32
troubleshooting
SYMPTOM
PROBABLE CAUSE
REMEDY
Blower runs, but
burner will not ignite.
Dirty or clogged fuel nozzle
Replace fuel nozzle.
Ignition module.
Consult your Customer Service.
Ignition electrodes
damaged or worn.
With unit running and trigger
gun closed, look through burner
sight glass to ensure there is
sparking across electrodes.
No voltage.
Consult Service Department.
Pressure switch override.
Pressure should be over 375
PSI
High limit switch override.
Allow unit to cool down before
reigniting.
Improper burner air
adjustment.
Adjust.
Fuel solenoid valve failure.
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.
Replace.
Dirty fuel nozzle.
Replace.
Improper air adjustment
setting.
Adjust.
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 or clogged fuel nozzle.
Replace fuel nozzle.
Improper burner air
adjustment setting.
Adjust
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.
Excessive air supply.
Adjust
Burner discharges
black smoke.
Insufficient air supply.
Adjust
