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How do I fix Trane furnace error codes?

Alton Alexander
By Alton AlexanderUpdated on June 3rd, 2022

The Trane furnace error code is a code that is displayed on the furnace when there is an error with the furnace. This code can be caused by many different things, such as a problem with the furnace itself, or a problem with the wiring.

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1. Check the furnace's power supply and reset the circuit breaker if necessary

  1. Locate the furnace’s power supply. On most models, the power supply is located behind the furnace.
  2. If the power supply is not accessible, disconnect the power supply from the furnace.
  3. If the power supply is accessible, disconnect the power cord from the wall outlet.
  4. Remove the cover panel on the furnace.
  5. Locate the circuit breaker. On most models, the circuit breaker is located on the right side of the furnace.
  6. Reset the circuit breaker by turning it off and then on again.
  7. Reconnect the power cord to the wall outlet and the power supply.
  8. Replace the cover panel on the furnace.

2. Inspect the furnace's gas supply line and ensure it is properly connected and free of leaks

1.Open the furnace's front cover. 2.Check for any obstructions in the gas supply line. If there are any obstructions, remove them. 3.If the gas supply line is free of obstructions, connect it to the furnace's gas line. 4.Check for any leaks in the gas supply line. If there are any leaks, fix them. 5.Close the front cover of the furnace.

3. Check the furnace's combustion chamber and clean it if necessary

  1. Check the furnace's air filter and clean if necessary.
  2. Remove the spark plug wires and check the spark plugs for fouling or corrosion.
  3. Check the furnace's air intake and clean if necessary.
  4. Check the furnace's exhaust and clean if necessary.
  5. Check the furnace's combustion chamber for obstructions and clean if necessary.
  6. Replace any damaged or worn parts.

4. Inspect the furnace's heat exchanger and clean or replace it if necessary

  1. Enter the furnace’s service code.
  2. Check for error codes.
  3. If there are any error codes, perform the necessary repairs.
  4. Re-enter the furnace’s service code.
  5. Check for error codes.
  6. If there are any error codes, perform the necessary repairs.
  7. Re-enter the furnace’s service code.
  8. Check for error codes.
  9. If there are any error codes, perform the necessary repairs.

5. Check the furnace's blower motor and bearings, and lubricate them if necessary

  1. Turn off the power to the furnace.
  2. Open the furnace's access panel.
  3. Locate the blower motor and bearings.
  4. Remove the blower motor and bearings.
  5. Inspect the motor for damage and contamination.
  6. Clean the motor and bearings with a solvent.
  7. Apply a protective coating to the motor and bearings.
  8. Reinstall the motor and bearings.
  9. Test the furnace to confirm that the error code has been fixed.

Some users might also have success with the following opitons:

  1. Inspect the furnace's flue pipes and clean them if necessary.
  2. Check the furnace's control panel and replace any damaged or burnt-out switches or components.
  3. Call a qualified furnace repair technician to further diagnose and repair the problem.