Hi Elco,
Just for info, today just out of curiosity I swapped the cat5 cable to a different port on the spark. Within a few minutes I noticed the same cooling issue occurring but this time in Fridge 1.
I couldn’t seem to halt the process except by power cycling the Spark.
I ran Wireshark for a minute during this issue.
Test2.pcapng.zip (484.0 KB)
Dave.