Carrier INDUCED-COMBUSTION GAS FURNACE Quick Manual page 7

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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 FURNACE.
Call your dealer for service. A failure to follow this
warning could result in personal injury or death.
3. Inspect the vent pipe for a sag, holes, or a disconnection.
A horizontal vent pipe must slope upward away from fur-
nace. If rusty joints or seams, or signs of water leakages
are found, call your dealer for service.
4. Restore electrical power to the furnace. (See Fig. 12.)
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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.
6. Replace the access door. (See Fig. 11.)
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 return-air or supply-air grilles. Be sure
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7
WARNING
!
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