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7. Troubleshooting
Your heater is designed and built for years of reliable service with regular maintenance. Should
you experience trouble, refer to this section for troubleshooting guidance.
Do not tamper with the unit or controls if you are not qualified – call
your service technician or Technical Support for assistance.
Testing may include working with high voltage electricity, which if mishandled
may cause serious injury or death.
Start Here – First Steps of Trouble Shooting.
It has been our experience that many problems can be traced to improper installation,
improper maintenance, poor fuel quality, or unintended results from changes made to the
system or surrounding structures. So, the first steps in troubleshooting shall always begin with
the following:
Verify installation and environmental factors. Refer to Chapters 2 through 4. Remember that
even if the original installation was properly performed, there can be unintended results from
changes made to the building or structure.
a. Is there adequate combustion and make up air? Have exhaust fans or other
devices been added to the building that may create a negative pressure within
the building? Has another fuel burning appliance been added to the building or
room? Consider make up air requirements for all appliances.
b. Exhaust Flue System: Check draft setting. Have changes taken place on the roof
that might affect the flue stack? Any obstructions (birds nest, etc.) in the flue.
c. Is the electrical circuit still sufficient, or has it been compromised by the addition
of other appliances to the circuit? Is the power clean?
Verify maintenance. If maintenance has not been performed timely and properly – STOP –
perform ALL maintenance (Chapter 6) before troubleshooting. Smoke, soot, trouble in lighting-
off or tripping out can all be caused by lack of proper maintenance.
Verify equipment. Common things to check are:
a. Is the fuel in the tank low? Has the fuel level fallen below the float switch?
b. Are the float switch and thermostat working properly? Verify continuity between the
two pins in the white plug going into the side of the burner.
c. Is the pickup strainer dirty or clogged? Indicated by a high vacuum reading on the
pump inlet gage.
d. Has fuel condition changed (bad fuel, water in fuel)? Check for water emulsified in oil
at the drain. If bad fuel is suspected, drain the tank and fill with different used oil or
#2 heating oil.
e. Has the nozzle or solenoid valve become clogged. Indicated by a high
pressure reading on the pump outlet gauge.
f. Is the air compressor making the correct pressure? Check the air pressure
Call 1-888-370-6531 for Technical Support
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