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126.00 trane error code

How to Fix Err 126.00 Trane Error Code

Err 126.00 Trane error code is a common issue that many homeowners and HVAC technicians face when working with Trane heating and cooling systems. This error code indicates that there…

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Err 126.00 Trane error code is a common issue that many homeowners and HVAC technicians face when working with Trane heating and cooling systems. This error code indicates that there is a problem with the communication between the indoor and outdoor units of the system, which can lead to various issues such as reduced efficiency, increased energy bills, and even system failure. 

In this blog post, we will explain what Err 126.00 Trane error code means, why it occurs, and how to fix it using some simple and effective methods. Whether you are a homeowner or an HVAC technician, this guide will help you troubleshoot and resolve this error code quickly and easily.

Step 1: Reset the Unit

One of the easiest and most common ways to fix err 126.00 Trane error code is to reset the unit by turning off the power for a few minutes and then turning it back on. This method can help clear any temporary glitches or errors that may have caused the communication problem between the indoor and outdoor units.

To reset the unit, follow these steps:

  • Locate the circuit breaker or switch that controls the power supply to your Trane system and turn it off.
  • Wait for at least five minutes to allow the system to reset itself.
  • Turn the power back on and check if the error code has disappeared from your thermostat or control panel.

The benefits of this method are that it is simple, quick, and cost-effective. You do not need any special tools or skills to perform this method, and it can often solve the error code without any further intervention.

However, the limitations of this method are that it may not work for all cases, and it may not address the root cause of the 126.00 trane error code. If the error code persists or reappears after resetting the unit, you may need to try other methods or contact a professional service provider.

READ: How to Troubleshoot American Standard Furnace Codes

Step 2: Check the Wiring and Control Board

Another possible way to fix err 126.00 Trane error code is to check the wiring and control board for any damage or loose connections that may interfere with the communication between the indoor and outdoor units. This method can help identify and repair any physical issues that may cause the error code.

To check the wiring and control board, follow these steps:

  • Turn off the power to the unit and disconnect it from the power source.
  • Locate the wiring and control board inside the unit. You may need to remove some panels or covers to access them.
  • Inspect the wiring and control board for any signs of damage, such as burns, cracks, corrosion, or fraying.
  • Check if the wiring is securely connected to the terminals and connectors on the control board and the unit.
  • If you find any damage or loose connections, repair or replace them as needed. You may need some tools such as a screwdriver, a wire stripper, a multimeter, or a soldering iron for this method.
  • Reconnect the unit to the power source and turn on the power. Check if the error code has disappeared from your thermostat or control panel.

The benefits of this method are that it can help fix any physical issues that may cause the error code, and it can improve the performance and lifespan of your unit. However, the limitations of this method are that it requires some technical skills and tools, and it may not work for all cases.

If the 126.00 trane error code persists or reappears after checking the wiring and control board, you may need to try other methods or contact a professional service provider.

READ: How Do I Know If My Furnace Control Board Is Bad?

Step 3: Contact a Local Technical Service Provider or Replace the Control Board

When to Contact a Local Technical Service Provider or Replace the Control Board:

  • Complex Issues: If you encounter complex issues during your inspection of the wiring and control board, it is advisable to contact a local technical service provider. They have the expertise and knowledge to diagnose and resolve intricate problems effectively.
  • Lack of Experience: If you lack experience or confidence in handling electrical components, it is best to leave the task to professionals. Working with electrical systems can be dangerous without the necessary skills and precautions.
  • Under Warranty: If your Trane system is under warranty, it is recommended to contact an authorized service provider to avoid voiding the warranty. They have the expertise to diagnose and repair the system while adhering to warranty guidelines.
  • Control Board Replacement: If you have identified a faulty control board as the root cause of the issue, replacing the control board may be necessary. This is a more advanced task that typically requires professional assistance to ensure proper installation and compatibility.

