If you have difficulty in locating your air filter or if you
have questions concerning proper filter maintenance,
contact your dealer for instructions. When replacing your
unit filters, always use the same size and type of filter that
was originally supplied by the installer
Units with outdoor air capability have a cleanable filter
for the outdoor air. This filter should be checked
semi-annually and cleaned as necessary with steam or hot
water and a mild detergent. Do not use throwaway filters
in place of cleanable filters.
Compressor
All compressors are factory supplied with a normal charge
of the correct type refrigeration-grade oil in them and
should not require additional oil.
Condenser Fan
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal
injury.
Do not poke sticks, screwdrivers, or other object into
revolving fan blades.
The fan must be kept free of all obstructions to ensure
proper cooling. Contact your dealer for any required
service.
Electrical Controls and Wiring
Ensure wires do not contact refrigerant tubing or sharp
edges. Electrical controls are difficult to check without
proper instrumentation. If inadequate cooling is suspected,
contact your qualified local dealer for service.
Combustion Area and Vent System
The combustion area and vent system should be visually
inspected before each heating season.
FIRE HAZARD
Failure to follow this warning could result in personal
injury equipment damage.
If your unit makes any unusual or especially loud
noises during heating, shut down the heating section
and call your qualified service technician.
Proceed as follows to inspect the combustion area and
power-venting system of your unit.
• Turn off gas supply to your unit.
• Turn off electrical power to your unit; install lockout tag.
• Remove compressor access panel.
• Using a flashlight, carefully inspect the burner areas for
dirt, soot, or scale.
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in damage to
equipment.
If dirt, soot, rust or scale accumulations are found, call
your service technician and do not operate your
heating section.
• When you have completed your inspection, follow the
start-up procedures in this manual to restore your unit to
operation.
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal
injury.
Components in heat section may be hot after unit has
been started up. When observing flame, be careful not
to get close to or touch heating components.
• Observe unit heating operation. Watch the burner flame
to see if it is bright blue. If you observe a suspected
malfunction or that the burner flame is not bright blue,
shut down the unit and call your dealer.
• Replace compressor access panel.
BEFORE YOU CALL FOR SERVICE,
CHECK FOR PROBLEMS THAT
CAN BE EASILY SOLVED
If insufficient heating or cooling is suspected:
( ) Check for sufficient airflow. Check the air filter for dirt
Check for blocked return- or supply-air grilles. Be sure
they are open and unobstructed. If these checks do not
reveal the cause, call your servicing dealer.
If your unit is not operating at all, check the following list
for easy solutions:
( ) Check to be sure that your thermostat/unit controller
temperature selector is set above the indoor temperature
during the heating season, or below the indoor
temperature during the cooling season. Be sure the
SYSTEM switch in the proper HEAT or COOL position
and not in the OFF position.
( ) Is the electrical supply switch ON? Are any fuses
blown, or has the circuit breaker tripped'?
( ) During the heating season, check the external manual
shutoff valve. Is this lever parallel with the pipe,
indicating that the valve is open'? Or is the lever at the
right angle, indicating that the valve is closed'? If closed,
has the gas been shut off for safety reasons'? Otherwise,
you may open the valve and follow the start-up
procedures listed in this manual.
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