Carrier 48ES---A Owner's Information Manual

Also see for 48ES---A: Owner's information manual Owner's information manual Installation instructions Installation instructions

Contents

9FIRE, EXPLOSION HAZARDFailure to follow this warning could result in personalinjury, death and/or property damage.If your unit makes an especially loud noise when the mainburners are ignited, shut down the heating section and callyour dealer.! WARNINGBURN HAZARDFailure to follow this caution may result in personal injury.Components in heating section may be hot after unit hasbeen started up. When observing flame, be careful not to getclose to or touch heating components.! CAUTIONRegular Dealer MaintenanceIn addition to the type of routine maintenance you might be willingto perform, your unit should be inspected regularly by a properlytrained service technician. An inspection (preferably each year, butat least every other year) should include the following:1. Inspection of all flue product passages--including the burn-ers, heat exchanger, and flue collector box, Mare sure theburner flames are blue in color and in proper adjustment.Refer to Fig. 11 for burner flame.2. Inspection of all combustion--and ventilation--air passagesand openings.3. Close inspection of all gas pipes leading to and inside ofyour unit.4. Inspection and, if required, cleaning of the outdoor andindoor coils.5. Inspection and, if required, cleaning of the indoor coil con-densate drain pan.MANIFOLDBURNERBURNER FLAMEC99021Fig. 11 -- Monoport Burner6. Inspection and cleaning of blower wheel housing andmotor.7. Inspection of all supply--air and return--air ducts for leaks,obstructions, and insulation integrity. Any problems foundshould be resolved at this time.8. Inspection of the unit base to ensure that no cracks, gaps,etc., exist which may cause a hazardous condition.9. Inspection of the unit casing for signs of deterioration.10. Inspection of all electrical wiring and components to assureproper connection.11. Inspection for leaks in the refrigerant circuit. Pressurecheck to determine appropriate refrigerant charge.12. Operational check of the unit to determine workingconditions. Repair or adjustment should be made at thistime.Your servicing dealer may offer an economical service contract thatcovers seasonal inspections. Ask for further details.Complete service instructions can be found in the unit Installation,Start--up and Service Instructions.Warranty CertificateYour unit has a limited warranty. Be sure to read the warrantycarefully to determine the coverage for your unit.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. Checkfor blocked return--air or supply--air grilles. Be sure they are openand unobstructed. If these checks do not reveal the cause, call yourservicing dealer.If your unit is not operating at all, check the following list foreasy solutions:( ) Check to be sure that your thermostat temperature selector isset below the indoor temperature during the cooling season orabove the indoor temperature during heating season. Be sure theSYSTEM switch or MODE control is in the COOL or HEATposition and not in the OFF position.( ) If your unit still fails to operate, call your servicing dealer fortroubleshooting and repairs. Specify the model and serial numbersof your unit. (Record them in this manual in the space provided.) Ifthe dealer knows exactly which unit you have, he may be able tooffer suggestions over the phone, or save valuable time throughknowledgeable preparation for the service call.In Case of TroubleIf you perform the steps above and unit performance is stillunsatisfactory, shut off the unit and call your dealer.

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