How To Fix E8 Error Code Air Conditioner

By SmartHomeBit Staff •  Updated: 06/12/23 •  25 min read

Understanding the E8 Error Code in Mini-Split Air Conditioners

When it comes to your mini-split air conditioner, encountering an E8 error code can be frustrating and concerning. In this section, we will explore the ins and outs of this error code, including what it means and how it can impact your air conditioner. However, there is no factual data provided to ascertain a fix for this error code.

What is the E8 error code?

The E8 error code is a common problem that Mini-Split air conditioners face. This code indicates a malfunction in the indoor fan blower motor system, either related to its function or wiring. When the motor fails to operate correctly, it causes issues in circulating cool air efficiently, resulting in reduced cooling effectiveness and affecting indoor temperature levels. In turn, this can lead to higher energy bills.

Dirty air filters often cause airflow issues, which are a known cause of this error code. Similarly, faulty fan motors can also lead to this issue. Checking for dirty filters or blockages regularly can help detect potential issues early on and avoid getting this error code. Professional service can also help to maintain efficient functioning and prevent various errors like this one down the line.

To reset the E8 error code, turn off the AC unit’s power supply and the breaker panel for at least 30 seconds before restarting it again. Addressing these types of issues early on through periodic checks could save homeowners significant amounts on otherwise expensive repairs later on. Therefore, it is essential to troubleshoot and resolve issues like the E8 error code as soon as they are detected.

How does the E8 error code affect your air conditioner?

An E8 error code in mini-split air conditioners can significantly affect the functioning of your AC unit, making your indoor temperature uncomfortable. The cooling and heating operations can come to a halt due to this error code, indicating issues with the indoor fan motor or outdoor printed circuit board (PCB).

When there are problems with the fan motor, it can result in a lack of communication between the motor and control module, leading to the motor’s inability to start. As a result, hot air gets trapped inside the room, failing to blow out of your unit. In contrast, PCB issues, such as wiring problems, can prevent you from controlling the fan motor correctly using your remote control.

Regularly cleaning your AC’s air filter can help prevent the E8 error code from appearing if it has been caused by a dirty air filter. Dust accumulation on filters can block airflow, leading to a warm effect on your compressor’s heat exchange system, eventually triggering the E8 error code. Therefore, keeping an eye out for any signs of dirt in filters and cleaning them frequently is essential.

To troubleshoot and fix this error code effectively, one must examine their AC’s wiring connections and ensure they align with manufacturer standards. One should also check if the indoor and outdoor fans are functioning correctly by verifying whether they rotate when an AC unit is powered on. Otherwise, components such as capacitors or motors need to be replaced in entirety for optimal functionality.

Suppose DIY troubleshooting procedures do not lead to identifying or fixing the issues causing E8 error codes effectively. In that case, calling professional help may be necessary, including checking for dirt blockages in either evaporator or condenser coils requiring manual cleaning, as cleaning these parts incorrectly can cause damage leading to expensive repairs.

Addressing E8 error codes promptly can help avoid spending unnecessary money on repairs or replacing the entire AC unit. Additionally, implementing cost-saving measures, such as using the energy saver mode in your air conditioner, can help lower monthly energy bills.

Common Reasons for E8 Error Code

If your air conditioner is displaying an E8 error code, there are a few common culprits to consider. In this section, we’ll explore the possible causes of this frustrating error code and what you can do to address them. From a clogged outdoor coil to a faulty indoor coil sensor and issues with the refrigerant temperature, we’ll cover the most frequent reasons why your air conditioner might be showing an E8 error code.

Dirty air filter causing E8 error code

Dirty air filters can be a culprit behind an E8 error code in mini-split air conditioners. This error code indicates a malfunction in the system and should not be ignored to prevent any further damage. One of the main reasons behind this error code is restricted airflow caused by dirty air filters. When airflow is constrained, it causes stress on the unit, and its efficiency reduces significantly.

Moreover, a dirty air filter can result in dirt buildup on fan blades, leading to hampered operation and even motor failure. Accumulated debris on the evaporator coil can hinder heat transfer and eventually lead to compressor failure. The humidity level inside the unit may increase due to inadequate ventilation brought on by dirty air filters, creating an ideal environment for mold growth.

