Question about Life Fitness T3 Treadmill with Advanced Console
Fet error is caused by the drive component(s) on the motor control board going open circuit or faulty. This is caused by poor power supply or excessive friction on the running belt which in both cases leads to excessive heat build up in the control electronics.
The Motor controller will need to be repaired or replaced and the heat issue resolved.
Posted on Apr 27, 2010
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Posted on Jan 02, 2017
SOURCE: Fet error message
The FET error message is caused by the driver transistor on the motor controller has shorted out. Unfortunately, the fix is replacing the motor controller.
Posted on May 07, 2010
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