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All installations and services must be performed by qualified service personnel.
The following maintenance points should be reviewed periodically to assure the heating
and cooling systems continue to function properly.
: Shut off unit and disconnect the power source before disassembling
the unit.
: Never operate the appliance without clean air filters in place.
: This appliance requires air for combustion, ventilation, and cooling. Do
not block or obstruct air openings in the unit and the air space around the
perimeter of the unit.
1. At least every three months, under normal usage conditions, check and clean all air
filters in the appliance and, if present, in the duct system. If excessively dirty air
filters are not cleaned, or changed, poor system performance will result due to
reduced airflow. Low airflow places unnecessary strain on the compressor, possibly
causing the system to shutdown on the refrigerant high-pressure switch. Refer to
Figure 16 for a sketch of the filter location.
2. Keep the outside condenser coil clean by carefully spraying the finned area with
plain water, from the inside of the coil outward.
3. Carefully remove any leaves, twigs, debris, trash, and insect or small animal nests/
homes from in and around any openings in the appliance housing.
4. Visually inspect the vent terminal for restrictions and blockages. With the heating
system in operation, the vent terminal will be hot. Shut off the unit and allow the
vent terminal to cool before removing any foreign materials from within the vent
terminal.
5. Inspect the exterior of the appliance for signs of excessive heat such as
discoloration of materials, damage from rust or corrosion, or evidence of oil leakage.
Pay special attention to the mounting base the appliance is resting upon. If the base
is severely damaged, deteriorated, or unstable, shutdown the unit and call a
qualified heating contractor for recommendations on repair or replacement of the
base.
6. Do not allow the fuel oil tank to run completely empty. During the summer, keep the
tank full to reduce condensation of moisture on the inside surface of the tank.
If the fuel tank runs completely dry, it may be necessary to bleed air from the fuel
lines. Contact a qualified heating contractor to bleed the lines and restart the
burner.
7. Check the supply and return air connections to the appliance to insure the seals
between the duct and appliance and the appliance and home are intact. Check the
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