FAULT CONDITION
Motor starts and runs but
heater does not ignite
Heater ignites but ignition
control assembly shuts heat-
er off after a short period
of time
122358-01A
TrOuBleSHOOTing
Continued
POSSIBLE CAUSE
1. No fuel in tank
2. Pump pressure incorrect
3. Dirty fuel filter
4. Obstruction in nozzle
5. Water in fuel tank
WARNING: High voltage!
6. Bad electrical connection
between electronic ignitor
and ignition control assem-
bly or spark ignitor
7. Defective spark ignitor
8. Defective electronic ignitor
9. Defective ignition control
assembly
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 see-
ing the flame)
6. Dirty photocell lens
WARNING: High voltage!
7. Bad electrical connection
between photocell and igni-
tion control assembly
8. Defective photocell
9. Defective ignition control
assembly
www.desatech.com
REMEDY
1. Fill tank with kerosene
2. See Pump Pressure Adjust-
ment, page 11
3. See Fuel Filter, page 11
4. See Nozzle Assembly,
page 12
5. Drain and flush fuel tank
with clean kerosene. See
Storing, Transporting, or
Shipping, page 7
6. Check electrical connec-
tions. See Wiring Diagram,
page 15
7. Clean or replace spark
ignitor, see page 12
8. Replace electronic ignitor
9. Replace ignition control
assembly
1. See Pump Pressure Adjust-
ment, page 11
2. See Air Output, Air Intake,
and Lint Filters, page 10
3. See Fuel Filter, page 11
4. See Nozzle Assembly,
page 12
5. Make sure photocell boot is
properly seated in bracket
6. Clean photocell lens
7. Check electrical connec-
tions. See Wiring Diagram,
page 15
8. Replace photocell
9. Replace ignition control
assembly
9