Descaling Questions Anova Oven

I am wondering …Does the Descaling light go on because of a count down steam Hour Use or Is it some how actually using some type of Calcium detector? The reason I ask, if one only uses Distilled Water is
Descaling Necessary. Thanks for all Replies

I also am curious about that because I have always used distilled water.
Peter (old guy also)

Descaling is triggered after a certain number of hours of the boiler running.

Thanks Colewagoner…can you make a comment about the necessity of descaling if only distilled water is used? Thanks

We recommend descaling as the oven requests regardless of type of water used