—7—
3. Inspect the vent pipe for sags, holes,
cracks, or disconnections.Any hori-
zontal vent pipe must slope upward,
away from the furnace. If rusty
joints or seams, or signs of water
leakage are found, call your dealer
for service.
4. Reinstall the burner enclosure front.
5. If your furnace is free of the above
conditions, restore electrical power
to your furnace. (See Fig. 11.)
6. Start your furnace and observe its
operation. Watch the burner flames
to see if they are clear blue, almost
transparent. (See Fig. 20.) If you
observe a suspected malfunction, or
that the burner flames are not clear
blue, call your dealer.
20
A CHECKUP
CHECKLIST
Your furnace represents an important in-
vestment in your family’s comfort and
your home’s value. To keep it in tip-top
shape and as a preventative to future
problems, have a trained service
specialist give your furnace a profes-
sional check-up annually. The following
checklist can be used as a guideline to
proper service:
•
Inspect all flue gas passages, burners,
heat exchangers, and inducer assembly.
•
Inspect all combustion and ventilation
air passages and openings, including vent
pipe terminations outside the structure.
•
Checkgaspipesleadingtoandinsideof
your furnace for leaks.
•
Inspect, clean, and lubricate the blower
motor and wheel as required.
NOTE
: If oil ports are provided, refer to
the unit Service and Maintenance Instruc-
tionsforblowermotor oiling information.
The motor must be oiled by a qualified
service technician.
•
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 electrical wiring, connections,
and components for loose connections.
•
Perform an operational checkout to
determine whether your furnace is work-
ingproperly and if it requires adjustments.
•
Examine the physical support of the
furnace;the support should be sound with
no cracks, sagging, gaps, etc. around the
base.
•
Checkthefurnaceforanyobvioussigns
of deterioration.
•
Your servicing dealer offers an
economical service agreement that
covers seasonal inspections; ask for
details.
BEFOREYOU REQUEST
A SERVICE CALL
Ifyour furnaceisnotoperatingornotper-
forming properly, you may save the ex-
pense of a service call by checking a
few things yourself before calling for
service.
FOR INSUFFICIENTAIRFLOW:
•
Check for dirty air filter(s).
•
Check for blocked return-air or supply-
air grilles throughout your home; ensure
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 1 only if furnace
fails to start.
•
Check thermostat for proper tempera-
ture (set above room temperature).
•
Is the thermostat set on HEAT?
•
Checkfuses and circuit breakers.Is the
electrical supply on?
•
Is the manual shutoff valve in gas s
upply pipe in open position? (Follow
start-up procedures if you open gas
valve.)
NOTE:
Turn off the electrical power sup-
ply before continuing with checklist.
•Is the control knob on gas valve in ON
position? (Follow start-up procedures if
you must reset knob to ON.)
•Check the manual-reset flame rollout
switch located on the burner assembly.
(See Fig. 2.) If the furnace has experi-
enced 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
callforservice.See“ShuttingDownYour
Furnace” section in this manual.
•Checkfor obstructions around the vent
termination.
If your furnace still fails to operate, call
your service representative.
Foryourconvenience,recordtheproduct
and serial numbers on the form on
page 2. Should you ever require service,
you will have ready access to the
information needed by the service
representative.
DANGER
If holes are found in the vent
pipe, or if it has become discon-
nected, toxic fumes can escape
into your home. DO NOT OPER-
ATE YOUR FURNACE. Call your
dealer for service.
!
