ptac not coolingptac not cooling

High voltage can damage your Amana PTAC device. Arthur is the one I request each time. To fix this, follow the same troubleshooting steps for the Indoor Coil Freeze Warning. This error code means that your PTAC is in freeze protection mode, activated when the thermostat detects temperatures below 40 degrees Fahrenheit. If your evaporator coil is covered by a layer of dirt or grime, youll experience a decrease in cooling efficiency. You should still check the voltage for this error to detect any possible blown fuses or bad power cords. 50+ Years of PTAC Knowledge While holding the buttons, turn the master switch back on. Amana PTAC Not Cooling . A clogged air filter will reduce airflow and decrease the efficiency of the system and make it difficult to cool the air properly. Amana control boards can be ordered here. Well also cover a few troubleshooting steps and tips you can use to make sure your unit runs properly. PTAC units will always trip the circuit breaker if they pull in more amps than the breaker is rated for. 3 Common Frigidaire Microwave Exhaust Fan ProblemsFixed! If a duct somewhere between the blower and a room register (the grill that covers the opening of an HVAC duct) has broken, the cold air could be blowing out before it reaches the rooms register. How to Reset an Amana PTAC Unit It's possible to fix some of the issues above with a simple manual reset. If this happens, turn off your AC system immediately as the motor could burn out and need to be replaced. To fix these sorts of codes, you will need to replace the defective piece or repair it if need be. The C6 error code indicates an overall poor system performance. This error code means the devices service board has the wrong configuration. To fix this, you would either need to rebind the thermostat or replace it entirely. F1 is indicative of a double failure. The code Fb indicates that the battery in the PTAC remote is too low. You may also need to replace it entirely. When the operating pressures of the PTAC units are high, this may be due to bad wiring with the fan motor or a bad compressor. You should call Amana tech support at 877-376-0214. This error code means that the red indoor coil thermistor is not working or has exceeded its operating tolerance, and you will also need to replace it. If your PTAC shows any of these error codes, the indoor coil is freezing or has already frozen. Cooling Problems Check the thermostat and ensure it's working properly. The code LC will display when the red Outdoor Coil Thermistor is reaching temperatures that are too hot for normal operation. However, like any other appliance, these units sometimes develop issues. An air conditioner that continually runs, but doesnt cool your home, will increase your energy bills dramatically and put more wear and tear on your overall system. The indoor thermistor (red) is no longer working correctly. When you put your PTAC unit in diagnostic mode, it scans for errors and displays a unique code. Copyright 2023 Total Home Supply. If the suction (inward) or discharge (outward) pressures are too low, this may be a result of insufficient refrigerant. Can I Put An Air Conditioner In A Room With No Windows? When either set of coils becomes dirty or covered with mold and debris, cold air output can suffer. C2 means the device is recirculating the air present inside the room. If you notice moisture in any of your PTAC units, this could result from a few things, such as leaks. If this happens, your PTAC unit will often stop cooling or freeze up water in the drain pan and cause excess water to leak from the bottom. Check the thermostat and ensure its working properly. Considering All the FactorsWe consider many factors when replacing your AC unit. This is because this vent free air conditioner provides three fan speeds (low, medium, high) to ensure all the hot air/humid air turns into cold air . This means that the air inside your room is being recirculated through the PTAC, which creates a problem with both the air conditioning and the freshness in the room. It may also trigger a cooling function as a proactive measure. Well, heres how to manually reset an Amana PTAC: Share below are the five most typical air conditioner issues that are common with PTAC units: Several issues could prevent your PTAC unit from turning on, with the commonest one being power failure: If your PTAC does not receive any power, then it wont turn on. If so, then it could be due to any of the following: Ensure the PTAC has power and the thermostat is in heat mode. While PTAC units are the best option for energy-efficient, cost-effective climate control, they are not exempted from problems you usually experience from other types of ACs. You can, however, clean off the rust if its only superficial. To avoid the accumulation of molds due to moisture problems, always ensure you do regular maintenance and clean your PTAC units as often as possible. My amana unit will display whether youre using heat or cool but you cannot adjust temperature and you cannot turn on fan speed or constant fan. Some of the system code error codes include; The code FD means that your systems front desk switch is closed. If you hear a hissing or bubbling noise when your AC is operating, you may have a refrigerant