Desa NTH50 Fan User Manual


 
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OWNER’S MANUAL
TROUBLESHOOTING
WARNING: Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
REMEDY
1. See Pump Pressure Adjustment, page 10.
2. See Air Output, Air Intake and Lint
Filters, page 10.
3. See Fuel Filter, page 8.
4. See Nozzle, page 11.
5. Clean photocell lens.
6. Replace flame-out control.
1. See Pump Pressure Adjustment, page 10.
2. See Spark Plug, page 9.
3. See Fuel Filter, page 8.
4. See Nozzle, page 11.
5. Drain and flush fuel tank with clean
kerosene. See Storing, Transporting, or
Shipping, page 6.
6. Make sure electronic ignitor mounting
is tight.
7. Replace electronic
ignitor.
1. Reset flame-out control button, see
Figures 5 and 6, page 5.
2. If fan is hard to turn, see Pump Rotor,
page 12.
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.
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 (earthed)
7. Bad electronic ignitor
1. Flame-out control not reset
2. Binding pump rotor
WARNING: High voltage!