Power unit: Air intake overtemperature

What does A05002 mean?

For chassis power units, the alarm threshold for the air intake overtemperature has been reached, typically set at 42 °C with a 2 K hysteresis for air-cooled units. This indicates that the incoming air for cooling is too hot. If the air intake temperature increases by an additional 13 K, it will output fault F30035, risking critical overheating of the power unit.

Complete Troubleshooting Guide

1. 1

   Ensure that the ambient temperature surrounding the power unit is maintained within its defined limit values.

2. 2

   Check if the cooling fan has failed or is operating incorrectly. Verify the direction of rotation to ensure proper airflow into the unit.