Desa BTU/HR - Manual (Page 8)

www.desatech.com 113282-01C 8
POSSIBLE CAUSE
1. No fuel in tank
2. Pump pressure incorrect
3. Dirty fuel filter
4. Obstruction in nozzle
5. Water in fuel tank
6. Bad electrical connection be-
tween ignitor and ignition con-
trol assembly
7. Defective ignitor
8. Defective ignition control as-
sembly
9. 200 Model Only: Defective
fuel valve (Models equipped
with fuel valve only)
1. Pump pressure incorrect
2. Dirty air intake, air output,
and/or lint filter
3. Dirty fuel filter
4. Obstruction in nozzle
5. Photocell assembly not properly
installed (not seeing the flame)
6. Dirty photocell lens
7. Bad electrical connection be-
tween photocell and ignition
control assembly
8. Defective photocell
9. Defective ignition control as-
sembly
REMEDY
1. Fill tank with kerosene
2. See Pump Pressure Adjust-
ment, page 10
3. See Fuel Filter, page 10
4. See Nozzle Assembly, page 13
5. Drain and flush fuel tank with
clean kerosene. See Storing,
Transporting, or Shipping,
page 6
6. Check electrical connections.
See Wiring Diagrams, page 16
7. Replace ignitor, see page 11
8. Replace ignition control as-
sembly
9. See Fuel Valve, page 11
1. See Pump Pressure Adjust-
ment, page 10
2. See Air Output, Air Intake, and
Lint Filters, page 9
3. See Fuel Filter, page 10
4. See Nozzle Assembly, page 13
5. Make sure photocell boot is
properly seated in bracket
6. Clean photocell lens
7. Check electrical connections.
See Wiring Diagrams, page 16
8. Replace photocell
9. Replace ignition control as-
sembly
FAULT CONDITION
Motor starts and runs but heater
does not ignite
Heater ignites but ignition con-
trol assembly shuts heater off
after a short period of time
WARNING: High voltage!
TROUBLESHOOTING
Continued
WARNING: High voltage!