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Select Product Category Just enter the model number below, and we’ll give you a list of links to all the documents associated with it. Rather than have you commit them all to memory, we made our model numbers easy to find. If you don’t happen to have them handy, you’ll also find the model number printed right on the unit. If your heat pump is geothermal, the model information should be easily found on the front of the unit. You should see the model number printed on rating-plate or decal. Still unable to find that model number. Just call your local Carrier Expert. He or she will be happy to help you. Make sure the temperature is set cooler than the current indoor temperature. If it is not running, make sure the breakers in your home’s breaker box or electrical panel are in the ON position. Make sure it’s in the ON position. If the system is set for cooling, the blower motor should be running. If not, check to make sure your indoor unit switch is in the ON position. If you have one-inch-thick furnace filters, a once-a-month change is recommended. If you don’t change it, the filter will eventually block the proper airflow and cause your outdoor air conditioner unit to shut down. Return air grilles are larger and are located on a wall or the ceiling in newer homes. Older homes frequently have return air grilles on the floor. NOTE: If your system control has a “Constant ON” feature, you will not always feel warmth, even though air may be blowing. If it isn’t, your system won’t know to provide heating. Try turning the fan to ON using the fan switch on the control or thermostat to test for power to the furnace. If you have one-inch-thick furnace filters, a once-a-month change is recommended. If you don’t change it, the filter will block the proper airflow and strain your furnace. Return air grilles are larger and are located on a wall or the ceiling in newer homes. Older homes frequently have return air grilles on the floor.
NOTE: If your system control has a “Constant ON” feature, you will not always feel warmth, even though air may be blowing. Verify that the circuit breakers are ON or that fuses have not blown. If you must reset breakers or replace fuses, do so only once. Contact your Carrier expert for assistance if the breakers trip or the fuses blow a second time. Check air filters for accumulations of large particles. Check for blocked exhaust air grilles or ductwork. Keep grilles and ductwork open and unobstructed. Defrost time could be five to 20 minutes, depending on temperature and settings. With this information, the dealer will be able to correct any problems. Make sure that the condensate drain tube has a slight slope and is not kinked. Provide your model and serial number. With this information, the dealer will be able to correct any problems. Water likely means the support base has shifted since installation and is no longer level. Soak the core in warm water and mild soap for three hours and then rinse under warm (not hot) water. Use a vacuum cleaner to remove accumulated dust and then hand-wash in warm water. Filter life varies from home to home and is based on several factors, but most last from eight to 12 months. If your geothermal unit is connected to well water instead of a closed loop, we recommend the heat exchanger inside the unit be cleaned periodically to prevent the buildup of minerals that can reduce system performance. We have no relationship with advertisers, products, or services discussed at this website. We also provide links to the manufacturer's current model lists and literature. Syracuse, N.Y. 13221 USA. Tel. Also see Carrier Data Tag Decoding under the letter C at DATA TAGS on AIR CONDITIONERS Mr. Hankey is a past chairman of the ASHI Technical Committee and the ASHI Standards Committee. Mr. Hankey serves as co-chairman of ASHI legislative committee, and has served in other ASHI professional and leadership roles.
Alan Carson is a past president of ASHI, the American Society of Home Inspectors. Carson Dunlop Associates' provides extensive home inspection education and report writing material. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. InspectAPedia.com editor Daniel Friedman is a contributing author. Or choose the The HOME REFERENCE eBook for PCs, Macs, Kindle, iPad, iPhone, or Android Smart Phones. Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. SAFETY CONSIDERATIONS Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause death, personal injury, or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing. Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and current editions of the National Electrical Code ( NEC ) NFPA 70. In Canada, refer to current editions of the Canadian electrical code CSA 22.1. Recognize safety information. Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death.
WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. ELECTRICALSHOCK HAZARD Failure to follow this warning could result in personal injury or death. Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label. DO NOT operate the unit without a filter or with grille removed. Refer to Fig. 3 and Fig. 4 for minimum required clearances. Piping: Piping and insulation is field supplied. PiDinu Lenuths The minimum length between the indoor and outdoor units is 10 fl (3 m). Refer to table 3 for the maximum lengths allowed. Pipe Sizes Refer to table 4 for pipe sizes. Condensate Drain Pipe Sizes Refer to table 5 for the required sizes.Refer to the Duct Free Spfits Long Line Guide. Metering Device The metering device(s) for these systems is a type B Accurator installed with the outdoor unit. One Accurator is required for the cooling only system and two are required for the heat pump systems. The Accurators are supplied with the outdoor unit. However, since the same outdoor unit can be matched with multiple indoor units, the correct Accurator must be selected. Refer to Table 7 for the correct Accurator size. Control Wiring Thermostat wires should be used for control wiring between the indoor and outdoor units. A two conductor cable is required for the cooling only units and a seven conductor cable is required on heat pumps. 18 AWG is recommended for any length up to 50 ft (15.2 m). 16 AWG is recommended for lengths between 50 and 200 ft (15.2 and 61.0 m). User Interface The indoor unit is supplied with a wireless remote control.
Identify what accessories, if any, are required for the application at hand and consult the separate installation instructions for the accessories. Some of the accessories, especially on the indoor units, can be installed much easier if planned ahead.If there is any dam- age, forward claim papers directly to the transportation company. Manufacturer is not responsible for damage in- curred in transit. 3. Inspect Parts Supplied With Units - Check all items against parts list (see Table 1). If any items are missing, noti- fy your distributor or Carrier office. To prevent loss or damage, leave all parts in original packages until installa- tion.If this is not possible and constant wind winds above 25 mph are expected, use accessory wind baftle. See installation instructions provided with accessory kit. Wind baftles should also be used on all units with accessory low ambient temperature control. Mounting on Ground 1. Mount unit on a solid level concrete pad. 2. If a heat pump is being installed, use a field- provided snow stand or ice rack where prolonged subfreezing temperatures or heavy snow occurs. 3. Position unit so water or ice from roof does not fall directly onto unit. 4. On cooling only units, an accessory stacking kit can be used when units are to be stacked. See installation instructions provided with the accessory kit. Be sure unit panels are securely in place prior to rigging. 1. Rig the unit. Keep the unit upright and lift using a sling. Use cardboard or padding under the sling, and spreader bars to prevent sling damage to the unit. See Fig 16. See Fig. 2 for center of gravity reference 2. Mount unit on a solid concrete pad or platform. 3. Isolate unit and piping from structure 4. If a heat pump is being installed, use a field- provided snow stand or ice rack where prolonged subfreezing temperatures or heavy snow occurs. 5. On cooling only units, an accessory stacking kit can be used when units are to be stacked.
SLING SLING PADDING COMPRESSOR END CENTER OF GRAVITY A08362 Fig. 15 - Drain Hose and Cap Location NOTE: If the condensate pump accessory is to be used, the drain hose can be cut to provide space for the space for the condensate pump reservoir in the back of the unit. The reservoir must be installed at this time. Please refer to installation instructions provided with the condensate pump accessory. 5. Place unit on a clean surface until you are ready to connect the piping and wiring. Fig. 16 - Lifting Unit with Sling A07396 Complete Outdoor Refrigerant Piping Connec- tions Follow the following general guidelines: 1. Use refrigerant grade field - supplied tubing. If any section of pipe is buried, there nmst be a 6 in. (152.4 ram) vertical rise to the valve connections on the outdoor unit. If more than the recommended length is buried, refrigerant may nfigrate to cooler, buried section during extended periods of system shutdown. This causes refrigerant slugging and could possibly damage the compressor at start-up. When more than 80 ft (24.4 m) of interconnecting tubing is used, consult the Duct-Free Split System Long Line Application Guide for required accessories. 3. Insulate both lines. Leave some slack in refrigerant tubes between structure and out- door unit to absorb vibration. NOTE: A fusible plug is located in unit suction line; do not cap this plug. If local codes require additional safety devices, install as directed. A sweat connection is required at the suction valve and flare connection is required for the nfixed phase line, 6. Insulate any exposed areas between the line set and the li- quid valve. Failure to follow this caution may result in equipment damage or improper operation.The unit cabinet must have an uninterrupted or unbroken ground to minimize personal iniury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes.
UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. Unit failure as a result of operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation could void any applicable Carrier warranty. ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Before performing service or maintenance, be sure indoor unit main power switch is turned OFF and indoor blower has stopped. Power Wiring 1. Mount outdoor power disconnect. The unit is factory wired for the voltage shown on the unit nameplate. The fused dis- connect switch nmst be provided within sight of the unit, readily accessible, but out of reach of children. Provisions for locking the disconnect switch on the OFF (open) posi- tion is advisable. The disconnect switch must comply with NEC and local codes. See Table 10. 2. Run power wiring from main box to disconnect per NEC and local codes. 3. Run power wiring from the disconnect switch to outdoor unit. The unit and power wiring must be grounded. Do not install unit in a system where voltage may fluctuate above or below permissible limits. Contact local power company for correction of improper line voltage. There nmy be more than 1 disconnect switch. NOTE: Use copper wire only between disconnect switch(es) and unit. NOTE: Install branch circuit disconnect of adequate size to handle unit starting current per NEC. Locate disconnect within sight of, and readily accessible from, unit, per section 440-14 of NEC. Some codes allow indoor unit to share disconnect with outdoor unit if disconnect can be locked; check local code before installing in this manner. If an extension pipe is required to facilitate this location, measure, fabricate and install the extension pipes to the in- door unit before hanging the unit on the mounting bracket. 3.
If piping connections are on the outside wall, pass the pipes (refrigerant and drain) through the wall sleeve and then hook the indoor unit body on top of the wall hanging brack- et. Support the unit away from the bottom using a tool or a piece of wood. If the wired remote or zone manger accessory are to be used, perform any modi- fications required at this time. Refer to the Accessory install- ation instructions). 6. Remove the control box cover and finish all indoor unit wiring connections as shown on the wiring diagram or in the accessory installation instructions. Replace the control box cover. 7. Fix the bottom part of the unit to the wall mounting bracket and push it carefully until the two bracket hooks fit into the marked places at the base of the unit until it snaps into place. See Fig. 29. 16 Press A and V to change the default value to the new value of (a) or (b). Remote Control Configuration Turn the unit off by pressing the IQL) button. Press and hold the A v and buttons for more than 5 seconds. Press A and V to change the default value to the new value of (a) or (b). NOTE: When 30 seconds have elapsed and no buttons have been pressed, the remote control will automatically exit the configuration menu and resume its normal operation. A wall mounted control or zone manager can be used to control a unit or multiple units. Wired Control If a wall mounted wired control is required the following steps should be performed at the same time the indoor control and power wiring are being connected: 1. Unplug the connector on J5. 2. Remove the wire harness from the wired control box 3. Plug one end of the wire harness into the J5 connector on the board 4. Route the other end of the wire harness to the back of the unit along the low voltage wiring 5. Connect the other end of the wire harness to the field sup- plied wiring between the indoor unit and the wired control as shown in wired control installation instructions and Fig. 31.
17 Water must flow steadily; if not, check the pipe slope or inspect for any pipe restrictions. 2. Make sure all wiring connections are correct and they are tight. 3. Field electrical power source must agree with unit name plate rating. 4. Check that all barriers, covers, and panels are in place. En- sure that the filters and return-air grilles on the indoor unit have been installed and that the discharge louvers are posi- tioned correctly. 5. All service valves must be closed. 6. On units with crankcase heaters, ensure belly-band heaters are tight around the compressor. Evacuate and Dehydrate the System UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. Never use the system compressor as a vacuum pump. Using Vacuum Pump 1. Completely tighten flare nuts A, B, C, D, connect manifold gage charge hose to a charge port of the low side service valve. (See Fig. 34.) 2. Connect charge hose to vacuum pump. 3. Fully open the low side of manifold gage. (See Fig. 35) 4. Start vacuum pump 5. Evacuate using either deep vacuum or triple evacuation method. 6. After evacuation is complete, fully close the low side of manifold gage and stop operation of vacuum pump. 7. The factory charge contained in the outdoor unit is good for up to 25 ft. (8 m) of line length. For refrigerant lines longer than 25 ft (8 m), add 0.3 oz. per foot of extra piping up to the maximum allowable length. 8. Disconnect charge hose from charge connection of the low side service valve. 9. Fully open service valves B and A. 10. Securely tighten caps of service valves. The deep vacuum method is the most liquid water. Z O ft. O m )ositive way of assuring a system is free of air and See Fig. 36) LEAK IN SYSTEM,VACUUM TIGHT TOO WET TIGHT DRY SYSTEM 1 23 4 567 MINUTES Fig. 36 - Deep Vacuum Graph A95424 20 Refer to Fig. 37 and proceed as follows: 1. Pump system down to 28 in.
