Carrier 48TM004-014 Before You Call For Service, Check, For Problems That Can Be Easily Solved

Models: 48TM004-014 48TF004-014

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BEFORE YOU CALL FOR SERVICE, CHECK

FOR PROBLEMS THAT CAN BE

EASILY SOLVED

If insufficient heating or cooling is suspected:

( ) Check for sufficient airflow. Check the air filter for dirt. Check for blocked return- or supply-air grilles. Be sure they are open and unobstructed. If these checks do not reveal the cause, call your servicing dealer.

If your unit is not operating at all, check the following list for easy solutions:

( ) Check to be sure that your thermostat temperature selector is set above the indoor temperature during the heating season, or below the indoor temperature during the cooling season. Be sure the SYSTEM switch in the proper HEAT, COOL or AUTO. position and not in the OFF position.

(

) Is the electrical supply switch ON? Are any fuses blown,

or has the circuit breaker tripped?

(

) During the heating season, check the external manual shut-

off valve. Is this lever parallel with the pipe, indicating that the valve is open? Or is the lever at a right angle, indicating that the valve is closed? If closed, has the gas been shut off for safety reasons? Otherwise, you may open the valve and follow the start-up procedures listed in this manual.

NOTE: Before proceeding with the next check, turn OFF the electrical power supply to the unit. Remove the control access door.

( ) During the heating season, check the control dial on the gas valve. Is it in the ON position? If it is not, be sure it has not been turned off for safety reasons. If no safety hazards are present, follow the start-up procedures in this manual.

( ) If your unit still fails to operate, call your servicing dealer for troubleshooting and repairs. Specify the model and serial numbers of your unit. (Record them in this manual in the space provided.) If the dealer knows exactly which unit you have, he may be able to offer suggestions over the phone, or save valuable time through knowledgeable preparation for the service call.

IN CASE OF TROUBLE

If, after performing the above, unit performance is unsatis- factory, shut off the unit and call your dealer.

Dealer’s Name _____________________________________

Telephone No. _____________________________________

Unit Model ________________________________________

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Carrier 48TM004-014 Before You Call For Service, Check, For Problems That Can Be Easily Solved, In Case Of Trouble