17-37

Controller recovered from internal temperature fault

Allen-Bradley · Logix 5000

What does 17-37 mean?

This fault indicates that the controller has successfully recovered from an automatic shutdown caused by exceeding its internal temperature threshold. The module's temperature has decreased to a suitable level, re-enabling controller voltages.

Common Causes

  • Controller recovered from automatic shutdown due to high internal temperature
  • Module's temperature decreased to a suitable level after exceeding temperature threshold of preservation fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the electrical cabinet's ventilation openings, filters, and cooling fans for obstructions or proper operation.

  2. 2

    Measure the internal ambient temperature within the electrical cabinet and compare it against the Allen-Bradley Logix 5000 operating temperature specifications.

  3. 3

    Verify proper spacing and airflow around the Logix 5000 controller modules as per the installation manual guidelines.

  4. 4

    Measure the input voltage to the Logix 5000 power supply module and verify it is within the specified operating range.

  5. 5

    Inspect the Logix 5000 controller modules and rack for excessive dust accumulation that could hinder heat dissipation.

Browse all codes in this manual (60)
Verified technical data. Last updated: March 2026

Related Faults