Dur- ing this time, dry nitrogen will be able to diffuse throughout the system absorbing moisture. 5. Repeat this procedure as indicated in Fig. 37. System will then be free of any contaminants and water vapor. I EVACUATE I I BREAK VACUUM WITH DRY NITROGEN I r- -srq I EvAcUATE I IBREAK VACUUM WITH DRY NITROGEN I r- srq I EvAcUATE I I CHECK FOR TIGHT, DRY SYSTEM I (IF IT HOLDS DEEP VACUUM) I RELEASE CHARGE.TO SYSTEq A95425 Fig. 37 - Triple Evacuation Method To Start the Unit: 1. If the outdoor unit is equipped with a crankcase heater, turn on the indoor and outdoor disconnect switches to supply power the system 12 hours before starting the system. 2. Release charge into the system by opening (back-seating) liquid and suction line service valves. 3. Set the wireless remote control or wired remote control be- low ambient temperature. Operate the unit for 15 minutes. 4. Refer to Table 6 to determine if additional charge is re- quired. Also, if you have a long line application, refer to the Duct Free Long Line Application Guide to determine the additional charge that is required beyond 25 ft (7.6 m). 5. Calculate the total additional charge required and weigh in. 6. Charge should be added as liquid (not gas) slowly and care- fully to low side to avoid liquid slugging. 7. Start unit with operation test. In test mode the unit will run in cooling and heating (on heat pumps) regardless if there is demand or not. Set Unit in Test Mode Using Wireless Control Turn power on to the unit. Insert batteries in remote control. NOTE: When 30 seconds have elapsed and no buttons have been pressed, the remote control will automatically exit the test menu and resume its normal operation. Set Unit in Test Mode Using Wired Control There is a hidden service test mode that is initiated through a combination of button presses when the remote is off. During Service Test mode, all the icons are off. Service Test mode automatically times out after 30 minutes and the remote will operate normally.
Test Mode Sequence of Operation Once unit is in TEST MODE, all remote control messages are ignored except for a message to turn the unit OFF. Buzzer will beep twice. When in TEST MODE, the unit will operate as follows: 1. The unit Status (Green) and Timer (Yellow) LEDs will blink every 2 seconds GREEN YELLOW A09594 Fig. 38 - LED Display 2. Indoor fan will operate according to user - selected speed.Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. Wear safety glasses and gloves when handling refrigerant. Do not overcharge system - this can cause compressor flooding. All units are shipped with the refrigerant charge listed on nameplate, NOTE: Do not vent or depressurize unit refrigerant to atmosphere, Remove and recover refrigerant following accepted practices. Failure to follow this caution may result in equipment damage or improper operation. The unit coils hold only the factory-designated amount of refrigerant. Additional refrigerant may cause units to relieve pressure through the compressor internal pressure relief valve (indicated by a sudden rise of suction pressure) before suction pressure reaches 20 psig. If this occurs, shut off unit immediately then front-seat the suction valve and remove and recover excess refrigerant following accepted practices. 3. Start unit and run until suction pressure reaches 5 psig. 4. Shut unit off and front-seat suction valve. 5. Depressurize low side of unit and recover refrigerant fol- lowing accepted practices. Filter Drier Whenever the filter drier is exposed to the atmosphere it must be replaced. Only use factory specified liquid-line filter driers with rated working pressures less than 600 psig. NOTE: Do not install a suction-line filter drier in the mixed phase line. 22 Fault Code Once a failure occurs with the indoor unit in operation, the green LED on the indoor unit flashes at intervals of 0.5 seconds.
The fault code is deduced from the number of times the green LED flashes, blocking unit operation. Between one flash cycle and the next one, a pause of 3 seconds elapses.
