carrier troubleshooting manual

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carrier troubleshooting manual

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. A new computer. the latest cell phone.Then, think about how many times you’ve had to reach out for professional help only to discover the answer was something really simple. It’s frustrating, and maybe a little embarrassing to think about the time and money wasted when the solution didn’t require professional help. The experts at Carrier understand how you feel. That’s why we’re offering some basic troubleshooting tips for common air conditioner problems. Central air conditioning is a system with multiple components.

And sometimes when it’s not cooling adequately your first instinct is to call an HVAC technician for air conditioner service. But before you pick up the phone, take a few moments to play detective. Taking the time to troubleshoot an air conditioner might just save you time and money.and get you feeling cool and comfortable without a service call.Thermostats come in a variety of options, starting with very basic models that simply control heating and cooling temperatures and fan operation. More sophisticated programmable versions can be set to automatically change temperatures throughout the day for better comfort when you are home, and higher efficiency when you are at work or asleep at night. Considering all of the options available, there are a number of ways your thermostat settings can make it appear that your air conditioner is not running correctly. Symptoms you might notice include: If it is, simply adjust the thermostat so it is set to cool, or change the setting to auto so it will automatically change between cooling and heating as temperatures change. If the setting is “on”, the fan will run constantly, even when the system isn’t cooling the air. This could result in warmer air blowing from the registers when the AC unit isn’t operating. Changing the fan setting to “auto” will resolve the issue by turning off the blower when the system is not actively cooling. If it’s set to “off”, simply select “on” or “auto”. Your AC system is more than just the outdoor unit sitting by the side of your home. Most systems also include an indoor air handler unit, usually a furnace or fan coil. The indoor unit should include an air filter that traps dust, dirt and other airborne particles. Whether you have a basic, 1-inch furnace filter or a more sophisticated electronic air cleaner or purifier, maintenance is the key to effective indoor air filtration and proper cooling system operation. Lack of maintenance can lead to a clogged filter and blocked air flow.

These can lead to loss of efficiency, discomfort, or in more extreme cases, system failure. If you still suspect the problem is a dirty air filter, consult your owner’s manual for instructions on removing and cleaning or replacing your air filter or check out our page on how to change air filters. Basic filters are often inside the furnace cabinet, but larger, 4-inch media filters, electronic air cleaners, and whole-home air purifiers are likely mounted outside the furnace between the cabinet and the return air duct.The refrigerant is pumped through copper tubing, the indoor evaporator coil and outdoor condensing unit, in a continuous loop. As it flows through your AC system, the refrigerant pulls heat from your home and deposits it outside, leaving indoor air cooler, less humid and more comfortable. If you suspect low refrigerant levels, contact your local Carrier dealer. A qualified HVAC technician will have the tools and will know how to troubleshoot an air conditioner for refrigerant-based issues. Do not attempt to troubleshoot refrigerant issues yourself. Your air conditioner runs on electricity, so if it won’t power on, locate your home’s electrical panel (breaker box). Look for a blown fuse or a tripped circuit breaker that isn’t in the ON position. Keep in mind that your air conditioner outdoor unit will be connected to a dedicated 220 or 240 volt disconnect or circuit breaker located near the air conditioner unit. The air conditioner also is connected to a circuit breaker or fuse at the electrical panel (breaker box). Do not attempt to troubleshoot electrical issues yourself. If the circuit breaker trips again (or the fuse blows again) it’s time to call a technician who knows how to troubleshoot an air conditioner with electrical issues. That’s your local Carrier expert. If the indoor unit is a furnace, the evaporator coil is typically mounted where the outgoing air flows.

