Common Reasons Ac Stops Working: Troubleshooting Tips To Beat The Heat
There are several common reasons why an AC may stop working. Some possible culprits include a faulty thermostat, clogged air filter, low refrigerant levels, electrical issues, or a malfunctioning compressor. Troubleshooting these problems can help resolve AC breakdowns and ensure a comfortable indoor environment during hot summer days.
Hot summer days are best spent indoors, basking in the cool comfort of air conditioning. But what happens when that refreshing blast of cool air suddenly stops? Don’t let an AC malfunction leave you sweating it out.
Understanding the common reasons why your air conditioning system may stop working can save you both time and money. Whether you’re a homeowner, renter, or small business owner, maintaining a comfortable indoor environment is crucial.
From a faulty thermostat to a clogged air filter, there are several potential culprits behind AC breakdowns. By troubleshooting these issues, you can beat the heat and ensure your AC keeps you cool when you need it most. In this article, we’ll explore the common reasons AC systems stop working and provide you with practical troubleshooting tips to keep your cool all summer long.
Get ready to enjoy a perfectly chilled space while waving goodbye to AC meltdowns.
- CLEAR LIGHT SEQUENCE: Outlet tester’s light sequence indicates correct/incorrect wiring, ensuring easy identification of wiring issues
- COMPLIANT WITH STANDARDS: Receptacle tester conforms to UL Std 1436 and is certified to CSA Std C22.2 #160, ensuring safety and quality
- WIDE OPERATING TEMPERATURE RANGE: Can be used in temperatures ranging from 32-degrees F to 140-degrees F (0-degrees C to 40-degrees C), providing versatility
- DURABLE AND TOUGH: Built to withstand a 6.6-foot (2m) drop, ensuring longevity and reliability in various working conditions
- VERSATILE VOLTAGE SUPPORT: Designed for use with 110/125V AC at 50/60Hz in 3-wire outlets, catering to common voltage requirements
- Amperage Rating 50A
- Main Circuit Breaker GFCB
- Wire Size #144 AWG
- Trip Type Common
- Interrupt Rating 10 kAIC
- Portable Travel Adapter: Compact size plug-in adapter only occupies 1 wall socket which is a nice outlet splitter; ideal for smart phones, tablets, laptop, kitchen appliances and other electronic accessories. 4 side outlets and USB ports allow you to charge up to 6 devices simultaneously; ideal for power adapters and bulky plugs.
- USB Plug with 3 Ports: 5V 3.0A shared rating; high-speed USB ports automatically detect charging devices and deliver optimal charging speed, up to 2.4A per port.
- Unique Cube Design Power Strip:the 3 side outlets with super small size of 2.5*1.9*1.9 INCH, can fit 1 large adapter and 2 standard plugs at the same time. Great for cruise ships, hotels, home, office or dorm room use.
- Cruise Essentials : Most cruise ships don’t allow surge-protected power strips on board for safety reasons. This multi outlet plug is designed with non-surge, compliant with major cruise lines – Carnival, Royal Caribbean, Princess, Disney, etc.
- Our After Sale Service: ETL Certified,Our friendly and reliable customer service will respond to you within 24 hours. You can purchase with confidence, with our 30-day return and 12-month replacement .
- 🚕COMPABILITY – Starter for Ford Auto and Light Truck for F-SERIES PICKUPS 1999-2008 4.2L(256) V6
- 🚕SPECIFICATION – 1.4kW/12 Volt, CW, 10-Tooth Pinion,for Ford PMGR Noseless
- 🚕INTERCHANGE ABILITY – for Ford 5L3Z-11002-B, 6L3Z-11002-DA, 6L3Z-11002-DRM, XL1U-11000-AA, XL1U-11000-AB, XL1U-11000-AC, XL1Z-11002-AA, XL1Z-11002-AARM, for Ford Engineering 4L3411000BA, RM8U2J11A230CA, XL1U-AA, XL1U-AB, XL1U-AC, Original Reference Number 6L34-DA
- 🚕COMPONENTS – High standards for components like wiring,brushes,insulation,bearings and coatings for consistent performance in all conditions
- 🚕GUARANTEE – One year warranty
- COMPABILITY-Starter for Chevrolet Cobalt 2005 2.0L(122) L4 for Cavalier 2002-2005 Classic (Fleet) 2004-2005 Cobalt 2005 for Malibu 2004-2005 2.2L(134) L4 for Eagle Tugs TT-4 AWD/TT-5 AWD/TT-6 AWD/TT-8 AWD WisCon TME27 Gas for Oldsmobile Alero 2002-2004 for Pontiac Grand AM 2002-2005 Pursuit 2005 Sunfire 2002-2005 for Saturn Ion 2003-2006 2.2L(134) L4 Ion 2004-2006 2.0L(122) L4
- SPECIFICATION-12 Volt, CW, 9-Tooth Pinion,Delco PG260D PMGR
- INTERCHANGE ABILITY-9000924, 9000933, 9000959, 9000976, 9000977, 9000989, GM 10465551, 12564089, 12568931, 12575083, 12581146, 12586764, 12587865, 12596233, 24454144, 89017443, 89017523, 89017756, 89018113, for Saab 24-454-144, Teledyne TM27M00520
- High quality materials-The high quality pinion has wear resistance and slip resistance, which can drive the engine to run efficiently.