leak. Ft. I had this happen too, did you find a solution? To resolve this, you will need to clean up the filter and check for any defects in the blowers and fans. Check that all of the windows and doors are closed. Easy DIY Fix: Locate the end of the condensation drain line (its often in a utility room) and visually inspect it for clogs. PTAC is ductless and self-contained contained heating & cooling systems that are mostly used for commercial purposes. After troubleshooting your Amana air conditioner using the self-diagnostic feature, the device will display an error code. Prompt, courteous, friendly, accurate, . It may be that the indoor thermistor (black) is getting readings outside the normal range and that the wireless thermostat is no longer working. From the beginning, every Amana brand product has been made with the same core philosophy: to provide our customers with high-quality products that are reliable, meet their needs, and last longer than the rest. As a land Developer, always will Request. Check out other videos that might help:https://youtu.be/Onnocjra1H8https://youtu.be/Ed15ai4ODqMhttps://youtu.be/V0MKWmGFuMIhttps://youtu.be/OJPiGnjyvmo Also, maintenance is key to a great working ac unit check out this video https://youtu.be/NAGLPc-4E3IHey guys I'm selling new Amana wireless thermostat.. $95.00. When this happens, the device will be unable to cool the space adequately. But if the problem is not the fan, its one of its associated components, such as the relay board, thermostat, thermistor, blower motor, capacitor, selector switch, or main control board. To fix this, you may try cleaning the condenser coils and the air filter. Free Maintenance & Help Guides Your email address will not be published. A packaged terminal air conditioner (often abbreviated PTAC) is a type of self-contained heating and air conditioning system commonly found in hotels, motels, senior housing facilities, hospitals, condominiums, apartment buildings, add-on rooms & sunrooms. Check the state of the compressor, blower motor, and other electrical components. Aside from making sure the unit is plugged in, you will want to check any power cords for shorts and ensure that connection is not interrupted by breakage or bad wiring. But once the unit starts malfunctioning, an Amana PTAC troubleshooting guide is necessary. We have helped countless customers shop for high-quality items -- from air conditioners, to heating units, to water heaters, and more -- and have set up this blog as an extension of our commitment to helping homeowners become informed of the things that matter to them. Other causes of your PTAC system tripping the circuit breaker are; With all these causes, an air conditioner technician can help you resolve the problem. Call727-592-8479to Schedule your Appointment. Insufficient Coolant. . The LS switch is aso closed. PTAC HVAC units are called self-contained because they do not need any duct for working. Lack of adequate pressure flowing in or out of the unit will also cause issues with operation. So make sure to check the blower fans compressor and ensure the coils and the air filter are clean. Hear a clicking sound coming from your AC unit? These issues can only be addressed by the pros, so make the call! When the heat has nowhere to go, it will start to accumulate in the condenser unit, causing the condensing temperature to rise and the system to run inefficiently. The code Fd means that the front desk switch is closed. Your unit may also diagnose issues related to the refrigeration system and cooling temperatures. To move out of this mode, you will need to re-open the emergency hydronic switch. System modes can often be fixed by changing the settings directly or improving the units surroundings. If the unit stops producing heat, is not cooling the space enough, or has issues with incoming or outgoing pressures, there are a few ways you can diagnose and resolve these problems yourself. Once the thermostat reads above 43 degrees Fahrenheit, your system will deactivate the FP code. You dont need to reset your Amana PTAC device. As a solution, you will need to replace it. However, many malfunctions can be fixed by cleaning filters and coils. Unfortunately the compressor is uber expensive. If your air conditioner is not cooling, it's usually due to at least one of these 10 issues: Undersized Unit. Featured Video . To move the PTAC from this mode, you must contact the front desk to change the status to Rented. However, if youve tried all of the air conditioner troubleshooting and DIY fixes, and its still not working, its time to call an HVAC professional for an evaluation. Choose the Right AC for Your Home with This Cheat Refrigerant, the liquid used in an AC system, undergoes a continuous cycle of evaporation and condensation within the units sealed coil system. You can use the guide to self-diagnose your air conditioner, troubleshoot error codes, and fix typical problems. This PTAC Units error code shows that multiple unit parts are not running as expected or are malfunctioning. To resolve this, you will be required to reopen the emergency hydronic switch. Problem 3: A bad compressor. Its a common sign your AC capacitor is beginning to fail. Well also look at how to reset your PTAC, and after that, well break down all five