Sunday I had a brewday with my father, after brewing we’ve transferred our wort to our fermenters, pitched the yeast and placed them in our isolated fermentation chamber.
The chamber is 3x3m and has an old wall heater and an airco unit connected to our BrewPi running photon version 0.5.2 and latest BrewPi software (release of 23 sep 2017) commit 2282837df5f0bb171ae58302b7780d5d50d213e2.
The BrewPi screen is connected via USB to the Pi (No extra PSU connected).
Since Sunday we seem the following odd issue occuring.
The set chamber temp of 22C suddenly drops (and sets!) itself to 15C, then it changes back to 22C and climbs and holds the temp.
Seems this is happening since the transfer last Sunday…
Since yesterday the fridge setting is set to 20,5C for a better fermentation profile (we’ve divided our batch into two barrels one with 20L with Wyeast 1214 XL and 40L with Safbrew BE-256 to see and taste the difference).
Anybody knows why this is happening?
Attached is the log of our BrewPi