37
SYMPTOM
PROBABLE CAUSE
REMEDY
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 Customer Service.
Improper air adjustment
setting.
Adjust as explained on page 26.
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 Customer Service.
Improper air adjustment
setting.
Adjust as explained on page 26.
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 Customer Service.
Improper air adjustment
setting.
Adjust as explained on page 26.
Cold combustion chamber
start-up.
Run burner for several minutes.
Excessive air supply.
Adjust as explained on page 26.
Burner discharges
black smoke.
Insufficient air supply.
Adjust as explained on page 26.
Combustion chamber
loaded with unburned fuel.
Consult Customer Service.
troubleshooting