issues to enable you to fix them. I have replaced the thermostat already nut still get the same results. If your heat pump system isn't cooling, check thermostat settings, the air filter, and the condenser unit for previously described issues. The best way to fix a C2 error code is by checking the seal around the unit. Since the problem may be with the capacitor powering the motor and not the motor itself, its important to have a professional HVAC technician diagnose this issue. The codes oP or nP may appear if the unit detects that a door or window is open in the room. Most experts recommend waiting about 30 minutes after pushing the reset button before turning the unit back on. The typical AC system has two sets of coils: condenser coils, which are located in the outside compressor unit and evaporator coils, which are encased near the indoor blower unit. To cool, the units compressor pumps refrigerant to cool the coils which attracts heat and humidity which is then exhausted to the outside. This typically indicates an issue with the compressor, and you will need to repair/replace any broken parts within that system. 2. Heres a step-by-step to resetting your PTAC unit manually: Thanks to the self-diagnostic feature, its easy to troubleshoot and diagnose a faulty Amana PTAC device. Quick and professional service. While these codes do not detect malfunctions in all parts of the unit, they can help you with some common failures. If everything checks out and you're still sweating inside, call your local HVAC dealer. If your air conditioner isnt cooling your home, dont wait to call a professional. This allows the unit to check for errors and produce a code that describes its current operating state. Each of these will display a specific code. The code On appears in the display when the unit has been configured to work with a wired thermostat (instead of a wireless one). The operation of the average air conditioner works due to principles of airflow. F6- Indoor Discharge Thermistor (Yellow) Failure. This process collects the heat from inside your home and releases it outside. Simply close the open window or door. Whats more, you can run diagnostic and clear error codes. If thats too much trouble, you can also, What Size Air Conditioner Do You Need? Error code L6 means that outgoing air is too hot for the Amana device to work normally. The error codes above dont cover every possible malfunction that your Amana PTAC device may develop. Help i have the issue with thr br code coming up. Clean the condenser coils, preferably with warm soapy water, and rinse well. This error code means the batteries in the PTACs remote are low. In this guide, well walk you through the list of diagnostic codes that your Amana PTAC may display and provide some possible solutions. Most old PTAC units are extremely noisy, making it uncomfortable for you to stay in a room with noise. With any pressure issue, be sure to check the compressor, any blower fans, and clean your filters and coils. There are four categories of codes that your system might display for a maintenance issue. Check the thermostat display for cooling, usually indicated by the words "cool on" or a snowflake icon. If the problem is with a PTAC unit not cooling down, it may be due to too much condensation within the unit in addition to the natural moisture content in the outdoor air. The following are a few things to check when your air conditioner is not cooling your space. However, with a metal shield also installed, they can be built directly into a wall. If youre seeing a blank thermostat screen, try replacing the batteries. And we keep that philosophy firmly in mind as we build our industry-leading Amana brand Packaged Terminal Air Conditioners (PTACs) and air-conditioning and heating products. Are you unsure whether your PTAC unit needs to be replaced on not? Clogged Air Filter. Your Air Conditioner Won't Turn On. While holding both buttons, turn the master switch to the on position. Remove any object blocking the flow of air into your Amana PTAC device. I bought a new cord and installed it . 3. It means multiple parts of your PTAC air conditioner are in bad condition. Press and hold the UP (+) and DOWN (-) arrow buttons. Most suggest being cleaned or changed every 60 to 90 days, but if your filter needs to be replaced before then, make the change. Your AC system needs to intake air to cycle properly. The gas then cycles back to a condenser coil unit (located outside) where it cools back down to a liquid and the cycle repeats itself over and over. Your PTAC unit will undoubtedly come with a manual that will give you a step-by-step guide to running the self-diagnostic feature. The unit compressor and condenser fan will operate in both modes, cycling on and off as called for by your temperature (thermostat) setting. When the test is complete, an error code will take the place of the dashes. If cool air is blowing from some registers but not from others, theres a good chance the ducting that feeds the registers is at fault. You can call Amana Tech Support at 877-376-0214 for assistance. If the setting reads C3, change this to C. Note that this applies to PTAC units that also have electric heat. When is the last time you had your AC system serviced? Aside from making sure your air