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Troubleshooting code

Back to all 5TWX7060A1 error codes

Trane 5TWX7060A1 Fr troubleshooting

24 Vac control R-signal fault. Use this page to document the issue and prepare for service. GreenFlow should handle diagnosis for electrical, refrigerant, lockout, or recurring conditions.

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What the code means

Fr: 24 Vac control R-signal fault

Trane ODR-SVN003D-EN multi-speed status/fault tables for 5TWX7 heat pumps with ComfortSeek identifies Fr as no 24 Vac control R-signal on heat pump.

System area
Low-voltage control
Service level
Call GreenFlow

Safe checks before calling

  • Confirm the thermostat is on, set correctly, and calling for heating or cooling.
  • Check the air filter and visible return-air path for obvious airflow restrictions.
  • Look around the outdoor unit for leaves, snow, ice, or other visible obstructions without opening the cabinet.
  • Take photos of the thermostat, outdoor unit, nameplate, and any visible flash pattern before scheduling service.

When to stop and call GreenFlow

Call GreenFlow if the code repeats, the system is locked out, heating or cooling is not restored, there is ice buildup, electrical odor, unusual noise, or any issue involving pressure switches, sensors, wiring, refrigerant, reversing-valve operation, or warranty coverage.

Share the visible code, model and serial number if available, photos, current symptoms, and whether the issue affects heating, cooling, or both.

Fr questions

What does Fr mean on a Trane 5TWX7060A1?

Trane ODR-SVN003D-EN multi-speed status/fault tables for 5TWX7 heat pumps with ComfortSeek identifies Fr as no 24 Vac control R-signal on heat pump.

What Trane message is associated with Fr?

The Trane source used for this page associates Fr with "24 Vac control R-signal fault". Match the visible display text, LED pattern, or alert wording to the exact code whenever possible.

What system area does Fr point to?

This code is grouped under low-voltage control in the source-backed Trane troubleshooting data.

Which Trane documentation supports this Fr page?

Source-backed Trane ODR-SVN003D-EN multi-speed status/fault tables for 5TWX7 heat pumps with WeatherGuard and ComfortSeek. Local products are matched by documented 5TWX7 base model family.

Does Fr involve a control, board, drive, or module?

The Trane source row points to low-voltage control. Record the exact code and visible alert text before any reset so the control history is not lost.

What information should be captured for Fr before clearing alerts?

Capture the exact code, any displayed alert text, the model and serial number, thermostat or control status, operating mode, symptoms, and photos of the display or LED pattern before the alert history is cleared.

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They quickly identified the issue with the heating system and fixed it efficiently. He explained everything clearly and made sure I understood what was going on. Very professional and reliable, extremely satisfied with the service.

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They showed up within an hour of me making the call on a Sunday. They fixed our system and taught us how to replace the fuse in the future. We would definitely call again.

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