low
3. Thermopile leads disconnect-
ed or improperly connected
4. Burners will not come on in
remote position
1. Manifold pressure is too low
2. Burner orice clogged
1. Burner orice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
3. Residues from manufacturing
processes and logs curing
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 20) 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. Clean burner (see Cleaning
and Maintenance, page 20)
or replace burner orice
2. Contact local natural or pro-
pane/LP gas company
3. Reconnect leads (see Wiring
Diagram, page 21)
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 20)
or replace burner orice
1. Clean burner (see Cleaning
and Maintenance, page 20)
or replace burner orice
2. Replace damaged burner
3. Replace gas control
1. Check burner for dirt and
debris. If found, clean burner
(see Cleaning and Mainte-
nance, page 20)
2. Replace gas control
3. Problem will stop after a few
hours of operation
TROUbLESHOOTING
Continued