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connection area, and the vent pipe
for rust.
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NOTE:
If dirt, rust, soot, or scale accu-
mulations are found, call your servic-
ing dealer. DO NOT OPERATE THE
FURNACE.
3. Inspect the vent pipe for a sag,
holes, or a disconnection. A hori-
zontal vent pipe must slope up-
ward. If rusty joints or seams, or
signs of water leakages are found
call your dealer for service.
4. Replace the access doors and re-
store electrical power to the fur-
nace. Be sure bottom door flange is
inside of the furnace casing. (See
Fig. 16, 17, and 26.)
5. Start the furnace and observe its
operation. If possible, watch the
burner flames. Are they burning
bright blue? If not (or if you suspect
some other malfunction), call your
servicing dealer.
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BEFORE YOU REQUEST
A “SERVICE CALL”
BEFORE YOU CALL FOR
SERVICE, CHECK FOR
SEVERAL EASILY SOLVED
PROBLEMS:
• Check for sufficient airflow. Check the
air filter for dirt. Check for blocked re-
turn-air or supply-air grilles. Be sure they
are open and unobstructed. If this isn’t the
cause, call your servicing dealer.
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 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
WARNING
If holes are found—or if the
vent pipe is obstructed or is
not connected—toxic fumes
can escape into your home. DO
NOT OPERATE YOUR FUR-
NACE. Call your dealer for ser-
vice. A failure to follow this
warning could result in per-
sonal injury or death.
!