C274 Control box fan error

You may find the following links helpful in addressing this issue:

If you unable to resolve the issue, log in to http://myUR.universal-robots.com and create a new case.

C274A1 Fan is not running

The control box fan must be running to prevent the control box from overheating

Ensure the fan in the control box can rotate freely and the connector is attached. The control box fan is located between the air filter and the energy eater in the control box. See the Service Manual for details.

C274A2 Monitoring data timed out

The monitoring signals for the fan speed was not received by the system in a timely manner

Try the following actions to resolve the issue: (A) Conduct a complete rebooting sequence, (B) Update software, (C) Contact your local Universal Robots service provider for assistance