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What is Trane Error Code 126, How to Fix Trane Error Code?

Trane

Trane is renowned as a leading manufacturer of high-quality heating, ventilation, and air conditioning (HVAC) systems. They specialize in producing innovative HVAC solutions, as well as building management systems and controls. Trane operates as a subsidiary of Trane Technologies, a prominent company dedicated to manufacturing advanced HVAC and refrigeration systems.

With a global presence, Trane has established itself as a trusted industry leader, employing over 29,000 professionals across 104 manufacturing facilities spanning 28 countries. Their extensive network enables them to efficiently serve customers worldwide, delivering exceptional HVAC products and services. Trane’s commitment to excellence and cutting-edge technology has propelled them to achieve annual sales exceeding US$8 billion.

Their continued success is a testament to their relentless pursuit of innovation, reliability, and customer satisfaction. As a result of their dedication to providing efficient and sustainable HVAC solutions, Trane has earned a strong reputation in the industry. Their products are trusted by homeowners, businesses, and organizations alike, ensuring comfortable and energy-efficient environments.

Whether it’s residential, commercial, or industrial applications, Trane’s comprehensive range of HVAC systems and solutions cater to diverse needs. Their focus on quality craftsmanship, advanced engineering, and environmental sustainability positions them as a preferred choice for those seeking reliable and efficient HVAC solutions.

Overall, Trane’s rich history, global presence, and commitment to delivering cutting-edge HVAC technology make them a prominent player in the industry, continuously raising the bar for comfort and energy efficiency.

What Is Trane Error Code 126? 

Trane Error code 126 is indicative of a communication issue between the thermostat and the HVAC unit. To troubleshoot this problem, follow these steps:

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Power Cycle the System:

  • Turn off both the furnace and the AC unit.
  • Wait for a few moments (around 30 seconds) to ensure a complete power cycle.
  • Switch the units back on.
  • Observe if the communication is restored.
  • If the error persists, proceed to the next step.

Contact a Local Technical Service Provider:

  • If power cycling doesn’t resolve the issue, it is recommended to seek assistance from a professional HVAC service provider in your area.
  • Trained technicians will have the expertise to diagnose and address the specific communication problem between the thermostat and the HVAC unit.
  • They can perform advanced troubleshooting techniques and ensure proper functionality of the system.
  • It’s important to note that if you are using a Trane 950 unit, Error Code 126 could indicate a low-temperature lockout. In this case, the system may have shut down due to extremely low outdoor temperatures. Resetting the system, as mentioned earlier, can often resolve this issue.

By resetting the entire system, any potential electrical circuit breaks or temporary glitches in the thermostat can be rectified. However, if the problem persists or you are unsure about performing these steps, it is highly recommended to contact a professional technician for further assistance.

Cause Of Trane Error Code 126

Trane Error code 126 is specifically associated with a low-temperature lockout. This error occurs when the thermostat detects a broken electrical circuit, typically caused by extremely low outdoor temperatures. It can also arise from a communication malfunction between your HVAC unit and the thermostat. To effectively address the Trane error code 126, resetting the entire system is the recommended solution.

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Resetting the system allows for a fresh start, clearing any temporary glitches or issues that may have triggered the error. This process involves turning off both the furnace and the AC unit, waiting for a short period, and then turning them back on. By doing so, you restore the system to its default settings, providing an opportunity for the thermostat and HVAC unit to re-establish proper communication.

If the error code persists after resetting the system, it is advisable to seek professional assistance from a qualified HVAC technician. They possess the expertise to diagnose and resolve more complex issues related to the electrical circuit or communication between components. Additionally, professional technicians can ensure the system functions optimally and efficiently, providing you with reliable comfort and peace of mind.

How To Fix Trane Error Code 126?

Trane Error Code 126 indicates a ventilation issue in the furnace, often caused by factors like venting system blockages or pressure switch problems. Here are steps to address this error:

Clean or replace the air filter:

  • Remove the front cover of the unit.
  • Unscrew and remove the air filter.
  • Clean the filter using a dust cloth or vacuum cleaner.
  • Screw the filter back in the correct direction.
  • Reinstall the cover.

Check for debris or blockages in the outdoor unit:

  • Ensure power is supplied to the outdoor unit.
  • Inspect the outdoor unit hose and discharge for any debris or obstructions.
  • Use a vacuum cleaner to clear any obstructions.
  • Attempt to restart the outdoor unit by pressing the power button. If it doesn’t start, consider replacing the unit.
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Verify correct thermostat settings:

  • Set the thermostat to the correct mode (A/C) and temperature (2).
  • Press and hold the “C” and “H” buttons simultaneously until the display shows the “A” mode and adjust the time to “7:00 PM”.
  • Check the power supply by ensuring it’s plugged in and functional.

Inspect for loose wires or damaged components:

  • Examine the air conditioner for loose wires or damaged components.
  • Replace any identified issues.
  • If no loose wires or damaged components are found, check for a blown fuse.

Reset the air conditioner:

  • Turn off the air conditioner using the main power switch.
  • Wait for two minutes to allow the unit to stop cooling.
  • Turn on the air conditioner using the main power switch.
  • Wait for two minutes for the unit to reach the operating temperature.
  • If the desired temperature is not reached, repeat steps 2-4.
  • Contact an authorized Trane dealer for further assistance if the issue persists.

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