Over-temperature Condition (Control Board Thermistor Fault, Adv. Code 3)

What does 19 mean?

This fault indicates a problem with the control board temperature sensor (thermistor) or its connection. The drive cannot accurately monitor the control board temperature, which could lead to undetected overheating and damage to critical control components. This compromises the drive's ability to protect itself.

Complete Troubleshooting Guide

1. 1

   Power down the drive and inspect the connections of the control board thermistor for looseness, corrosion, or damage.

2. 2

   Test the thermistor for proper resistance value using a multimeter, referencing the drive's specifications for expected resistance at ambient temperature.

3. 3

   If connections are good and the thermistor tests faulty, it may require replacement. Consult the factory for replacement parts.

4. 4

   If the issue persists after checking connections or replacing the sensor, consult the factory for further diagnosis of the control board.