0007 hex

Temperature Difference Exceeded

Beckhoff · EL6900 Operating Instructions

What does 0007 hex mean?

This diagnostic code (found within FA00:03 Temperature error) indicates that the temperature difference between the internal measuring points (e.g., Temperature Primary MC and Temperature Secondary MC, FA80:01 and FA80:02) has exceeded its permissible threshold. A significant temperature differential can suggest localized heating or cooling issues within the terminal, potentially leading to component stress or operational instability.

Common Causes

  • The difference between two measured temperature points (e.g., inlet vs. outlet, or ambient vs. internal) exceeds the acceptable threshold.
  • Imbalance in the thermal management system.
  • Faulty temperature sensor leading to an erroneous differential reading.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the diagnostic object FA80:01 (Temperature Primary MC) and FA80:02 (Temperature Secondary MC) to identify the specific temperature values and calculate the difference.

  2. 2

    Verify the mounting and heat dissipation of the EL6900 terminal for even temperature distribution.

  3. 3

    Inspect the terminal internally for any debris or obstructions that might impede heat transfer or cause localized heating.

Browse all codes in this manual (16)
Verified technical data. Last updated: March 2026

Related Faults

Source: Beckhoff EL6900 Operating Instructions