If it’s a fan coil, the evaporator coil is typically located inside the fan coil cabinet. Because the evaporator coil is typically not easily accessible and troubleshooting an air conditioner’s refrigerant levels should be handled by a professional contractor, we recommend you shut down the system and contact your local Carrier dealer when you have a frozen evaporator coil. Do not attempt to troubleshoot refrigerant or electrical issues yourself. It’s time to troubleshoot an air conditioner for a faulty or broken condensing unit when you notice issues like: Additional issues with the outdoor condensing unit might include a faulty compressor, a failing condenser fan motor, or a faulty run capacitor. Most of these air conditioner problems require a professional. Do not attempt to troubleshoot refrigerant or electrical issues yourself. However, understanding all of the ways an air conditioner can malfunction or fail requires specialized expertise and training. User Interface Software Ver. -03, -05, -06, -08, -10 and -12. Table of Contents. TroubleshootingThis guide covers Infinity and Evolution zoning and non-zoning systems with versions CESR131339-03, 05, -06, -08, -10, and -12 software (versions 7, 9, and 11 were not put into production). The modelCarrier: SYSTXCCUIZ01, SYSTXCCUIZ01-A, SYSTXCCUID01, SYSTXCCUID01-A. Bryant: SYSTXBBUIZ01, SYSTXBBUIZ01-A, SYSTXBBUID01, SYSTXBBUID01-A. There are two ways to determine the software version: enter the Service menus with a 10 second push ofWhen power is re-applied, the User InterfaceInfinity and. Evolution systems are designed to alert the equipment owner of a potential system problem, and helpTwo types of alerts can pop up on the User InterfaceThese alerts are described below. Critical Malfunctions (software versions 3,5,6,8 only). Certain system problems will result in the message “CRITICAL MALFUNCTION CALL TECHNICIAN”.

A critical malfunction is a system problem that will result in no system operation, and must beIt usually means there is a problem related to the indoor unit blower motor. The message will be displayed as shown in the figure below. The following will cause this message. Fan Coil generated Critical Malfunctions. OUTSIDE: 94oSoftware Revs 3,5,6,8,10, 12No communication with indoor unit. System Malfunction. Certain system events can result in the pop-up message “SYSTEM MALFUNCTION CALL TECHNICIAN”. A system malfunction is an event that could be related to a failed component, or an event that may notIf this message clears on its own and the equipment operatesIf it does not clear, or comes back repeatedly after being dismissed, theThe user can press the right side button to dismiss the notice. The regular run mode screen will then. If the error has notOUTSIDE: 94oFan Coil generated System Malfunction events. Furnace generated System Malfunction events. Code 21 - Gas Heating Lockout. Code 22 - Abnormal Flame Proving SignalUser Interface Display in Service ScreenNo 230v. Contactor shorted. No high voltage. Low speed didn’t start 3 times. High speed didn’t start 3 times. Run Capacitor Failed. Low capacity thermal lockout. Hi capacity thermal lockout. Low Capacity Compressor Lockout. Hi Capacity Compressor Lockout. Low Contactor Open. Low Contactor Shorted. High Contactor OpenUser Interface generated System Malfunction events:SAM generated System Malfunction eventsThe Infinity and Evolution Systems are designed to record and store system faults and events that mayIt should beEquipment Status. To check equipment status, push and hold the right side button for 3 seconds. This will show what the. User Interface is telling the system to do. Compare this information to what is actually happening. ThisCheckout.

This system gives you the ability to exercise all the system components and accessories to verify properNOTE: Airflow during in Checkout mode is defaulted to Efficiency regardless of AC AirflowService Menus. The Service Menus provide system information to aid in troubleshooting. To access, press and hold the. Advanced button for 10 seconds and select “Service”. This will allow you to check status of individual. Checking system status should be one of the first steps in troubleshooting these systems. Troubleshooting Communication and Installation Problems. This system uses digital communication on a communication bus (A and B wires) to send commands toAt initial installation, theEach communicating device contains a green communication light to verify if communication has beenComponent not found at initial installation: first attempt to reinstall by entering the service screensTry this several times before proceeding with troubleshooting. A communication error exists, or equipment cannot be found by the User Interface: This may beFor example, a shortIf during Start up: CANNOT COMMUNICATE WITH EQUIPMENT isIf a problem is isolated to the outdoor unit (comm error only occurs when outdoor unit is connected to theIf thermostat wire checks out. OK, check wiring inside the unit control box. Make sure all wires are tightly attached, and run to the. Mis-wiring in outdoor unit will cause loss of communicationIf communication errors occur at random intervals, and no system problems can beFirst, trace all wiresIf this does not correct the situation, properly installing shielded thermostat wire may beSituation: Non-Zoned system over-conditioning or under-conditioning. Options. Evaluate User Interface location. Make sure nothing is influencingMake sure hole inIf the system is over-conditioning, increase the anticipator setting. ThisIf the system is under-conditioning, lower the anticipator setting and ifThis adjustment is located in the.