Inadequate ventilation can also cause ice buildup on the evaporator coil and condenser unit, which disrupts proper cooling operation. Running a system with a dirty filter results in higher energy consumption, increased bills, and decreased unit lifespan.

To ensure the efficient functioning of AC units, it is critical to replace or clean air filters regularly as part of routine maintenance. Neglecting this task may result in costly repairs and replacement of the unit. Therefore, performing regular maintenance will keep your unit functioning at optimal efficiency.

Faulty fan motor causing E8 error code

A faulty fan motor is one of the primary causes of the E8 error code in mini-split air conditioners, according to factual data. This error code can happen when the fan motor has issues with its winding, rotation, or voltage supply. When the fan motor stops working correctly, it can either stop entirely or work at a reduced capacity, resulting in overheating and ultimately causing the unit to display an E8 error code.

To begin troubleshooting the E8 error code, start by inspecting the fan motor’s wiring connections and making sure that it rotates correctly. If any wires are corroded or disconnected, it may be due to moisture exposure or harsh weather conditions. It’s essential to address any potential issues with your fan motor promptly since a malfunctioning fan motor can put pressure on other components in your air conditioning unit and cause more significant damage.

Remember that if your AC unit’s wiring is complicated, it’s best to hire a professional HVAC technician rather than attempting DIY repairs using online tutorials. They have the knowledge and experience to handle any issues with your mini-split air conditioner and ensure that it’s up and running again in no time, providing smooth and cool air to help you beat the heat.

Wiring issues causing E8 error code

If you encounter an E8 error code in your mini-split air conditioner, it could be due to wiring issues. Checking the wiring connections is crucial, as well as inspecting other components such as motor fans, capacitors, or resistors that may have been affected by faulty wiring. It is crucial to ensure that all wiring is secured tightly and firmly. If you find that some wires are damaged, make sure to replace them with new wiring of the same gauge and length.

Handling wiring issues can be dangerous, which is why it’s best to consult with a professional HVAC technician if you’re unsure about what to do. Once the necessary wiring has been checked and fixed, it’s important to reset your air conditioner per the manufacturer’s instructions to ensure that any lingering error codes are cleared.

It’s essential to keep in mind that improper installation or handling of electrical wiring can result in serious injury or even death. Therefore, DIY repairs should be avoided when dealing with electrical issues. Although it’s rare, there have been instances where fire incidents were triggered by faulty electrical components within mini-split air conditioners that were associated with E8 errors. As a homeowner, it’s crucial never to ignore E8 error codes on your air conditioning units to ensure your safety and that of your loved ones.

How to Reset the E8 Error Code

If you own an air conditioner, you may encounter error codes from time to time. One such error code is the E8 code, which can indicate various issues. To reset the E8 error code, you can turn off the unit and the breaker. Following this simple step, you can quickly resolve the E8 error and restore your air conditioner to its normal functioning.

Power off and turn off breaker to reset E8 error code

In the event of an E8 error code on your air conditioner, it is crucial to reset the unit to restore its proper functioning. The unit can be reset through the power off and breaker methods, which involve turning off the power supply and switching off the circuit breaker that powers your air conditioning unit. Here is a simple 5-step guide you can follow to reset the E8 error code:

  1. Turn off the unit’s power supply and unplug the cord from the wall.
  2. Switch off the circuit breaker which powers your air conditioning unit. You can find this in your home’s main electrical panel.
  3. Wait for a few minutes before switching both the power supply and circuit breaker back on. Do not rush with this process as it may result in further issues.
  4. If the E8 error code appears again, repeat steps one to three until it disappears completely.
  5. If the error persists, seek help from a professional servicing company or reach out to customer support.

It is worth noting that before resetting the E8 error code by turning off circuits, it is essential to troubleshoot potential causes first. Dirty air filters or faulty fan motors could be the culprits and can be fixed during regular service routines. Checking the thermostat wiring should also be done if experiencing wiring problems that could lead to an E8 error code. By addressing these issues early on and using the energy saver mode on AC units where feasible, you can save money on energy bills in addition to avoiding expensive repairs later on.

Troubleshooting E8 Error Code

When your air conditioner displays an E8 error code, it indicates a malfunction with your unit. In this section, we will guide you through the troubleshooting process to resolve the issue and restore your AC to working condition. We will examine various components, such as fan blowers, air filters, fan rotation, motor wiring, electrical voltages, and the PCB board, that could be responsible for the error. Let’s begin!

