Fibaro Universal Sensor - Temperatures stop working

[Kifo]

Over the years I had 3 Fibaro Universal Sensors installed in my system, each with 4 temperature sensors.

After a random (1 week to 15 months) time they stop working. Everything else in these modules works OK. The only way to get the temperature readings back is to exclude and re-include it in the z-wave network (with all the related hassle like changing IDs and device names etc.).
- Who experienced the same behavior?
- What causes it (EMI?)
- Any easier way to get the readings back?