- Low noise-Each component of the starter is installed tightly, making the noise lower
- 🚕COMPABILITY – Starter for Amc for Eagle 1988 4.2L for Jeep for Cherokee 1987-1998 Comanche Pickup 1987-1992 Grand for Cherokee 1993-1998 TJ Series 1997-1998 Wagoneer 1987-1990 Wrangler 1991-1998 4.0L Wrangler 1988-1990 4.2L Grand Wagoneer 1988-1991 J Series Pickups 1988 5.9L
- 🚕SPECIFICATION – 1.7kW/12 Volt, CW, 10-Tooth Pinion
- 🚕INTERCHANGE ABILITY – for Jeep-for Eagle 8933002709, 8982775123, JR775123, for Mitsubishi M001T74281, M001T74281ZC
- 🚕COMPONENTS – High standards for components like wiring,brushes,insulation,bearings and coatings for consistent performance in all conditions
- 🚕GUARANTEE – One year warranty
- Product 1: 61 Premium midi controller with 61 expressive synth-action keys, on-board pitch bend and modulation wheels for performances
- Product 1: Nektar DAW Integration for most popular DAWs
- Product 1: 14 MIDI assignable buttons
- Product 1: Mac, PC and iOS compatible
- Product 2: This electric piano stand features rubber hands, feet, and stability straps all designed secure your keyboard or digital piano in place.
- 🚕COMPABILITY – Starter for Ford Escape 2005-2008 2.3L 2009-2010 2.5L Focus 2003-2007 2.3L 2005-2010 Transit Connect 2010-2012 for Mazda Tribute 2005-2006 2008 2.3L 2009-2010 2.5L for Mercury MARINER 2005-2008 2.3L 2009-2010 2.5L
- 🚕SPECIFICATION – 1.4kW/12 Volt, CW, 11-Tooth Pinion
- 🚕INTERCHANGE ABILITY – for Ford 3S4T-11000-AB, 3S4T-11000-AC, 3S4Z-11002-AB, 4S4T-11000-AA, 4S4Z-11002-AA, 5M5T-11000-AA, 5M5T-11000-AB, 5M5T-11000-AC, 5M5T-11000-AD, 5S4T-11000-AA, 5S4Z-11002-A, 6S4T-11000-AA
- 🚕COMPONENTS – High standards for components like wiring,brushes,insulation,bearings and coatings for consistent performance in all conditions
- 🚕GUARANTEE – One year warranty
- 【Diaphragm Pump Features】110V AC water pump provides 5.5 gallons per minute water flow, 55PSI and 1.5 Max amps. The pump suction power is 9.8 vertical feet.
- 【On Demand】Built in on demand pressure switch which turns it on immediately when the faucet on. Factory default setting 55PSI, the adjustment range is 17-60PSI.
- 【Safe and Smooth】The pump is super quiet, thermally protected and can run dry without damage. Temperatures above 70℃/ 158℉ temporarily stop working.
- 【Wide Application】Mainly used for tap water pressurization, car washing, faucets, showers, agricultural irrigation, non-flammable liquid transportation, garden watering and spraying, etc. Easy to install and and excellent water flow, it can directly replace similar common water pressure pumps.
- 【AWESOME Customer service】Commitment to provide a 4-year warranty for all DC HOUSE WATER PUMP. If for any reason you are not satisfied contact us immediately via the order. We have a strong customer service team working for it.
- American Plug to Europe Plug Adapter – This adapter Compatible for use in countries such as Germany, France, Norway, Spain, Iceland, & more. Note: This EU adapter plug will not work in Great Britain, Italy, Ireland, and Switzerland.
- Compact and Travel Friendly – This European travel plug adapter is perfect for traveling and using with your iPhone charger, laptop charger, camera charger and other dual voltage chargers. This European plug adapter converts 2 or 3 pin American plug to European (Schuko) plug.
