Over-heat of Resistor Module (ECM)

What does J mean?

The Resistor Module has detected an abnormal temperature, indicating overheating. This is typically detected by a built-in thermostat.

1. 1

   Check for blockages to airflow around the Resistor Module.

2. 2

   Verify the operation of any cooling fans associated with the Resistor Module.

3. 3

   Ensure the discharge duty cycle is within specifications; excessive regeneration can cause overheating.