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John Deere Operator's Manual 23
Burner motor will not run. Switch is not in "Burner" position. Check switch position.
No voltage. Contact Customer Service.
Motor overload. Motor automatically resets when
cool.
Fuel pump siezed. Allow motor to cool. Repair or
replace.
Blower Fan seized. Allow motor to cool. Repair or
replace.
Burner runs erratically. Water in the fuel oil. Drain fuel filter/water separator.
Drain fuel tank, and replace with
clean fuel.
Dirty fuel filter/water separator. Replace element.
Dirty fuel nozzle. Replace.
Fuel pickup screen obstructed. Consult Service.
Improper air adjustment setting. Adjust as explained on page 19.
Fuel pump malfunctioning. Replace.
Burner runs, but will not heat. Poor or improper fuel supply. Check fuel to ensure it is correct.
Drain tank and replace filter if
necessary and refill with proper fuel.
Low fuel pump pressure. Check fuel pump pressure, adjust or
replace if needed.
Dirty fuel nozzle. Replace.
Fuel pickup screen obstructed. Consult Service.
Improper air adjustment setting. Adjust as explained on page 19.
Scale build up in heat exchanger coil. Consult your Customer Service.
Burner discharges white smoke. Low on fuel. Refuel. If white smoke persists,
consult Customer Service.
Poor or improper fuel supply. Check fuel pump pressure, adjust or
replace if needed.
Dirty fuel nozzle. Replace.
Fuel pickup screen obstructed. Consult Service.
Improper air adjustment setting. Adjust as explained on page 19.
Cold combustion chamber start-up. Run burner for several minutes.
Excessive air supply. Adjust as explained on page 19.
Burner discharges black smoke. Insufficient air supply. Adjust as explained on page 19.
Combustion chamber loaded with Consult your Customer Service.
unburned fuel.
TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE REMEDY