- This USA to Europe plug adapter is not a voltage converter or transformer. This 5mm diameter grounded plug adapter will not convert the voltage from 220V to 110V.
- Note: This is just a plug adapter and it only changes the prongs to round pins for European outlets. Make sure your items are compatible for use in 220-240V outlets or use with a proper voltage converter.
- CE Certified with one-year manufacturer warranty and lifetime OREI support.
I. Common Reasons AC Stops Working
A. Lack of Power Supply
When your air conditioning unit suddenly stops working, the first thing to check is the power supply. Several factors related to the power supply can cause your AC to malfunction.
1. Tripped Circuit Breaker
A common reason for a lack of power to your AC unit is a tripped circuit breaker. Circuit breakers are designed to protect your electrical system from overload. If too much current flows through the circuits, the breaker will trip, cutting off power to the connected devices, including your air conditioner.
To fix a tripped circuit breaker, locate your electrical panel and check if any circuit breakers have been tripped. If you find a tripped breaker, switch it off and then back on to reset it. However, if the breaker continues to trip, it may indicate a more serious electrical issue that requires professional attention.
2. Blown Fuse
In some cases, a blown fuse could be the reason behind your AC malfunction. Fuses are designed to protect electrical circuits by breaking the circuit when excessive current flows through it.
To check if a blown fuse is causing your AC to stop working, locate the AC fuse in your electrical panel and inspect it for any signs of damage. If the fuse appears to be blown, replace it with a new one of the same rating. If the fuse blows again, it’s essential to call a professional to diagnose and repair the underlying issue.
3. Power Outage
In the event of a power outage, your air conditioner will automatically stop working. While power outages are beyond your control, it’s important to check if the outage is limited to your home or if it’s a widespread issue in your area.
If the power outage is limited to your home, try resetting the main breaker in your electrical panel. If the power doesn’t come back on, contact your local utility company to report the issue.
B. Thermostat Issues
The thermostat acts as the control center for your air conditioning system. If your AC stops working, it’s worth investigating if the thermostat is functioning correctly.
1. Incorrect Temperature Settings
Sometimes, the reason your AC is not cooling could be as simple as incorrect temperature settings on your thermostat. If the desired temperature is set too high or too low, the air conditioner may not turn on or may not cool the space effectively.
Check the temperature settings on your thermostat and ensure they are set to the desired level. Adjust the settings if necessary and monitor if the AC starts working properly.
2. Faulty Thermostat
A faulty thermostat can also cause your AC to stop working. If the thermostat is unable to accurately read the temperature or send the right signals to the AC unit, it may fail to operate.
To determine if your thermostat is faulty, try replacing the batteries and reprogramming it. If the AC still doesn’t respond, you may need to replace the thermostat with a new one. Consult a professional if you are unsure about installing a new thermostat.
3. Dead Batteries in Thermostat
Many thermostats are battery-powered, and dead or low batteries can prevent them from working correctly. If your thermostat has stopped working or is unresponsive, check the batteries and replace them if necessary.
C. Refrigerant Leaks
Refrigerant is crucial for the cooling process in your air conditioning system. If there is a refrigerant leak, your AC may stop working efficiently or fail to cool altogether.
1. Signs of Refrigerant Leak
Several signs indicate a refrigerant leak in your AC system. These include reduced cooling performance, hissing or bubbling sounds near the indoor unit, ice buildup on the refrigerant lines or evaporator coil, and an increase in energy bills.
2. Effects of Low Refrigerant
Low refrigerant levels can lead to reduced cooling capacity and increased strain on the AC unit. This can result in inefficient cooling, longer running times, and potential damage to the compressor.
3. Causes of Refrigerant Leaks
Refrigerant leaks can occur due to several reasons, including corrosion of the refrigerant lines, loose fittings or connections, or physical damage to the coils. It’s crucial to have a professional HVAC technician locate and repair the refrigerant leak to ensure optimal performance and prevent further damage.
D. Dirty Air Filters
Air filters play a vital role in maintaining the efficiency and performance of your air conditioning system. Dirty air filters can cause your AC to stop working and negatively impact indoor air quality.
1. Importance of Clean Air Filters
Clean air filters ensure proper airflow and prevent dust, dirt, and debris from entering the AC system. They help trap airborne particles, improving indoor air quality and protecting the components of the air conditioner.
2. How Dirty Air Filters Affect AC Performance
When air filters become dirty and clogged, they restrict airflow, forcing the AC unit to work harder to cool the space. This can lead to reduced cooling efficiency, longer running times, increased energy consumption, and potential damage to the system.
