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Service Reminder
Call your Lennox service technician if the unit will not oper
ate. Before calling, always check the following to be sure
service is required:
1 - Check that electrical disconnect switches are ON.
2 - Check room thermostat for proper setting.
3 - Replace any blown fuses or reset circuit breakers.
4 - Gas valve should be ON.
5 - Air filter should not be plugged, which will limit air flow.
6 - Is gas turned on at meter?
7 - Is manual main shut-off valve open?
Record the model and serial number of the furnace. These
numbers are on the unit nameplate, which is located on the
blower deck below the combustion air inducer.
Serial Number __________________
Model Number __________________
Safety Precautions
If you discover any of the following, shut down your
unit, and contact a Lennox dealer for an inspection by
a licensed professional service technician (or equiva
lent).
If you repeatedly hear any new or unfamiliar sounds
D
while your unit is operating, there may be a problem. For
example, poorly performing burners can produce unfa
miliar noises.
If you smell any unusual odors, your unit may be operat
D
ing improperly. For example, units can give off unfamil
iar odors if components are required to operate in ab
normal conditions.
D
Look for visible signs of a malfunctioning unit. Examples
include unusual amounts of condensate on windows in
side your house, visibly burnt components or unusual
dirt or rust accumulations on the vent pipe or in the unit.
If you experience headache, nausea, fatigue, or dizzi
D
ness, the cause could be exposure to carbon monoxide
gas. This is often misdiagnosed as the flu because
symptoms are similar. If you suffer from flu-like symp
toms that are exaggerated at home, but seem to sub
side while you are away from the house, exposure to
carbon monoxide could be the cause.
WARNING
Do not use this furnace if any part has been under
water. A flood-damaged furnace is extremely dan
gerous. Attempts to use the furnace can result in
fire or explosion. Immediately call a licensed pro
fessional service technician (or equivalent) to in
spect the furnace and to replace all gas controls,
control system parts, and electrical parts that have
been wet or to replace the furnace, if deemed neces
sary.
Your vigilance may pay off in early detection of a problem
before either personal injury or property damage occurs.
Do not hesitate to contact a qualified service technician as
an investment in your well being.
Planned Service
Pay attention to your furnace. Situations can arise be
tween annual furnace inspections that may result in unsafe
operation. For instance, items innocently stored next to the
furnace may obstruct the combustion air supply. This could
cause incomplete combustion and the production of car
bon monoxide gas.
Annual Furnace Maintenance
At the beginning of each heating season, and to comply
with the Lennox Limited Warranty, your system should be
checked as follows by a licensed professional service tech
nician (or equivalent).
ELECTRICAL SHOCK, FIRE,
OR EXPLOSION HAZARD.
Failure to follow safety warnings exactly could result
in dangerous operation, serious injury, death or
property damage.
Improper servicing could result in dangerous opera
tion, serious injury, death, or property damage.
Before servicing, disconnect all electrical power to
furnace.
When servicing controls, label all wires prior to dis
connecting. Take care to reconnect wires correctly.
Verify proper operation after servicing.
The blower access panel must be securely in place
when the blower and burners are operating. Gas
fumes, which could contain carbon monoxide, can
be drawn into living space resulting in personal inju
ry or death.
1- Check wiring for loose connections, voltage at indoor
unit and amperage of indoor motor
2- Check the condition of the belt and shaft bearings if ap
plicable.
3- Inspect all gas pipe and connections for leaks
4- Check the cleanliness of filters and change if necessary
(monthly).
5- Check the condition and cleanliness of burners and
heat exchanger and clean if necessary.
Page 6
WARNING
WARNING
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