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User’s Information
A furnace is not a household appliance. It is complex and
requires professional maintenance and repair.
That’s why attempts at “do-it-yourself” repairs on an in-
warranty unit may void the remainder of your warranty.
Other than performing the simple maintenance recom-
mended in this manual, you should not attempt to make any
adjustments to your furnace. Your dealer will be able to take
The Problem Solver
care of any questions or problems you may have. A periodic
inspection of your furnace should be made by a qualified
service agency at the start of each heating season.
Keep your furnace looking like new for years.
Clean the enamel finish of your furnace with ordinary soap
and water. For stubborn grease spots, use a household
detergent. Lacquer thinner or other synthetic solvents may
damage the finish.
DOWNFLOW FILTER
Downflow Furnace Filters
Downflow/Horizontal furnaces are factory supplied with
2 standard size permanent type air filters which may be
located remote to the furnace or in the return air duct. Check
with your dealer for the location of your filters.
A downflow/horizontal furnace vertical return air filter
application, as shown, features two 14" x 20" x 1" filters in
the 14-1/2" wide furnace cabinets; or two 16" x 20" x 1" filters
in the 17-1/2", 21", and 24-1/2" wide furnace cabinets.
REQUIRED FILTERS - DOWNFLOW
CABINET WIDTH FILTER QUANTITY & SIZE
14-1/2" 2 - 14" X 20" X 1"
17-1/2" 2 - 16" X 20" X 1"
21" 2 - 16" X 20" X 1"
24-1/2" 2 - 16" X 20" X 1"
Save time and money. Before calling for service, check the following:
Problem Possible Trouble Possible Remedy
No Heating –
Blower does not operate.
Insufficient Heating –
Blower operates continuously.
No Heat – Vent motor is running.
Unusual Noise
1. Thermostat set incorrectly.
2. Blown fuse or tripped
circuit breaker.
3. Defective component.
4. Burner does not ignite.
5. Main gas line turned off.
6. Blower door removed or ajar.
7. Lockout
1. Dirty air filters.
2. Blocked supply or return
registers.
Restricted or plugged furnace
Condensate drain.
1. Adjust thermostat. See operating instructions.
2. Replace or reset protective device or call for
servicer.
3. Most controls are automatic and will recycle. If
your unit still does not operate call for servicer.
4. Call servicer.
5. Have gas company check.
6. Close door securely to restore power to
blower and gas valve.
7. Turn power on-off-on-off twice in 30 seconds.
1. Clean or replace filters.
2. Make sure registers are open and
No obstacles blocking off the air.
1. Remove drain clamps to condensate trap
and drain pan outlet.
2. Flush or clean drain blockage.
3. Reinstall clamps.
Call your servicer
Airflow