Auma Actuator come with Remote Wall-mounted Controller Testing  

Hi. There are quite a lot of factors that made the actuator malfunction. If the display was not power-up then might be an issue with the incoming supply or the power supply unit issue. If the display is ON, check for any warning or fault appeared. Share me on the details symptom for better guidance.

Hi. When the display shows 'undefined', check for any warning or fault appeared and check the firmware version. Share me the actuator details.

Hi. 1) Please check the probe end-to-end connection 2) If all correct, then check the fuse inside the fluke calibrator. Wrong probe end-to-end connection can make the fuse to burn.