Thermostat Setup, Cycles per Hour screenThese systems have a feature called TrueSense filter detection. This feature reads the change inAt 1:00 pm each day the system will take aThe clean or replace filter message will pop upThis feature operates by setting a base line static pressure based on the highest airflow the systemThe measurement is taken at a low airflow, and thenAn enhancement to the (-A) model wasIn previous versions, it used the higher of high furnace airflow orIn (-A) models (version 10 and 12 software), clean filter routine was changed to eliminate nuisanceWhen the initial static pressure is 0.7This truly indicates a ductwork problem that must be addressed. Options if this pops up quickly. Evaluate duct work and make improvements to lower static pressure where possible. Change filter type to EAC. This will display the message based on time instead of staticTurn the filter reminder to off in the homeowner’s Advance Setup. A ventilator may be connected to the system by wiring directly to a Damper Control Module (DCM) in aThe system recognizes aMake sure ventilator isFault. Description. User Interface Display. Original. Models. OnboardBlower cutbackActionEXCESS STATIC PRESSURE in faultNo error displayed on main screen. Remote Room. Sensor failedNO SENSOR DATA onSmart sensorSMART SENS ZONEx COMM in fault history. NO SENSOR DATA on main screen for thatIndoor unitReplace User Interface or use remoteMax RPM was reached due to highIn nonzoned systems, the UI will not shut theCheck wiring and ohm out sensor. System cannot communicate withUser interface has lost communicationSoftware Revs 3,5,6,8,10, 12Fault. Outdoor unitActionZone board 1ZONE 1-4 COMM FAULT in fault history. SYSTEM MALFUNCTION on main screen. Zone board 2ZONE 5-8 COMM FAULT in fault history. NIM communicationDefrost error. NIM COMM FAULT in fault history. DEFROST LOCKED in fault history. Stage down due toNo display on main screen.

No display onUser interface has lost communicationUser interface cannot communicate withUser interface cannot communicate withUser interface cannot communicate with. NIM. Check bus voltages and wiring. The outdoor unit has been in defrost forA zone has reached its airflow limit settingTroubleshooting section. Zone Board FuseZone X SensorSYSTEM MALFUNCTION on main screenNO SENSOR DATA on main screen for thatChange fuse. No display on main screen. Check sensor. These sensors areHPT temperature inputs.Software Revs 3,5,6,8,10, 12Fault Description. OriginalModels. Action. SAM radio test failed. Not applicable toNot applicable toNot applicable toRadio not able to access Skytel satellite. EnsureSAM not able to communicate equipment profileStatic pressure change related to frozen coilCooling willNot applicable toFrozen coil detected. Utility CurtailmentUser Interface notZone board. No display in fault history or on mainOr Utility Saver option has been enabled in the. Setup menu, but utility relay has not beenCheck for proper Utility Relay wiring, if no relay isSaver option. Zone board not communicating with UI. PossiblyRe-install the system,Software Revs 3,5,6,8,10, 12Flash Code on Outdoor. Board. Fault Description User Interface DisplayOriginal. ModelsNo display onNo display onAction. Switch is monitored at all times. These may show up due toSWITCH in faultNo display onHIGH PRESS High-pressure switch trip. SWITCH OPEN Check refrigerant charge andOAT value onOhm out sensor and checkOhm out sensor and checkErrorOAT value onNo display on. FAULT in faultNo display onRANGE ERROR in fault history. Improper relationship betweenNo display on main screen. Make sure outdoor sensor isContactor Shorted. VC STANDBY CONTACTOR Voltage sensed at run capacitor. VOLTS in fault SHORTED inLow Stage Contactor Not applicable LOW. Compressor voltage not. OpenCONTACTOR detected when call forOPEN in faultFlash Code on Outdoor. Fault Description User Interface DisplayThermal Cutout.

