Thanks. Yes, I have turned off standby mode, and yes, this is well after the machine has been on for over an hour. I leave my machine turned on all day, attached to a smart surge protector, and have been checking on it randomly. About ¾ of the time when I check, it is within a degree of the target temp, and I often see it bumping up or down slightly (I assume this means the PID is properly stabilizing), the other ¼ of the time, it will be off by several degrees, and every time this happens, it continues to slowly fall until it hits around 83c, and then goes back up.
I tried to upload a video showing the settings but if I compress it down to fit within the size limit, the text is unreadable. My values are: KPc 0.2, KIc 0.07, KDc 10, Bc 30, KPs 2.0, KIs 0.0, KDs 0.0, Bs 1, EC 10, ES 0, F01 0, TR1 1, TOT n/a, BLS1 3, BLS2 3, BLP1 5, BLP2 5, PRG 6.
The issue seems to still be a problem even after doing a factory reset to default LCC settings.
Could you tell me how the temperature is SUPPOSED to behave while the machine is idle (say 30+ minutes after pulling a shot, with eco mode off)? Does your machine stay exactly at the set temperature? Does it fluctuate +/- a degree or 2? Does it dip several degrees and then come back up?