7
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
direction 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 proce-
dures found on pages 3, 4, and 5 of this
user’s manual.
• If for some reason the vent is
blocked, the draft safeguard 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 trouble-
shooting 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 main-
tenance you might be willing to do,
your furnace should be inspected
regularly by a properly trained service
technician. An annual inspection (or
biennial inspection, at least) should
include the following:
1. Inspection of all combustion prod-
uct passages—including the burn-
ers, 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 lubrica-
tion (when required) of the blower
motor and wheel.
NOTE:
Refer to the unit Service Proce-
dures for blower motor oiling infor-ma-
tion. When required, the motor should
be oiled by a qualified service techni-
cian. (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
support 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 condi-
tion. Repair or adjustment should
be made at this time.
Ask your servicing dealer for further de-
tails about an economical service con-
tract that covers seasonal inspections.