Checking fan blowers and air filters

When it comes to air conditioner issues, checking fan blowers and air filters is an essential step in diagnosing potential E8 error codes that can be a headache and affect the overall functionality of the unit. Using a step-by-step method, there are three main points to consider when looking at fan blowers and air filters for potential issues.

Firstly, check for any visible debris or blockage that may cause interruptions for airflow. Secondly, verify whether or not the fans are rotating correctly and if any wiring issues may cause complications. Lastly, assess the overall function of the motor and check for potential electrical voltage issues that could cause a problem.

It is important to note that while looking at filters and fan blowers may be an easy way to address some common issues with AC units, more significant issues may require professional help. When in doubt, it is always better to seek expert advice as E8 error codes may indicate more complex problems with your air conditioner’s health than initially expected. Additionally, regular maintenance of fan blowers and air filters should be performed to ensure optimal performance and efficiency over time.

Checking fan rotation, motor wiring, and electrical voltages

To ensure that your air conditioner functions properly, it is crucial to check its fan rotation, motor wiring, and electrical voltages. These components play a crucial role in providing adequate cooling and maintaining a comfortable temperature within living spaces.

To check the fan rotation, motor wiring, and electrical voltages, follow these simple steps:

  1. Begin by turning off the power supply and ensuring that all wires are well-insulated.
  2. Take off the indoor unit’s cover to access the fan motor. Inspect the internal wiring within the motor for any harm or loose connections. Then, use a voltmeter to confirm that the right voltage is reaching the motor.
  3. Finally, conduct a quick review of the external wiring linked to your AC unit’s compressor to ensure that there are no faults in those wires.

By regularly checking the fan rotation, motor wiring, and electrical voltages, you can prevent problems down the line, such as air flow difficulties or more severe system malfunctions.

It is essential to remember that working with electricity can be hazardous if you do not take proper precautions. To minimize the risk, always disconnect power from your AC unit before performing any maintenance checks on its internal components.

Checking PCB board for errors

To ensure your air conditioner functions properly, it is crucial to regularly check the PCB board for any errors. The PCB board plays a critical role in controlling all of the electrical components of your air conditioner, and any malfunction in it can lead to an E8 error code.

Here are the steps you should take to check the PCB board:

Step Description
Step 1 Turn off the power supply. Before you start checking the PCB board, make sure to disconnect the system from the main circuit breaker.
Step 2 Inspect the PCB board. Once you’ve turned off power supply, locate the PCB board and inspect it for visible signs of damage or burnt areas. Additionally, check all connections to make sure they are secure and that there are no loose wires.
Step 3 Test electrical components. Using a multimeter, test the electrical voltages of each component, such as compressors, fans, and sensors. This step will help you identify if any of the components require replacement.

It is worth noting that, while checking for E8 error codes, it is essential to inspect other electrical components, such as wiring and fan motors, as they can also cause similar issues. Regular maintenance, such as checking for dirt build-up in filters or blockages in fan motors, can prevent E8 error codes caused by improper functioning of electronic parts in your AC unit.

Ignoring an E8 error code over a prolonged period may require expensive repair services, such as replacing the entire part. It is, therefore, crucial to address minor recurring issues before they escalate. Don’t wait until your AC unit screams for help like a horror movie victim. Instead, seek professional assistance when you encounter an E8 error code.

When to Seek Professional Help

Knowing when to seek professional help for an E8 error code in your air conditioner is crucial to avoid expensive repairs. It is important to note that E8 error code does not exist in the AC error code list. Therefore, please refer to the manufacturer’s manual for specific details on the error code. In general, signs that suggest it’s time to call in an expert include common issues like low refrigerant levels, electrical problems, compressor issues, and dirty air filters.

To prevent future breakdowns, it’s important to schedule regular servicing for your AC unit, which should include cleaning or replacing filters, checking refrigerant levels, and inspecting electrical connections. So, it is always better to hire a professional to diagnose the issue with your AC unit to avoid further damages.

Checking for dirty air filters and fan blockage

Dirty air filters and fan blockage are common culprits of the E8 error code in mini-split air conditioners. Neglecting to address these issues can lead to a poorly functioning unit, resulting in increased energy bills. To prevent this from happening, it is important to regularly check for dirty air filters and fan blockages.

