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105850-01D
6
PREVENTATIVE
MAINTENANCE SCHEDULE
Item
Fuel tank
Filler neck screen
Fuel filter assembly (Fuel tank)
Fuel filter lines
Fuel filter (In pump or external
canister)
Spark plug
Fan blades and air deflectors
Air passages around burner head
Motor
WARNING: Never service heater while it is plugged
in, operating, or hot. Severe burns and electrical
shock can occur.
How To
See Storing, Transporting, or Shipping, page 5
Lift out of fuel tank and rinse with clean kerosene
See Fuel Filters, page 11
See Fuel Lines, Page 10
See Fuel Filters, page 11
See Spark Plug, page 9
See Fan Blades and Air Deflectors, page 9
Remove debris and trash with a clean, soft cloth
How Often
Flush every 150-200 hours of operation or as needed
Check for particles in fuel when filling fuel tank.
Clean when dirty
Clean twice a heating season or replace as needed
Check and tighten loose connections occasionally
Clean fuel filter element every 250 hours
Clean and regap every 300 hours of operation or
replace as needed
Clean each season or as needed
Check each season for dirt and debris
Not required, permanently lubricated
OBSERVED PROBLEM
WARNING: Never service heater while it is plugged in,
operating, or hot. Severe burns and electrical shock can occur.
Only a qualified service person should service and repair heater.
TROUBLESHOOTING
Motor does not start when heater is plugged
in and thermostat setting is higher than
surrounding air temperature
1. No power or low voltage at heater due to:
A) Damaged power cord or extension cord
B) Wrong size extension cord
C) Heater plugged into outlet with volt-
age lower than 120 volt
2. Loose electrical connections
3. Motor overload protector tripped due to:
A) Dirty fan
B) Debris pulled into fan area by fan
C) Binding pump
D) Low voltage
4. Flame-out control not reset
5. Damaged flame-out control
6. Damaged power relay
7. Damaged thermostat
8. Binding pump
1. A) Check condition of power cord or ex-
tension cord. Repair or replace if damaged
B) Use extension cord with proper wire
size (see To Start Heater, page 4)
C) Make sure heater is plugged into 120
volt/60 hertz outlet
2. Check connections. Tighten if loose
3. A) See Fan Blades and Air Deflectors,
page 9
B) Remove debris from fan and fan
guard area
C) Turn fan by hand. If fan is hard to
turn, see Pump, page 10
D) See steps B and C under item 1 above
Note:
Be sure to reset motor overload
protector by pressing reset button on top
of motor
4. Press and release flame-out control re-
set button. See Figure 4, page 4 for but-
ton location
5. Replace flame-out control
6. Replace power relay
7. Replace thermostat
8. Turn fan by hand. If fan is hard to turn,
see Pump, page 10
POSSIBLE CAUSE REMEDY
Note:
For additional help, visit DESA International’s
Technical Service web site at www.desatech.com.
PREVENTATIVE MAINTENANCE SCHEDULE
TROUBLESHOOTING