3. How to Replace Air Filters
Regularly replacing air filters is essential for maintaining the performance of your AC system. Check the manufacturer’s recommendations for the recommended filter replacement schedule. Typically, air filters should be replaced every 30 to 90 days, depending on factors such as usage and air quality.
To replace the air filter, locate the filter compartment in your AC system, remove the old filter, and replace it with a new one of the same size and type. Ensure the filter is correctly installed and facing the correct direction. If you’re unsure about replacing the filter yourself, consult a professional HVAC technician.
E. Frozen Evaporator Coil
A frozen evaporator coil is another common reason for AC malfunctions. When the evaporator coil freezes, it restricts airflow, causing the AC unit to stop working or cool inadequately.
1. Causes of a Frozen Evaporator Coil
Several factors can cause the evaporator coil to freeze, including dirty air filters, blocked air vents, low refrigerant levels, or a malfunctioning blower fan.
2. Signs of a Frozen Evaporator Coil
Signs of a frozen evaporator coil include reduced or no airflow from the vents, ice buildup on the evaporator coil, and a noticeable decrease in cooling performance.
3. How to Fix a Frozen Evaporator Coil
If you suspect a frozen evaporator coil, turn off the AC unit and let it thaw naturally. Remove any ice buildup gently, but avoid using sharp objects that could damage the coils. Once the coil is completely thawed, check the air filters and clean or replace them if necessary. If the problem persists, contact a professional HVAC technician to diagnose and repair the underlying issue.
F. Blocked Condensate Drain Line
The condensate drain line is responsible for removing excess moisture that collects during the cooling process. If the drain line becomes blocked, it can cause water to back up and prevent the AC from working correctly.
1. Importance of Clear Drain Line
A clear condensate drain line is essential for proper moisture removal and prevents water damage to your AC system and surrounding areas.
2. Signs of a Blocked Drain Line
Signs of a blocked condensate drain line include water pooling around the indoor unit, unpleasant odors, and increased humidity levels in the space.
3. How to Clear a Blocked Drain Line
To clear a blocked condensate drain line, start by locating the drain line’s access point. This is typically located near the indoor unit or in the basement. Gently remove the cap or plug and use a wet/dry vacuum or a thin brush to remove any debris or buildup in the line.
Once the blockage is cleared, pour a mixture of equal parts water and vinegar down the drain line to clean and disinfect it. Finally, replace the cap or plug and ensure that the drain line is functioning correctly.
G. Faulty Capacitor
A faulty capacitor can prevent your AC unit from starting or running efficiently. Capacitors are responsible for providing the electrical charge needed to start the compressor and fan motors.
1. Role of Capacitor in AC Units
Capacitors store electrical energy and provide the necessary voltage and current to start the motor. They act as a kind of “jumpstart” for the compressor and fan motors, enabling them to begin running smoothly.
2. Symptoms of a Faulty Capacitor
Common symptoms of a faulty capacitor include difficulty starting the AC unit, clicking sounds during startup, the unit not turning on at all, or the fan not spinning properly.
3. Replacing a Faulty Capacitor
If you suspect a faulty capacitor, it’s essential to have it replaced by a professional HVAC technician. Capacitors store electrical energy and can discharge even when the power is turned off, posing a potential electrical hazard. A qualified technician can safely diagnose the issue, select the appropriate replacement capacitor, and install it correctly.
H. Dirty or Damaged Condenser Coil
The condenser coil is located in the outdoor unit of your air conditioning system and plays a crucial role in heat exchange. If the condenser coil becomes dirty or damaged, it can affect the AC’s cooling performance.
1. Importance of Clean Condenser Coil
A clean condenser coil allows for efficient heat transfer, allowing the AC unit to cool the space effectively. Dirt, debris, and damage to the coil can impede heat exchange and cause the AC to stop working correctly.
2. Signs of Dirty or Damaged Condenser Coil
Signs of a dirty or damaged condenser coil include reduced cooling performance, longer running times, increased energy consumption, and visible dirt or debris on the outdoor unit.
3. How to Clean or Repair Condenser Coil
Cleaning or repairing the condenser coil is best left to a professional HVAC technician, as it requires specialized tools and knowledge. Regular maintenance of the outdoor unit, including cleaning the coil and removing any debris, can help prevent issues and ensure optimal performance of your AC system.
I. Malfunctioning Fan Motor
The fan motor in your AC unit is responsible for circulating air and ensuring proper airflow. If the fan motor malfunctions, the AC may stop working or fail to cool effectively.
