I have now let my test run for nearly a day. Two digital temp probes - one connected to a expansion box 2 and one to PL4. Both P4 and ExpBox2 with the latest firmware. For experimental design see last picture post 4. Sample time 1 minute Temp 1 = digital temp probe P4 and Temp 2 = digital temp probe Exp Box2. The fault signal is only around 1 sec and it is only sometimes you can catch this signal with help of a sample time at 1 minute. The fault time is normally short and it is not always an alarm will be sent out. I got one alarm yesterday at 15:33.


The graph show two occasions with a faulty temp - both from probe 2 - the ExpBox2.


I think you have an issue with expbox2 and at least the digital temp.

Sincerely Lasse