Troubleshooting - Desa 150,000Btu/Hr Ower's Manual

TROUBLESHOOTING

OBSERVED FAULT
Heater ignites, but flame-out control shuts
off heater after a short period of time
Heater will not ignite, but motor runs for a
short period of time
Motor does not start when heater is plugged
in, fan rotates slowly or does not turn
103301
WARNING: Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
POSSIBLE CAUSE
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
1. Wrong pump pressure
2. Carbon deposits on spark plug and/or
improper gap
3. Dirty fuel filter
4. Dirt in nozzle
5. Water in fuel tank
6. Electronic ignitor not grounded
7. Bad electronic ignitor
1. Thermostat setting is too low
2. Flame-out control not reset
3. Solid state relay not allowed to reset
4. Binding pump rotor
7
OWNER'S MANUAL
REMEDY
1. See Pump Pressure Adjustment, page 9
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
1. See Pump Pressure Adjustment, page 9
2. See Spark Plug, page 9
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Drain and flush fuel tank with clean
kerosene
WARNING: High voltage!
6. See Storing Transporting, or Shipping,
page 6
7. Make sure electronic ignitor mounting
is tight.Replace electronic ignitor
1. Turn thermostat knob to a higher setting
2. Press flame-out control reset button
3. Wait two minutes before trying to restart
heater
4. If fan is hard to turn, see Pump Rotor,
page 10