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First step in troubleshooting is to catch the unit in the failure act and determine if we are losing power to motor and if so where
I understand and am very familiar with the ecm motor.The motor has high voltage at all times.It is controlled however through low or dc voltage/Your hvac guy should have what is called an ecm tester o connect to the motor bypassing the board.If motor is getting control power from the board, the bell control is the problem and sis most common.If control board is not sending control signal, the board is the problem.
The testor takes the board out of the picture.In other words if fan works when disconnected from board and connected to tester, the issue is a failing board
Can you give me complete model on label and I will point the components out
THanks.I want to be as specific as possible
OK it appears yours has a 24v control rather than the 16 pin.
What you will want to check is to see if losing the 24v between Yellow and blue when it stops.
If 24v stays constant, issue is motor.If we lose 24v ,issue is the circuit board where yellow wire plugs in
Hard to find Trane parts list online as Trane is pretty strict about sharing info.The do not want homeowner doing work on their units.You might get part numbers directly from board or motor and Google.Just a note though this should be under warranty if less than 10 years old and registered.
If you have further questions, please let me know.
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