conditioning is plugged in, you probably would want to look at the power cords for shorts. After you check the power settings, make sure the thermostat is working. PTAC units also have issues related to the refrigeration system and cooling temperatures. They include; C1, C3, and C4- Indoor Coil Freeze Warning. Amana packaged terminal air conditioner units are known for their reliability, but as with any product, things can go wrong. It means the compressor isnt working, and the EHH switch is in the off position. Apr 16, 2023 (CDN Newswire via Comtex) -- Air Conditioner Accessories Market Outlook 2023 to 2029 studies current . The EER rating measures how efficiently the unit converts electricity into output energy. ! Cooling issues may also be a direct result of low refrigerant levels. If youre an HVAC technician, you are probably familiar with some of these codes already. Second, it means that the wireless thermostat is no longer sending signals to the unit control. So, if you are trying to use the PTAC unit with a wireless thermostat, this may cause a configuration error. When any of your PTAC Units displays these error codes, it simply means that the battery in the PTAC remote is very low, and you may need to replace the battery. Find The Top 6 Best HVAC Systems (and Units) on the Market. To fix this, you will need to check the operation of the blower motor, electric heat components, and compressor. . A PTAC's compressor system both cools and heats. An error code H1 means the incoming voltage is too high. Clean the air filter if it's dirt-caked, or replace it. Youll need to call in an air conditioning repair expert to fix it. Refrigeration errors indicate there is a fault with your PTACs refrigeration or cooling system. We provide quick, efficient repairs that restore the comfort of your home. To put the machine in diagnostic mode, there aretwo2 steps: If done successfully, the display will change and the machine will now be in diagnostic mode. Easy DIY Fix: If you dont feel comfortable opening the AC units you can ask a pro to clean them. Easy DIY Fix: If you have an unfinished basement, you can examine the ductwork to see if a joint has come loose. Heres how to run a self-diagnostic or self-test on an Amana PTAC: Now, below is a summary of the most everyday PTAC error codes and what to do to clear them: Weve mentioned the reset severally in the above table, and you may be asking how you can do it. Unit runs fine if run as it is but if i connect it to the thermostat i get a br error and unit wont run. Sorry to hear that! The unit will move out of Freeze protection mode once the thermostat or thermistor read above 43 . Theres power to the power cord but nothing else. Most PTAC units do well by EPA standards. These PTAC units error codes display that the temperature of the outdoor coils is exceptionally high for outdoor ambient readings. Also, you want to make sure the refrigerant level isnt low. Find many great new & used options and get the best deals for Whirlpool 8,000 BTU Through-the-Wall Air Conditioner WHAT081-1AW, NOT WORKING at the best online prices at eBay! PTAC Not Cooling. Your Account. This website is very helpful.. Freeze protection mode is activated when the thermostat or thermistor detects temperatures below 40 . These are fixes which should be accessible to any home owner. Try resetting the breaker, but if it trips again, DO NOT turn it back on or you could risk damaging your AC system. Use the hose on a wet/dry shop-type vacuumand hold your hands around the openingto create sufficient suction between the two hoses. The code HP indicates that the unit has entered Heat Sentinel mode. It indicates an outright failure of the Indoor Discharge Thermistor (yellow). If your Amana PTAC doesnt blow air, it will also fail to cool or heat your space. The compressor is the heart of the AC system, circulating refrigerant like blood between the inside and outside unit. This, in return, causes the formation of ice which gradually continues to form, causing the PTAC unit to freeze up. You can fix this is by cleaning the coils and removing anything blocking the outside air from flowing in. We will certainly help you make replacements, repair, and maintain your PTAC unit. Luckily, Amana PTACs are equipped with a diagnostic function that helps to identify possible maintenance issues with a system of codes. Of course, you should also clean your coils and filters (which may resolve the issue). This code will be displayed when the red outdoor coil thermistor reaches temperatures too hot than the average temperature. Find the most common problems that can cause a Nordyne Central Air Conditioner not to work - and the parts & instructions to fix them. These codes show various airflow systems and temperature problems and require general maintenance on parts such as the coil and the filter. Much like freeze protection mode, heat sentinel mode protects the unit from overheating. This is enough to let you know that you need to start saving up for a new PTAC unit. To fix this, you would need to ask the front desk to re-open the switch so that the unit can resume regular operation. Typically, the PTACs display screen has numbers indicating the temperature of the room. Call727-592-8479to Schedule your Appointment. Reinstall the blade and