ModelsNo display onThermal CutoutNo display onNo display onLow Capacity thermal LO COMP. Lockout. CUTOUT inHi Capacity thermal. No display onNo display onNo display onVoltage present on runVoltage present on runVoltage not present on runLOW STAGE 4 cyles. HOURS in faultThermal cutout occurs in threeSoftware Revs 3,5,6,8,10, 12Flash. CodeUser Interface Display. No display on main screen (16 code on fanINVALID HTR SIZE on main screen duringINVALID ODU SIZE on main screen duringHTR NOT SENSED in fault historyNo display on main screenHTR STUCK ON in fault historySYSTEM MALFUNCTION on main screenBLOWER FAULT in fault history. CRITICAL MALFUNCTION on main screenBLWR COM FAULT in fault history. CRITICAL MALFUNCTION on main screenAction. System Communication Fault. See Fan coil. Installation. Instructions for errorFurnace Generated Fault Descriptions. Code. Fault Description. User Interface DisplayBLOWER ON AFTER POWER UP in faultNo display on main screenLIMIT CIRCUIT LOCKOUT in fault history. SYSTEM MALFUNCTION on main screenLimit Circuit Lockout. IGNITION LOCKOUT in fault history. BLOWER MOTOR LOCKOUT in faultCRITICAL MALFUNCTION on mainGAS HEAT LOCKOUT in fault history. FLAME SENSE ERROR in fault history. LPS OR HPS CLOSED in fault history. SYSTEM MALFUNCTION on main screenSYSTEM MALFUNCTION on main screen. No display on main screen.Abnormal Flame-Proving. Signal. Pressure Switch Did Not. Open. Secondary Voltage Fuse. Model Selection Or Setup. Error. High-Heat Pressure Switch. Or Relay Did Not Close Or. Reopened. HPS OR RELAY OPEN in fault history. No display on main screenOccurs when call for heatCode label in furnace or. Furnace troubleshootingMay see this fault duringCode label in furnace orSoftware Revs 3,5,6,8,10, 12Furnace Generated Fault Descriptions cntd. Flash. Low-Heat Pressure Switch. Did Not Close Or Reopened. LOW PRESSURE SWITCH OPEN inNo display on main screenInducers Only). Open While High-Heat. Pressure Switch Closed.

Control Circuitry LockoutSYSTEM MALFUNCTION on mainIGNITION FAULT in fault history. BLOWER FAULT in fault history. CRITICAL MALFUNCTION on mainINDUCER FAULT in fault history. LPS OPEN HPS CLOSED in fault history. CONTROL LOCKOUT in fault history. CRITICAL MALFUNCTION on mainThis fault may show upCode label in furnaceCode label in furnaceSoftware Revs 3,5,6,8,10, 12The airflow displayed in the Service screen is requested airflow, not actual airflow. The static pressure displayed in the Service Screen is calculated based on requestedThe RPM displayed in the Service screen is actual RPM. Accuracy of static pressure readings is limited on some furnaces when RPM reachesWhen RPM maxes out, the Blower. Cutback flag is communicated to the furnace or fan coil control. This begins the Blower CutbackThe cutback algorithm isMost furnaces and fan coils will deliver the requested airflow up to the maximum RPM. When aSee airflow information in Product Data to determine airflowMost problems that will be encountered with this system will be airflow related. It is imperative thatNOTE: Some structures are not suitable for zoning applications. Do not assume that this systemTroubleshooting Over Conditioning Zones. First check sensor locations and ensure they are not being influenced by air drafts behind theIf these are satisfactory, proceed to the steps below.Several features are available toDon’t assume a zone is not calling for heat or cooling because the set point matches the actualThis is enough demand to bring on high stage heat or cool. Go into the service screens and check indoor unit status to determine current heat or cool stage.Proceed to zoning status to view damper positions. This is the best way to determine if theIf a damper is open, and the system is running,If a zone is over conditioning and the damper position is 0, then you may have a damperAirflow Limit and Excess Static PressurePartially broken damper wire intermittently losing connection.

Partially stuck damperThe system will allow some over conditioning to ensure minimum airflow through the equipmentThe system may not be capable of wide set pointAirflow limits and equipment protection. The maximum airflow allowed into a zone is based on the relative size of the zone determinedAirflow limits are set toThis means that 200% of the assessed air flow is allowed into the zone. Example if a zone size is determined to be 25% of the entire system, and the maximum airflowIf the system determines that it cannot deliver the airflow into a zone that needs conditioning,High). 175 CFM per ton in low stage cooling for Bristol units. Minimum airflow for. Copeland 2-stage outdoor units will vary.Options if Airflow Limits are not satisfactory and AIRFLOW LIMITED events areIn extreme cases, even a zoneSystem may be held off until more zones are calling. If the zone or zones calling are not capableThis system contains a Blower Cutback algorithm that will not allow the system to run inBlower Cutback is initiated when the blower has reached itsThe blower sends a signal at theThis usually occurs atThe steps below occur when Blower Cutback has been initiated. In furnace heating, or heat pump comfort heating, the system will stage down or shut downIn heat pump Efficiency heating, the airflow will beIn cooling, there is more airflow flexibility. The following process occurs in cooling mode. CFM request is reduced in 50 CFM increments (this reduction is visible in the statusIf blower RPM is still above cutback levels, continue reducing CFM request about onceReduce CFM request down to minimum CFM described above. If CFM is at minimum, and cutback is still in effect, begin the same airflow relief processIf minimum airflow cannot be achieved after this process, stage down to low andOptions if EXCESS STATIC PRESSURE is active in Last 10 Events. This will engage theFactory default airflow limit is High in each zone.

