SYMPTOM
Burner will not ignite
Burner runs erratically.
Burner runs, but will not heat.
Burner discharges white smoke.
Burner discharges black smoke.
HSD-SERIES Operator's Manual
TROUBLESHOOTING
PROBABLE CAUSE
Burner switch is not turned on.
Out of fuel.
Trigger gun is closed.
EMF Drive-Belt loose or broken.
Flexible coupler broken.
Dirty or clogged fuel filter/water
separator.
Fuel pump sucking air.
Fuel pump inoperative.
Fuel pickup screen obstructed.
Dirty or clogged fuel nozzle.
Ignition module.
Ignition electrodes damaged or worn.
No voltage.
Pressure switch override.
High limit switch override.
Improper burner air adjustment.
Fuel solenoid valve failure.
Water in the fuel oil.
Dirty fuel filter/water separator.
Dirty fuel nozzle.
Fuel pickup screen obstructed.
Improper air adjustment setting.
Fuel pump malfunctioning.
Poor or improper fuel supply.
Low fuel pump pressure.
Dirty fuel nozzle.
Fuel pickup screen obstructed.
Improper air adjustment setting.
Scale build up in heat exchanger coil.
Low on fuel.
Excessive air supply.
Insufficient air supply.
REMEDY
Check switch position.
Refuel.
Open gun for pressure.
Adjust or replace as necessary.
Replace.
Drain or replace as necessary.
Tighten all fuel intake connections.
Eliminate leaks in intake line.
Check pressure, replace if
necessary
Consult Service Department
Replace fuel nozzle.
Consult Service Department.
With unit running and trigger gun
closed, look through burner sight
glass to ensure there is sparking
across electrodes.
Consult Service Department.
Pressure should be over 250 PSI/
18 Bar to allow burner to come on.
Allow unit to cool down before
reigniting.
Adjust as shown on pg. 16.
Replace.
Drain fuel filter/water separator,
drain fuel tank and replace with
clean fuel.
Replace element.
Replace.
Consult Service Department
Adjust as shown on pg. 16.
Replace.
Check fuel to ensure it is correct.
Drain tank and filter if necessary
and refill with proper fuel.
Check fuel pump pressure, adjust or
replace if needed.
Replace.
Consult Service Department
Adjust as shown on pg. 16.
Consult Service Department.
Refuel. If white smoke persists,
consult Service Department.
Adjust as shown on pg. 16.
Adjust as shown on pg. 16.
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