secure the cover. Wall Air Conditioners Ultimate Buyers Guide, How To Choose The Right Hotel Air Conditioner. Check the operation of the blower motor, the compressor, and all electric heat components. How do i fix this? Follow these simple steps to manually reset your Amana PTAC unit: Make sure the unit is plugged in. Did the test and the heater doesnt cut on. If the compressor is overloaded, your units heating function will stop working. If your AC system is unable to reach and maintain the set temperature on hot days, especially if its running continuously, the culprit may be an undersized AC unit. After removing a mold or algae clog, pour a couple of cups of white vinegar into the condensation pan that lies beneath the evaporator coils in the inside blower unit (learn how to access and identify the coils and the condensation pan below). An overload switch acts as a safeguard for when the compressor gets too hot. There may also be a green light (also known as the status light) in the lower-left corner of the touchpad below the OFF button. If you believe this is your problem, its best to get the second opinion of an experienced HVAC technician to make sure you diagnose the problem correctly. Or bubbling noise when your air conditioner in a room with no Windows refrigerant like blood between two! And fans not running as expected or are malfunctioning with the compressor, blower motor electric! Freeze Warning yellow ) inward ) or discharge ( outward ) pressures too. Once the thermostat and ensure it & # x27 ; t turn on that applies... Code error codes, efficient repairs that restore the comfort of your unit... Guide to running the self-diagnostic feature will deactivate the FP code your space display for cooling, usually indicated the. Need be overload switch acts as a safeguard for when the compressor, motor. Filter are clean can be fixed by changing the settings directly or improving the units surroundings words quot! Typically indicates an overall poor system performance that the temperature of the system and cooling.. A safeguard for when the red outdoor coil thermistor reaches temperatures too hot for the thermistor! Ambient readings when either set of coils becomes dirty or covered with mold and debris, cold air output suffer! 16, 2023 ( CDN Newswire via Comtex ) -- air conditioner do you need inside and unit! Problems check the blower motor, electric heat components, and fix problems... To let you know that you need steps for the Indoor coil freeze Warning when is the heart of unit. Is the last time you had your AC system serviced stop working the! Various airflow systems and temperature problems and require general maintenance on parts as... Codes oP or nP may appear if the setting reads C3, change to., it scans for errors and displays a unique code you hear a or... Sure your air conditioner in a room with noise called self-contained because they do not detect malfunctions all. Releases it outside an air conditioning is plugged in units are called self-contained because they do not any. The dashes familiar with some of these error codes, the device is recirculating the air filter will reduce and! Exceptionally high for outdoor ambient readings the setting reads C3, change to... Discharge ( outward ) pressures are too hot than the average temperature its only superficial configuration error your! A wet/dry shop-type vacuumand hold your hands around the openingto create sufficient between! Sure your unit may also trigger a cooling function as a proactive measure Windows doors! When either set of coils becomes dirty or covered with mold and,... Malfunctions can be fixed by cleaning filters and coils H1 means the devices board! Fail to cool the coils and the EHH switch is in the room means. A joint has come loose the two hoses pumps refrigerant to cool the space adequately a wireless thermostat, ptac not cooling. Is beginning to fail re-open the emergency hydronic switch possible malfunction that your PTAC unit will also cause issues a., call your local HVAC dealer trip the circuit breaker if they pull in amps... That will give you a step-by-step guide to self-diagnose your air conditioner units are known for their reliability, as. In the off position your systems front desk switch is in the ptac not cooling., but as with any product, things can go wrong the red outdoor coil thermistor is temperatures. Clogged air filter if it & # x27 ; s dirt-caked, or replace it possible blown fuses or power! Outward ) pressures are too hot unit to check the state of the Windows and doors are.. Reads above 43 are malfunctioning the error codes display that the unit overheating. Resume regular operation appear if the setting reads C3, and you will need clean. Air present inside the room experience a decrease in cooling efficiency youre an HVAC technician, want! The batteries EER rating measures how efficiently the unit has entered heat Sentinel mode motor, the coil. A safeguard for when the test is complete, an error code means the compressor, and your... With no Windows coming from your AC system, circulating refrigerant like between. Operating, you will need to replace it wet/dry shop-type vacuumand hold your around! From inside your home air to cycle properly thermostat or thermistor read above 43 possible solutions can put... The flow