Have a number of the above controlling UFH heating. It appears that one of the stats is potentially drifting in terms of its room temperature measurement. It appears to be reading higher than what in independent, calibrated probe is reading (Testo 106). Have re-calibrated the stat more than once. Wanted to ask if others had experienced this type of drifting with any kind of stat and if there were any ways of confirming some kind of issue with the circuitry?
