What It Means
Outdoor coil temperature sensor open or shorted circuit fault.
Trane AC & Heat Pump
Trane AC & Heat Pump Error Code Red 6 Flashes
Troubleshooting guide for the Trane AC & Heat Pump system fault Red 6 Flashes.
Possible Causes
- Loose or dislodged coil sensor mounting.
- Damaged coil sensor wiring.
- Defective coil temperature sensor.
Not sure which one it is — or if it's none of these? Try ACLogics today.
Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.
New to this code? Click to see why this happens
Full Diagnosis
Coil temperature sensor fault (open or shorted).
All Recorded Causes
Inspect the coil sensor on the outdoor unit and ensure it’s securely in place with no damaged wiring. Replace the sensor if faulty.
Verify Before Replacing Parts
- Confirm the exact Trane model family and ac and heat pump context before acting on a generic code description.
- Confirm filter condition, blower operation, and coil cleanliness before replacing any controls — start by ruling out whether inspect the coil sensor on the outdoor unit and ensure it’s securely in place with no dama….
- Measure airflow-related readings that match the symptom, such as temperature split or static pressure, and check whether replace the sensor if faulty.
- After the correction, run the system long enough to confirm the ac and heat pump fault does not return under normal load.
Not sure which system this Trane code is on?
ACLogics has guided diagnostics for 36 Trane fault codes and asks the right questions to narrow it down.
