A Check-Up Checklist; Before You Request A Service Call - Carrier 58MVB Owner's Manual

A CHECK-UP CHECKLIST
Your furnace represents an important investment in your family's
comfort and your home's value. To keep it performing properly
and to prevent future problems, have a trained service specialist
give your furnace a professional check-up annually. The following
checklist can be used as a guideline to proper service:
• Inspect all flue gas passages, burners, heat exchangers, coupling
box(es), and inducer assembly.
• Inspect all combustion-air and vent piping inside structure and
pipe terminations outside the structure.
• Check gas pipes leading to and inside of your furnace for leaks.
• Inspect and clean the blower motor and wheel.
NOTE: The inducer and blower motors are pre-lubricated and
require no additional lubrication. These motors can be identified by
the absence of oil ports on each end of the motor.
• Inspect and change or clean air filter(s) if necessary.
• Inspect all supply- and return-air ducts for obstructions, air
leaks, and insulation. Remedy any problem when necessary.
• Inspect the return-air duct connection(s) at the furnace to ensure
it is physically sound, sealed to the furnace casing, and
terminates outside the space containing the furnace.
• Inspect electrical wiring, connections, and components for loose
connections.
• Perform an operational checkout to determine whether your
furnace is working properly and if it requires adjustments.
• Inspect all condensate drain tubes and condensate trap assembly
for leaks. The condensate removal system should be cleaned
annually by a qualified service agency. Refer to the Service and
Maintenance Instructions Guide for further information.
• Examine the physical support of the furnace. Support should be
sound with no cracks, sagging, gaps, etc. around the base.
• Check furnace for any obvious signs of deterioration.
BEFORE YOU REQUEST A
"SERVICE CALL"
If your furnace is not operating or not performing properly,
you may save the expense of a service call by checking a few
things yourself before calling for service.
NOTE: Record the LED status code BEFORE removing the
blower access door or turning off l15-v power to the furnace.
Removing the blower access door or turning off the l15-v power
will end the LED status code display and erase the code from the
control's memory.
For insufficient airflow:
• Check for dirty air filter(s).
• Check for blocked return-air or supply-air grilles. Be sure they
are open and unobstructed.
If problem still exists, call your dealer for service.
If furnace fails to operate:
Follow this checklist step by step, advancing to the next stop only
if furnace fails to start.
• Check thermostat for proper temperature. Is thermostat set above
room temperature?
• Is thermostat set to HEAT mode?
• Check fuses and circuit breakers. Is the electrical power supply
switch on?
• Is the manual shut-offvalve in the gas supply pipe leading to
the furnace open?
NOTE: Turn off electrical supply before continuing with
checklist.
• Is control switch on gas valve in ON position? (Follow start-up
procedures if you must reset switch to ON position.)
• Check manual reset flame rollout switch located on the burner
box. See Furnace Components. If furnace has experienced high
temperature conditions, this switch will shut off the furnace.
Reset it by pushing the button on the switch. If it trips again,
shut down the furnace and call for service. See "Shutting Down
Your Furnace" section in this manual.
• Check for obstructions around the vent termination.
If your furnace still fails to operate, call your service representative.
For your convenience, record the furnace product and serial
numbers on back page. Should you ever require service, you will
have ready access to the information needed by your service
representative.
This furnace has a light emitting diode (LED) status code display
to aid the installer, service technician, or homeowner while
installing or servicing the unit. The LED code can be seen by
removing the main furnace door and viewing LED through the
view port in the blower access panel.
Regular dealer maintenance
In addition to the type of routine maintenance you might be willing
to do, your furnace should be inspected regularly by a properly
trained service technician. A semiannual inspection (or annual
inspection, at least) should include the following:
1. Inspection of all flue gas passages including the burners,
heat exchanger, inducer, elbow, and vent pipe.
2. Inspection of all combustion and ventilation air passages
and openings.
3. Close check of all gas pipes leading to and inside of your
furnace.
4. Inspection and cleaning of the blower motor and wheel.
5. Routine inspection and cleaning/replacement of the air filter.
6. Inspection of all supply- and return-air ducts for obstruc-
tions, 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 support must be
sound and without sags, gaps, cracks, etc., around the fur-
nace base so as to provide an air seal between the return-air
duct and furnace.
8. A check for loose connections attaching individual com-
ponents. Inspection of all electrical wiring and their connec-
tions.
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 economical
service contract that covers seasonal inspections.
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