1. Role of Fan Motor in AC Units
The fan motor propels air across the evaporator coil to absorb heat and distribute cool air throughout the space. It also assists in expelling heat from the condenser coil.
2. Signs of a Malfunctioning Fan Motor
Signs of a malfunctioning fan motor include reduced or no airflow from the vents, unusual noises coming from the outdoor unit, and the AC not cooling the space adequately.
3. Repairing or Replacing a Faulty Fan Motor
If you suspect a faulty fan motor, it’s advisable to contact a professional HVAC technician. They can diagnose the issue, determine if a repair is possible, or recommend replacing the fan motor if necessary.
J. Compressor Issues
The compressor is the heart of your air conditioning system and is responsible for circulating refrigerant and facilitating the heat exchange process. Compressor issues can cause your AC to stop working or cool inadequately.
1. Common Compressor Problems
Common compressor problems include electrical issues, refrigerant leaks, or mechanical failures. These can result in the compressor failing to start, making unusual noises, or causing a complete AC breakdown.
2. Signs of Compressor Issues
Signs of compressor issues include warm air blowing from the vents, clicking or buzzing sounds coming from the outdoor unit, or the AC not turning on at all.
3. Repairing or Replacing a Faulty Compressor
Compressor issues often require professional attention. Attempting to repair or replace a faulty compressor without the necessary expertise can lead to further damage and may void any warranties. Consult a qualified HVAC technician to diagnose the problem and recommend the most appropriate solution.
K. Improper Installation
The correct installation of your air conditioning system is crucial for optimal performance and longevity. If your AC is not installed correctly, it may not work efficiently or may experience frequent breakdowns.
1. Impact of Improper Installation on AC Performance
Improper installation can result in several issues, including inadequate cooling, reduced energy efficiency, frequent breakdowns, and premature wear and tear on components.
2. Signs of Improper Installation
Signs of improper installation include uneven cooling, excessive noise or vibrations, frequent system malfunctions, and higher-than-expected utility bills.
3. Correcting Installation Issues
If you suspect that your AC system was improperly installed, it’s important to consult a professional HVAC technician. They can assess the installation and make any necessary adjustments or repairs to ensure optimal performance.
L. Aging or Faulty Equipment
Over time, air conditioning equipment can become less efficient and more prone to malfunctions. Aging or faulty equipment can cause your AC to stop working or exhibit inadequate cooling performance.
1. Impact of Aging Equipment on AC Performance
Aging equipment may struggle to keep up with cooling demands, resulting in reduced efficiency, increased energy consumption, and more frequent breakdowns. Components may wear out or become less reliable over time.
2. Signs of Aging or Faulty Equipment
Signs of aging or faulty equipment include decreasing cooling performance, frequent repairs, rising energy bills, and an AC system that is more than 10-15 years old.
3. When to Replace AC Equipment
If your AC system is aging or experiencing frequent malfunctions, it may be time to consider replacing the equipment. Consult with an HVAC professional to assess the condition of your system and determine the most cost-effective and efficient solution.
By understanding the common reasons why your AC may stop working and following the troubleshooting tips provided, you can keep your cool during the hot summer months. Remember to consult a professional HVAC technician for complex issues or if you are unsure about any DIY repairs. Stay comfortable and beat the heat with a reliable and efficient air conditioning system.
AC Unit Not Turning On – How to Fix It
Frequently Asked Questions (FAQ)
Why is my AC not working?
How can I fix a blown fuse in my AC?
What should I do if the circuit breaker trips?
Why is a malfunctioning thermostat causing my AC to stop working?
What should I do if my AC has a refrigerant leak?
Final Words: Common Reasons for an AC Unit to Stop Working
In conclusion, there are several common reasons why an air conditioning (AC) unit may stop working. One of the main causes is a lack of power supply, which can be due to a tripped circuit breaker or a blown fuse.
Power outages can also cause the AC to stop working, in which case it is important to check if the outage is limited to your home or if it is a widespread issue in your area. Thermostat issues can also lead to AC malfunctions.
Incorrect temperature settings or a faulty thermostat can prevent the AC from turning on or cooling the space effectively. It is important to check the temperature settings and replace the thermostat if necessary. Another common reason for AC malfunctions is refrigerant leaks.
Low refrigerant levels can result in reduced cooling capacity and increased strain on the AC unit. Refrigerant leaks can be caused by factors such as corrosion, loose fittings, or physical damage to the coils. It is crucial to have a professional HVAC technician locate and repair the refrigerant leak.