Carrier 50SD manual If insufficient heating or cooling is suspected

9.Operational check of the unit to determine working conditions. Repair or adjustment should be made at this time.

Your servicing dealer may offer an economical service contract that covers seasonal inspections. Ask for further details.

Complete maintenance instructions can be found in the unit Installation, Start-Up and Service Instructions.

WARRANTY CERTIFICATES

Unit 50SD has limited warranties. Certificates are located at the back of this book. Be sure to read the warranty carefully to determine the coverage for your unit.

BEFOREYOUR CALL FOR SERVICE, CHECK FOR SEVERAL

EASLILY-SOLVED PROBLEMS

If insufficient heating or cooling is suspected:

( ) Check for sufficient airflow. Check the air filter for dirt. Check for blocked return-air 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 below the indoor temperature during the cooling season. Be sure the system switch is in the COOL position and not in the OFF position.

( ) 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 and unit performance is still unsatisfactory, shut off the unit and call your dealer.

Dealer’s Name

Telephone

Unit Model

Unit Serial Number

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