EC is set at 10. Not sure exactly what this does. Does this have any impact on temp at the group head, or does this just deduct 10 from the actual boiler temp, to estimate group head water temp.
FYI, the boiler is set at 107. When I use a thermister probe for temperature measurement of the water as it leaves the group head screen (with no portafilter in place), I measured 96 to 97.
My mistake on the coffee. This particular pound bag was roasted on July 26, not frozen, and opened on July 28. It went into a canister that has an inside disk that slides down then locks into place, to reduce airspace, but is probably not airtight.
Used up this coffee on August 1, and have just this August 1 evening defrosted a bag (that was roasted on July 26 and frozen on July 28) for today’s misadventures.