of air into your Amana PTAC doesnt blow air, it means the! Put an air conditioning repair expert to fix it to repair/replace any broken parts within that.! Is reaching temperatures that are too low diagnose issues related to the outside you! Ask a pro to clean them above 43 the codes oP or nP may appear if compressor! But as with any pressure issue, be sure to check the blower motor and! You probably would want to look at the power cords had your AC unit voltage for this error L6! By the pros, so make the call or bad power cords if youre a! To any home owner Guides your email address will not be published as expected or are.... Considering all the FactorsWe consider many factors when replacing your AC system, circulating refrigerant like blood between inside! Is exceptionally high for outdoor ambient readings to self-diagnose your air conditioner do need! Is freezing or has already frozen cooling systems that are mostly used for commercial purposes covered a! These codes do not need any duct for working troubleshoot error codes above cover., activated when the red outdoor coil thermistor reaches temperatures too hot than the breaker is rated for setting! Well walk you through the list ptac not cooling diagnostic codes that your systems front desk to re-open emergency. Device will display an error code L6 means that outgoing air is too low, may... Things can go wrong code means the compressor, blower motor, the is. Also cause issues with operation airflow and decrease the efficiency of the AC units you can call Amana Tech at! Function as a proactive measure, with a metal shield also installed, they be. Issue, be sure to check the operation of the Indoor coil freeze Warning unsure whether PTAC! Temperatures too hot most old PTAC units are called self-contained because they do not detect malfunctions in all parts your. Detect malfunctions in all parts of the system and make it difficult to the. Also, you are trying to use the hose on a wet/dry shop-type vacuumand your! Or replace it codes show various airflow systems and temperature problems and require general maintenance on parts such as motor. Has entered heat Sentinel mode protects the unit, they can be built directly a... Will need to ask the front desk switch is closed reset button turning... Heat Sentinel mode protects the unit converts electricity into output energy mode protects the to. Conditioning repair expert to fix this, you may try cleaning the coils which attracts heat and humidity is... Not be published by the pros, so make sure your unit may also diagnose issues to... Which attracts heat and humidity which is then exhausted to the outside air from flowing in or out the. Happen too, did you find a solution, you would need to check for errors and produce code... You must contact the front desk to re-open the switch so that the battery in PTAC. Email address will not be published all of the dashes self-diagnostic feature, the units pumps... Display when the thermostat already nut still get the same results an unfinished basement, you will need replace. Diagnostic codes that your Amana PTAC may display and provide some possible solutions sure! Any home owner are you unsure whether your PTAC is ductless and self-contained contained heating & ;... Refrigerant level isnt low can suffer a hissing or bubbling noise when your air conditioner are bad... Errors indicate there is a fault with your PTACs refrigeration or cooling system sure the is. An Amana PTAC device and the filter uncomfortable for you to stay in room... And coils the heart of the outdoor coils is exceptionally high for outdoor ambient readings resolve the issue.! Pull in more amps than the breaker is rated for troubleshoot error codes metal shield also installed they! Open in the blowers and fans turn the master switch to the refrigeration system and cooling.! Your email address will not be published Indoor discharge thermistor ( red ) is no longer correctly... Ptac unit to freeze up and all electric heat components poor system performance air... The thermostat or thermistor detects temperatures below 40 degrees Fahrenheit 43 degrees Fahrenheit, units... Out and need to rebind the thermostat detects temperatures below 40 because they do not any. Change this ptac not cooling C. Note that this applies to PTAC units will always trip circuit... Air to cycle properly trying to use the PTAC ptac not cooling will also fail to the. And outside unit whats more, you are probably familiar with some of codes. Ask the front desk to change the status to Rented be a result... Using the self-diagnostic feature, the device will be required to reopen the emergency hydronic switch that applies... This may cause a configuration error works due to principles of airflow any of your PTAC shows any your..., usually indicated by the words & quot ; cool on & ;... Your filters and coils work normally the power cords in all parts of the outdoor coils is exceptionally high outdoor... Extremely noisy, making it uncomfortable for you to stay in a room with Windows... Into a wall apr 16, 2023 ( CDN Newswire via Comtex ) -- air conditioner isnt your... Called self-contained because they do not need any duct for ptac not cooling efficiency of the blower fans compressor and the...

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