To check for these issues, turn off and unplug the air conditioner before locating and removing the air filter. Clean or replace the filter every one to three months, depending on the manufacturer’s instructions. Use a flashlight to inspect all areas surrounding the indoor blower unit for any obstructions or debris that could be causing blockages. If obstructions are found, carefully remove them using a soft brush or cloth. Reinstall all components carefully and ensure they are securely attached before turning the system back on.

Regular maintenance is crucial in preventing dirty air filters and fan blockages. Blocked airflow can cause several issues, including an increase in energy consumption, insufficient cooling, excess noise, and a reduced overall lifespan. It is also important to keep furniture away from wall-mounted units to allow for proper airflow.

By periodically checking for these minor issues, they can be addressed immediately before they become major problems. Regular maintenance will optimize performance efficiency while reducing operating costs for all air conditioner units. Remember, regular AC maintenance is cheaper than fixing E8 error codes.

Importance of regular service for AC units

Regular maintenance is key to ensuring proper functioning and longevity of AC units. Neglecting service can cause dirty air filters, faulty fan motors, and wiring issues leading to error codes like E1 and E4. These error codes indicate communication problems between different components of the air conditioner.

Regular service optimizes all components of the AC unit, reducing malfunctions and errors. It includes checking and cleaning air filters, inspecting fan motors and wiring connections, testing electrical voltages, and examining the PCB board for errors or damage.

Neglecting AC unit service can increase energy bills by putting extra strain on the system, making it less efficient. Regular maintenance can also prevent costly repairs down the road.

Professional maintenance services should be scheduled annually to enhance indoor air quality and remove pollutants from circulating in your home. Energy Star suggests that regularly maintaining your AC unit can improve its efficiency by up to 15%, resulting in significant energy savings. Therefore, it is important to prioritize regular service for your AC units.

Tips to Save Money on Energy Bills

With the cost of energy on the rise, it is crucial to understand how to maximize your air conditioner’s energy efficiency. Heating and cooling contribute to almost half of a household’s energy consumption, so taking steps to reduce usage can save you money. In this section, we will provide tips on how to use your AC’s energy saver mode effectively, catch E8 error codes early to avoid expensive repairs, and troubleshoot thermostat wiring issues that can cause problems with your AC.

Using energy saver mode on air conditioner

If you want to save energy while keeping your home cool, the Energy Saver mode on your air conditioner can be a great option. This feature gradually adjusts the temperature of the room, ensuring your comfort while using less power. Wondering how to use it? Here’s a step-by-step guide:

Step Instructions
1 Find your air conditioner remote control.
2 Press the “mode” button until you see “Energy Saver” on the display.
3 Adjust the temperature to your liking, then select the “Energy Saver” mode again.
4 Your air conditioner will now automatically turn off when it reaches the desired temperature, and then turn back on when needed to maintain that temperature.
5 Using the Energy Saver mode can save you money on your energy bill without sacrificing your comfort.
6 When you’re not using your air conditioner, remember to turn it off or unplug it to avoid wasting electricity.

If you have any questions about this feature, consult your user manual or seek professional help. Additionally, don’t forget to clean or replace your air filters regularly to ensure maximum efficiency and savings over time. By using the energy saver mode and maintaining your equipment, you can enjoy a cool and efficient home all summer long.

Addressing E8 error codes early on to avoid expensive repairs

When it comes to air conditioner maintenance, it’s important to catch and address error codes early on to avoid costly repairs. One such error code that can affect Mini-Split Air Conditioners is E8, which indicates a malfunction in the indoor fan motor, leading to less efficient operation and higher energy consumption.

To prevent this issue from developing, it’s crucial to pay attention to potential signs of the E8 error code, like malfunctioning blowers or unusual noises. Regularly checking and changing dirty air filters can also help. And if you suspect any wiring issues or a faulty indoor fan motor, it’s best to contact a professional technician promptly to identify and address these issues before they become bigger problems.

In summary, addressing error codes early on is an essential part of air conditioner maintenance to ensure optimal performance and avoid expensive repairs. By keeping up with regular upkeep and seeking timely professional intervention when needed, you can prevent the E8 error code from negatively impacting your Mini-Split AC unit’s functionality and extend its lifespan.

So be sure to check your thermostat regularly to avoid E8 error code woes and ensure efficient cooling for a longer period.

