External Process Threshold Error

What does EPtF mean?

This fault indicates that a monitored condition in an external system, typically temperature, has exceeded its defined high-high threshold, as set by parameter F353 ([High high Thd]), triggering an error state.

• Overheating condition detected in the external system.
• The external threshold parameter F353 ([High high Thd]) has been exceeded.

Click steps to track your progress.

1. 1

   Check the external system (e.g., refrigerant circuit) that triggered the threshold condition.

2. 2

   Verify the sensor input to the drive for correct readings and functionality.

3. 3

   Review parameter F353 ([High high Thd]) value to ensure it is appropriate for the application.