Bryant 557A Performing Routine Maintenance, Before YOU Request a ``SERVICE Call, Heating Cycle

HEATING CYCLE

If you own a packaged air conditioner that includes electric heat as an accessory, you need only program your thermostat for heating.

With the SYSTEM switch of your indoor thermostat set to the HEAT position, the heating section of your home comfort system will operate until room temperature is raised to the level you have selected. Of course, the heating unit will have to operate for longer periods to maintain a comfortable envi- ronment on colder days and nights than on moderate ones.

PERFORMING ROUTINE MAINTENANCE

With the proper maintenance and care, your air conditioner will operate economically and dependably. Maintenance can be accomplished easily by referring to the following direc- tions. However, before performing maintenance, consider these important safety precautions:

·DISCONNECT ALL ELECTRICAL POWER TO THE AIR CONDITIONER BEFORE REMOVING ACCESS PANELS TO PERFORM SERVICE OR MAINTENANCE. For a packaged air conditioner unit, disconnect power to the unit and any supplemental electric heaters.

NOTE: THERE MAY BE MORE THAN ONE ELECTRICAL DISCONNECT SWITCH.

·ALTHOUGH SPECIAL CARE HAS BEEN TAKEN TO MINIMIZE SHARP EDGES IN THE CONSTRUCTION OF YOUR UNIT, BE EXTREMELY CAREFUL WHEN HAN- DLING PARTS OR REACHING INTO THE UNIT.

your dealer show you the location of your ®lter(s) and the pro- cedures for removal and replacement.

If you have any questions about the removal and/or cleaning of your ®lter(s), contact your dealer for assistance.

If grass clippings, leaves, shrubbery, and debris are kept away from the unit, minimal care should be sufficient to keep the system functioning properly. However, if the outdoor coil be- comes dirty, use a brush or vacuum cleaner and soft brush attachment to clean the exterior surface. If dirt is deep in the coil, contact your dealer for service. The outdoor fan motor may have to be disconnected and the top panel removed to gain access to the coil for thorough cleaning. Do not attempt this yourself.

CHECK THE AIR FILTER

A dirty air ®lter will cause excessive strain on the compres- sor and blower motor. This can cause the components to over- heat and automatically shut down. In the extreme, the com- ponents will fail and need to be replaced. To avoid inefficient or failed operation of your unit, CHECK THE FILTER(S) EV- ERY 3 TO 4 WEEKS. Replace ®lter(s) when necessary, or clean the ®lter(s) if you have the reusable type.

Disposable ®lters should be replaced by similar, new ®lters of the same dimensions.

Reusable, permanent ®lters should be washed in a solution of cold water and mild detergent, then rinsed and thoroughly dried. THE FILTER MUST BE COMPLETELY DRY BE- FORE BEING REINSTALLED. To avoid prolonged shut- down of your unit while a ®lter is drying, you should have an extra ®lter on hand. This would allow you to rotate between the two with minimal downtime for your comfort system. Ex- tra ®lters may be purchased from your dealer.

PACKAGED SYSTEM: The ®lter(s) and ®lter rack for a pack- aged system are supplied and installed by the contractor or dealer. Typically, the ®lter(s) and rack are located in the return- air duct in the unit or behind the return-air grille(s). Have

UNIT SUPPORT

Your packaged unit should be maintained at a level position. If its support should shift or settle so that the unit is no longer level, you should correct the condition. Relevel it promptly to assure condensate drainage out of the unit. If you notice that water or ice collects beneath the unit, arrange for it to be drained away from the unit.

BEFORE YOU REQUEST A ``SERVICE CALL''

BEFORE YOU CALL FOR SERVICE, CHECK FOR THESE EASILY SOLVED PROBLEMS:

·Check the indoor and outdoor disconnect switches. Verify that circuit breakers are ON or that fuses have not blown.

·Check for sufficient air¯ow. Check the air ®lter(s) for any accumulations of dirt. Check for blocked return-air or supply- air grilles. Be sure grilles are open and unobstructed.

·Check the settings on your indoor thermostat. If you de- sire cooling, see that the temperature control selector is set below room temperature and the SYSTEM switch is on the COOL or AUTO position. If you require warmth, be sure the temperature control selector is set above room temperature and the SYSTEM switch is at HEAT or AUTO. The FAN switch should be set at ON for continuous blower operation or AUTO if you wish the blower to function only while the unit is operating.

If your comfort system still fails to operate, contact your ser- vicing dealer for troubleshooting and repairs. Specify your ap- parent problem, and state the model and serial numbers of your equipment. (You should have them recorded on page 4 of this booklet.) With this information, your dealer may be able to offer helpful suggestions over the phone, or save valu- able time through knowledgeable preparation for the service call.

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