Costs and Benefits of Contacting a Local Technical Service Provider or Replacing the Control Board:

  • Professional Fees: The cost of hiring a local technical service provider varies depending on the complexity of the issue, your location, and the provider’s rates. They may charge a service fee for diagnosis and additional fees for repairs or parts replacement.
  • Time and Convenience: Contacting a professional saves you time and effort in troubleshooting and resolving the issue. They have the necessary tools and knowledge to diagnose and fix the problem efficiently, ensuring your Trane system is back up and running smoothly.
  • Warranty Protection: If your Trane system is under warranty, working with an authorized service provider ensures that the warranty remains valid. They will use genuine Trane parts and follow warranty guidelines during the repair process.
  • Expertise and Experience: Professional technicians possess the expertise and experience to handle HVAC systems. They can accurately diagnose issues such as the 126.00 Trane Error Code, provide appropriate solutions, and ensure the correct installation of replacement parts like the control board.

It’s important to note that costs and benefits can vary depending on the specific circumstances and service provider. It is recommended to obtain quotes from reputable local service providers to get a better understanding of the costs involved.

READ: How to Fix Tempstar Furnace Codes Smoothly

List of Trane Error Codes Along With their Potential Issues

Error CodeMeaningPotential Issue
Err 2.00High-pressure control open or stuckMalfunctioning high-pressure control switch or circuit
Err 3.00Indoor blower motor or relay issueFaulty indoor blower motor or malfunctioning relay
Err 4.00Indoor coil temperature sensor failureDefective or faulty indoor coil temperature sensor
Err 7.00Outdoor fan motor or relay issueMalfunctioning outdoor fan motor or faulty relay
Err 11.00Outdoor coil temperature sensor failureFaulty outdoor coil temperature sensor or its wiring
Err 12.00Discharge air temperature sensor failureDefective or malfunctioning discharge air temperature sensor
Err 13.00Outdoor air temperature sensor failureMalfunctioning outdoor air temperature sensor or its wiring
Err 22.00Invalid or faulty communicationCommunication issues between components or control board
Err 24.00Faulty or malfunctioning thermostatDefective thermostat or faulty temperature sensor
Err 33.00Faulty or clogged condensate drain lineClogged or blocked condensate drain line
Err 40.00Faulty or malfunctioning blower motorMalfunctioning blower motor or faulty blower relay
Err 59.00Low refrigerant pressureInsufficient refrigerant charge or refrigerant leak
Err 61.00Invalid or faulty control board communicationCommunication issues with the control board
Err 77.00Malfunctioning outdoor unit or componentIssues with the outdoor unit’s components or circuitry
Err 79.00Thermal lockout due to low-temperature conditionsSystem shutdown due to low-temperature conditions
Err 80.00Thermal lockout due to high-temperature conditionsSystem shutdown due to high-temperature conditions
Err 89.00Pressure sensor failure or out-of-range pressure readingsFaulty pressure sensor or abnormal pressure readings
Err 90.00Open or short circuit detected in the systemOpen or short circuit in the system wiring or components
Err 91.00High pressure switch open or stuckMalfunctioning high-pressure switch or its circuit
Err 126.00Low refrigerant chargeInsufficient refrigerant charge or refrigerant leak
A table of common Trane furnace error codes

Please note that this table provides the error code, a general meaning, and potential issues associated with each error code. However, for accurate diagnosis and troubleshooting, it is always recommended to refer to the manufacturer’s documentation or consult a qualified technician familiar with your specific Trane system.

In Conclusion

In this blog post, we have learned how to fix the 126.00 Trane error code, which indicates a problem with the outdoor unit fan motor. We have explained the possible causes, symptoms, and solutions for this error code, and how to prevent it from happening again. We hope this guide has helped you restore your Trane system to its optimal performance and comfort.

I'm an HVAC enthusiast and a passionate writer dedicated to sharing valuable insights and practical tips about heating, cooling, ventilation, and air conditioning systems.

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Hi there, I'm Robert Brooks

Hi there, I'm Robert Brooks

I’m so glad you are here! Welcome to my website, where I’ll share easiest HVAC troubleshooting tips, buyers guides, and everything about HVAC cooling and heating system. Learn more about me.

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