Sensor Fault Compressor and Fan of the Outdoor Unit Will Not Start Compressor Will Not Start, But Out- door Fan is Operating Compressor Stops Due to Over-tem- perature Compressor Runs Continuously Frequent Ice-Build-Up on Outdoor Coil Discharge Pressure Too High Discharge Pressure Too Low Suction Pressure Too High Suction Pressure Too Low Outdoor Fan Cycling Due to Over- Temperature Protection Table 13 - Troubleshooting POSSIBLE CAUSE Unit not energized Main switch is set to OFF Main switch fuses are blown Compressor cycling protection is on Main power voltage is too low Electrical connections are too loose or are wrong Electrical connections of compressor are loose or wrong Compressor burnt out; seized or protection device on Wrong refrigerant charge in unit (excessive or low) or air or other non-condensable gasses in the circuit Main voltage is too high or too low Condenser coil obstructed Outdoor fan off Wrong indoor unit thermistors Refrigerant circuit clogged Reversing valve faulty on heat pump models Expansion device clogged or covered with ice Unit selected is too small for application require- ments Indoor temperature setting too low or too high Outdoor unit fan faulty Air or other non-condensable gasses in the cir- cuit Obstructions at air intake or dirty indoor unit filters Outdoor fan is stopped Outdoor coil dirty or obstructed Condenser fan faulty Indoor temperature setting too low or too high Air or other non-condensable gasses in the cir- cuit Indoor temperature setting too high or too low Outdoor coil dirty or obstructed Indoor unit air filter dirty Indoor temperature setting too high or too low Reversing valve faulty or internal leak Indoor temperature setting too high or too low Evaporator coil covered with ice Expansion device or suction line clogged Outdoor fan does not stop during defrost periods Electrical connection loose Fan motor burn out Fan bearing seized Expansion device clogged or covered with ice SOLUTION Check the main power connection.
Check and put it to ON position. Replace fuses. Wait for 3 minutes. Check and set to the correct voltage. Check and tighten or correct connections. Check and tighten or repair compressor. Check for the cause and replace compressor if neces- sary. Drain refrigerant, evacuate and recharge, CAUTION: Do not vent refrigerant to the atmosphere; use refrigerant recovery equipment. Check voltage setting and adjust if necessary. Remove obstruction. Check cause and resume operation or repair. Replace thermistors. Check and remove obstructions. Replace reversing valve. Contact a qualified service technician for a system evalu- ation. Check temperature setting. Replace outdoor fan. Check cause and repair. Clean or remove obstructions. Replace condenser fan. Clean filter. Check temperature setting. Air circulation on the evaporator not sufficient; check and repair. Check and repair. Check electrical parts. Check connections. Replace. Check and repair. Drain refrigerant, evacuate and replace. CAUTION: Do not vent refrigerant to the atmosphere; use refrigerant recovery equipment. 23. Read these instructions thor- oughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety information. Understand the signal words DANGER, WARNING, and CAU- TION. DAN- GER identifies the most serious hazards which will result in severe personal injury or death. Some R-22 service equipment may not be acceptable. Check with your distributor. INSTALLATION RECOMMENDATIONS NOTE: In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment. i. Locate unit away from windows, patios, decks, etc.OD for all residential applications including long line. IMPORTANT: Always install the factory-supplied Puron heat pump (bi-flow) liquid-line filter drier.
If replacing the filter drier, refer to Product Data Digest for appropriate part number. Obtain replacement filter driers from your distributor or branch. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 101 Catalog No 533-80082 Printed in U.S.A. Form 38YXA-4SI Pg 1 2-03 Replaces: 38YXA-3Sl Consult the Application Guideline and Service Manual for Residential Split-System Air Conditioners and Heat Pumps using Puron Refiigerant to obtain required unit changes for specific applications and for R-22 retrofit. Step 1--Check Equipment and Job Site UNPACK UNIT Move to final location. Remove carton taking care not to damage unit. INSPECT EQUIPMENT File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner panel. It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications. Step 2--Install on a Solid, Level Mounting Pad If conditions or local codes reqnire the unit be attached to pact, tie down bolts should be used and fastened through knockouts provided in unit base pan. Refer to unit mounting patteru in Fig. 3 to determine base pan size and knockout hole location. On rooftop applications, mount on level platform or frame. Place unit above a load-bearing wall and isolate unit and tubing set fi'om structure. Arrange supporting members to adequately support unit and minimize transmission of vibration to building. Consult local codes goveruing rooftop applications. Do not allow POE lubricant to come into contact with roofing materiah POE may deteriorate certain types of synthetic roofing. Roof mounted units exposed to winds above 5 mph may require wind baffles. Consult the Application Guideline and Service Manual for Residential Split-System Air Conditioners and Heat Pumps using Puron Refrigerant for wind baffle construction.