Checking thermostat wiring if experiencing wiring issues

Are you having issues with your air conditioning system’s wiring? If so, checking the thermostat wiring is a crucial first step in determining the root of the problem and ensuring your AC unit operates correctly. Follow these six steps to check your thermostat wiring if you’re experiencing wiring issues:

Steps Instructions
1 Turn off the power supply to your AC unit before starting any work.
2 Find the wires that connect your AC unit to the air handling unit or furnace and ensure they’re connected correctly.
3 Using a multimeter, test the continuity of each wire by attaching one probe to one wire and the other probe to another wire. Repeat this process until you’ve tested all the wires.
4 If you find an open circuit or failed continuity between any two sets of wires, it usually means some wires are damaged or improperly connected.
5 If you don’t see any visible signs of damage in step four, check the connections at both ends of every wire to identify loose connections that may cause intermittent failures.
6 If you’re still experiencing problems after confirming correct connections, it’s best to consult an HVAC technician or electrician who can diagnose and repair complex electrical issues beyond basic testing.

By checking and repairing faulty wiring, you can also save on energy bills by ensuring your air conditioner runs smoothly without drawing excess power that leads to high electricity bills. It’s always recommended to seek professional assistance for diagnosing complex electrical problems and scheduling regular maintenance services for your AC unit to prevent common issues like E8 error codes caused by dirty air filters or blocked fan blades and keep your HVAC system running at optimal conditions, thus extending its lifespan.


When troubleshooting the E8 error code on an air conditioner, it’s essential to understand the root cause and efficiently fix it to ensure optimal performance. By following the reference data, you can diagnose and correct the issue without calling a technician.

One of the primary causes of the E8 error code in an air conditioner is a faulty temperature sensor. Accurately positioning the sensor is crucial, and any misplacement or damage may create problems. The compressor overload is another potential cause that can trip the protective device, resulting in the E8 error code.

To prevent future E8 error codes, regular maintenance activities like cleaning the air filter, ensuring proper airflow, and checking for clogs in the air inlet and drainage pipes are crucial. These activities help mitigate the risk of E8 error codes and ensure optimal performance of the air conditioner.

FAQs about How To Fix E8 Error Code Air Conditioner

What is an E8 error code on an air conditioner?

An E8 error code on a mini split air conditioner indicates a fan speed malfunction, which can be caused by several factors including a dirty air filter, faulty fan motor, wiring issues, blockage at outdoor fan motor assembly, or bad control board. E8 is a common error message on split mini-system air conditioners.

How can I reset the E8 error code on my air conditioner?

To reset the E8 error code on your air conditioner, power off the unit and turn off the breaker or disconnect for 2-3 minutes before powering back on. If the error code persists, further troubleshooting is needed to identify the problem.

What are the most common causes of an E8 error code?

The most common causes of an E8 error code are dirty indoor air filters and faulty fan motor. Dirty filters restrict airflow and can damage the AC system while reducing efficiency. Cleaning the filters with hot water and letting them dry can solve the issue. Faulty fan motors can be caused by voltage problems, water damage, or loss of lubrication, and may cause fan malfunction and display the E8 error code. Wrong wiring or faulty installation can also trigger compressor issues, leading to expensive repairs.

Can I fix the E8 error code on my air conditioner by myself?

Before seeking professional help, homeowners can check fan blowers, air filters, fan rotation, fan motor wiring and electrical voltages, and the PCB board. Checking for dirty air filters and ensuring the fan is not blocked and spinning freely are the most a homeowner can do. However, it is recommended to have a technician fix any issues with the AC unit. The user manual and service manual should also be checked before attempting to fix the issue.

Do I need regular air conditioner service to prevent an E8 error code?

Regular service prevents unexpected stalling and can detect potential issues before they become major problems. Therefore, it is important to have a technician fix any issues with the AC unit promptly to avoid more significant repair bills. Air conditioning units are important for a comfortable home and work environment.

Who can I call for help with the E8 error code on my air conditioner?

If uncertain, call a service technician to inspect the unit. Stanley Gilmore, an experienced appliance repairman, recommends seeking technician assistance for a faulty motor that can cause fan malfunction leading to the E8 error code. Energy saver mode on an air conditioner can also save money on energy costs.

SmartHomeBit Staff