Carrier 40QA024-060 Installation, Start-up And Service Instructions Manual

Contents

20Clean Indoor Unit Bottom Panel — If the bottom panelof the unit becomes dirty or smudged, wipe the outside of thepanel with a soft dry cloth. Use a mild liquid detergent andwipe off carefully with a dry cloth.Clean Indoor Coil — To clean the coil, remove indoor unitbottom panel and vacuum the coil fins, using care not to bendor damage fins.Clean Outdoor Coil (Outdoor Unit)To clean the outdoor coil:1. Remove any dirt or obstruction from dischargeopening.2. Use a garden hose to spray water on the coil. Debristhat collects between coil fins inhibits heat transfer —direct the water spray between coil fins to flush outdebris.Clean Condensate Drains — Clean all drains and drainpans at the start of each cooling season. Check the flow bypouring water into the drain.CLEAN OR REPLACE DRAIN PAN1. Place a plastic sheet on the floor to catch any waterthat may spill from drain pan.2. Remove the intake grille and distribution assembly(attached).3. Remove the condensate water in the drain pan by let-ting water drain into a 3-gallon bucket.4. Remove the 4 screws holding the drain pan.5. Carefully hold the drain pan to remove it from theassembly.SERVICEBefore Calling for Service — Save the cost of a servicecall by doing the following:1. Be sure main power to system is turned on.2. Press Mode button until OFF is displayed. Wait 5 min-utes.3. Press Mode button until either COOL or HEAT is dis-played (as desired).4. Adjust thermostat set point to desired room tempera-ture. If system starts within a few minutes, service maynot be necessary. If system does not operate properly,check Table 7 for typical solutions.IF SYSTEM FAILS TO OPERATE — Be sure:• unit ON/OFF switch is in ON position• fuse or circuit breaker is not trippedFRESH AIR INSTALLATION OPTIONThe units have an installation option, which allows for fieldinstallation of fresh air ventilation. Plan the installation careful-ly. Before beginning, measure carefully and follow acceptablebuilding practices, NEC, and local codes.Ventilation-Air Accessory — Refer to ventilation airaccessory installation instructions.TROUBLESHOOTINGIf the under-ceiling fan coil unit fails to start or operateproperly, sometimes the problem is minor and can be handledwithout a service call. Refer to Table 7 for some common prob-lems, causes, and typical solutions. See Fig. 20 and 21 for addi-tional system troubleshooting details. If the problem cannot becorrected, contact a local dealer for further assistance.Some metal parts and sharp fins of outdoor unit coil cancause personal injury during cleaning. Clean coil carefully.Do not use a screwdriver to pry drain pan out of assembly— it could damage the pan.When servicing unit, turn off all electric power to unit toavoid shock hazard or injury from rotating parts.Do not vent refrigerant to atmosphere when servicing unit.Recover refrigerant during system repair or unit removal.Fig. 23 — Cleaning Filters