I'm planning to connect several temperature sensors to my Cerbo GX to monitor engine room temperature, fridge, freezer and sea water. However, when connecting my first PT100 element to my Cerbo, it only states "Reverse polarity" as status and no temperature. I have checked the PT100 element, and it works well. I have also tried to switch polarity on the connectors, but still it does not work. In the status it also states 4,2V, which is strange as it should state resistance. Any clues?