TF/TH sensor tripped

What does F-31 mean?

The motor's TF/TH thermal sensor has tripped, indicating the motor is overheating, or there's an issue with the sensor connection. Possible causes include a disconnected, incorrectly wired sensor, or an interrupted connection between the MOVITRAC® B and the sensor. Continued operation with an overheated motor risks severe winding damage.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify the sensor itself for proper function and resistance values.