Carrier 48EZ-A, 48VT-A manual Before you call for service, In Case of Trouble, Monoport Burner

Before you call for service...

...check for several easily-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 or above the indoor temperature during heating season. Be sure the

SYSTEM switch or MODE control is in the COOL or HEAT and not OFF.

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

BURNER FLAME

BURNER

MANIFOLD

C99021

Fig. 11 - Monoport Burner

Copyright 2010 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231	Edition Date: 04/10	Catalog No: OM48EZ---VT---04
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.		Replaces: OM48EZ--- VT--- 03

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