Carrier INDUCED COMBUSTION 58YAV User's Information Manual page 7

If your furnace isn't operating at all, check the following
list for easily solved problems:
• Is your thermostat set above room temperature? Is the
HEAT mode selected?
• Is the electrical power supply switch ON? Is the blower
access door firmly in place? Are any fuses blown? (There
is a 3-amp automotive type fuse on the furnace control
board.) Has a circuit breaker tripped?
• Is the manual shutoff valve in the gas supply pipe leading
to the furnace open? Does the lever point in the same direc-
tion that the pipe runs (open)? Or is it at right angles
(closed)?
NOTE: Before proceeding with the next checks, turn OFF
the electrical power supply to the furnace. Remove the
access doors.
• Is the control knob or switch on the gas valve turned to
the ON position? If this or the preceding check shows an
interruption in the gas supply, make sure the gas has not
been shut off for safety reasons. If nothing else seems to
be wrong, follow the startup procedures found on pages 3,
4, and 5 of this user's manual.
• If for some reason the vent is blocked, the draft safe-
guard switch or blocked vent shutoff switch (when used)
will shut off the furnace. Reset the switch by pushing the
button located on the switch. (See page 2 for switch
location.)
If the switch trips a second time, turn off the furnace and
call for service.
• If your furnace still fails to operate, call your servicing
dealer for troubleshooting and repairs. Tell your dealer the
model and serial numbers for your furnace. (You should
have them recorded on page 8 of this booklet.) By knowing
exactly which furnace you have, the dealer may be able to
offer suggestions over the phone, or save valuable time
through knowledgeable preparation for the service call.
Regular dealer maintenance
In addition to the type of routine maintenance you might
be willing to do, your furnace should be inspected regu-
larly by a properly trained service technician. An annual
inspection (or biennial inspection, at least) should include
the following:
1. Inspection of all combustion product passages—
including the burners, heat exchanger, inducer, and
vent pipe.
2. Inspection of all combustion air and ventilation air
passages and openings.
3. Close check of all gas pipes leading to (and inside of)
your furnace for leaks.
4. Inspection, cleaning, and lubrication (when required)
of the blower motor and wheel.
Refer to the unit Service Procedures for blower
NOTE:
motor oiling information. When required, the motor
should be oiled by a qualified service technician. (Wrong
oil type or excessive oil is detrimental to the motor.)
5. Routine inspection and cleaning/replacement of the
air filter.
6. Inspection of all supply- and return-air ducts for
obstructions, air leaks, and insulation. Any problems
found should be resolved at this time.
7. Inspection of furnace installation for proper support
and any obvious deterioration of the furnace. The sup-
port must be sound and without sags, gaps, cracks,
etc., around the furnace base so as to provide an air
seal between the support and furnace.
8. A check for loose connections attaching individual
components. Inspection of all electrical wiring and
their connections.
9. Operational check of the furnace itself to determine
working condition. Repair or adjustment should be
made at this time.
Ask your servicing dealer for further details about an eco-
nomical service contract that covers seasonal inspections.
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