X-Ray Tube Malfunction on XRF Supermini 200

The X-ray tube is not turning on, and we are receiving three error messages: Error No. 20: Impossible to turn on the X-rays. Error No. 72: The X-rays have been turned off because the X-ray generator error (APF) was detected. Error No. 29: The stabilized temperature has become lower than the monitor lower limit.