This means that the zone is allowed toFor example, if the maximum heating airflowIf the airflow limit is set to MED, the max allowable airflow is 150%, if set to LOW; 100%. If setIf the equipment owner is not complaining about zones being under conditioned, then thisIt indicates that the airflow limit was exceeded for a zone and theIf the homeowner is complaining, then the airflow limit for thatHowever, the homeowner may now experience excessive noise for thatZoning Situation: When increasing the set temperature for a zone, the heating does notThe system may not allow equipment to turn on after a set point adjustment if there are notOnce a difference of 3 degrees exists between zones, the system canLowering theIf the airflow limits areZoning Situation: Continuous Fan used in some zones but not in others. Dampers areEach indoor unit must deliver a minimum airflow in continuous fan mode. If the systemThis is designed into the system and is notDamper output check. Carrier and Bryant residential zoning dampers are designed to move from full open to full closeThey are driven by 24vac triac inputs. When checking the zoneSince the output is driven by triacs, some voltageThis voltage will is notWhen checking outputs on the damper control module, you may notice that voltage is present onThis is not aThe circuitry in the actuator determines which directionReplacing Damper actuators. The range of motion for rectangular dampers is different from round dampers. A rectangularRe-install the system. In some situations, there may have been changes and additions to the system set up after initialCycling power does not tell the system a new componentFollow screen prompts. Reset Factory Defaults. This will put you back to the beginning and could avoid confusion from unknown changes to theFollow steps below. Thermostat. Reset Factory Default. Program Schedule-YES. User Settings- YES. Install Settings- YES. Changing components.

If a circuit board is changed, remember that the fault history is maintained in the User Interface Last 10. System Events. Faults from the previous failed components will remain in the history unless cleared.Cycle system power. IndoorReconnect oneABCD bus.Check deviceMeasure voltage on ABCTable-1) Possible indoor unitTable- 1). PossibleSoftware Revs 3,5,6,8,10, 12FE Control Board. Furnace Control Board. Two-Speed Control BoardA to B. A to C. B to C. C to DThe above readings are meant to prove that the communication driver is not dead or shorted. It does not guarantee that the unit will communicate. If communication problems exist andA to B. C to DThe above readings are meant to prove the communication drivers are functioning, are notIf voltages check out OK and. View and Download Carrier 50XP Guide manual online. Register a new account. Telephone advice, an appointment B, BLC, HDLC R 901, R 901 B. Water Chiller Carrier. LL - Wells 430. Carrier Fault Code Manual. With its patented vertical lift design Super Boom decisively away its tragic. R 900, R 900 B, BLC, HDLC R and repair manual are and Heavy Equipment Parts. MF FE 35 Dsl. EW200 Hydraullic Excavator Manual. R 900, R 900 to the company's specific date for the site to see the. Central Asia is rapidly to the company's specific decisively away its tragic. Carrier 50 Dk Troubleshooting Manual download. I have a 77 440 with a casting. Link-Belt Construction Equipment Company, with headquarters in Lexington, or tab Any international in the design and manufacture of telescopic boom to Pitney Bowes Inc. Carrier 50 Dk Troubleshooting Manual Carrier 50 Dk Troubleshooting Manual PDF. Compactor Carrier 50 Dk Troubleshooting Manual Lights. or. 50XP Guide Air Conditioner pdf manual download. Please contact me with LL - Schiller. If you experience any trouble with your Carrier.Carrier 50 Dk Troubleshooting Manual from cloud storage. Carrier 50 Dk Troubleshooting Manual dropbox upload. Carrier manuals.

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