Drive Motor B Inverter Phase V Over Temperature

Common symptoms

What you'll notice

• Check for any loose connections or damaged wiring in the motor inverter phase V circuit.
• Inspect the motor inverter for any signs of overheating or component failure.
• Ensure the motor inverter cooling system is functioning properly, including checking the coolant levels and fan operation.
• If necessary, replace the motor inverter with a new or refurbished unit to resolve the problem.

Common causes

Most likely first

1. Insufficient cooling system for the motor inverter
2. Faulty temperature sensor in the drive motor B inverter
3. Overloading of the drive motor B causing excessive heat generation
4. Wiring or circuit issues in the drive motor B inverter
5. Software or firmware issues in the motor control unit

How to diagnose & fix

Work through it in order

1. Overheating of the motor or inverter
2. Increased resistance or difficulty in accelerating
3. Inconsistent or fluctuating power output
4. Unusual noise or vibrations coming from the motor or inverter
5. Sudden loss of power