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103607
OWNER’S MANUAL
1. Wrong pump pressure
2. Dirty air output, air intake and lint
filters
3. Dirty fuel filter
4. Dirt in nozzle
5. Dirty photocell lens
6. Bad flame-out control
Heater ignites, but flame-out control shuts
off heater after a short period of time
TROUBLESHOOTING
WARNING: Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
1. See Pump Pressure Adjustment, page 8
2. See Air Output, Air Intake and Lint Fil-
ters, page 8
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Clean photocell lens
6. Replace flame-out control
OBSERVED FAULT POSSIBLE CAUSE REMEDY
Heater will not ignite, but motor runs for a
short period of time
1. Wrong pump pressure
2. Improper spark plug gap/position or
carbon deposits across gap
3. Dirty fuel filter
4. Dirt in nozzle
5. Water in fuel tank
6. Bad fuel valve
1. See Pump Pressure Adjustment, page 8
2. See Spark Plug, page 10
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Drain and flush fuel tank with clean
kerosene. See Storing, Transporting, or
Shipping, page 6
6. See Fuel Valve, page 9
WARNING: High voltage!
Motor does not start when heater is plugged
in, fan rotates slowly or does not turn
1. Flame-out control not reset
2. Thermostat setting is too low
3. Solid state relay not allowed to reset
4. Binding pump rotor
1. Press flame-out control reset button
2. Turn thermostat knob to a higher setting.
3. Wait two minutes before trying to re-
start heater
4. If fan is hard to turn, see Pump Rotor,
page 11
www.desatech.com
Note:
For additional help, visit DESA
International’s Technical Service web
site at www.desatech.com.
7. Electronic ignitor not grounded
8. Bad electronic ignitor
7. Make sure electronic ignitor mounting
is tight
8. Replace electronic ignitor