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Anthony MurphySep 13, 2025
How to troubleshoot no communication to the unit controller on my Trane Temperature Controller?
- LlaurenrussoSep 13, 2025
If there is no communication to the unit controller on your Trane Temperature Controller, check for 22–32 Vdc between terminals 11 and 12 at the sensor. If no voltage is present, inspect the wiring.