Sorry to bump, as opposed to editing a previous post (John, please let me know if this is verboten, and I'll amend accordingly), just hopeful someone with more electrical know-how than I have, can suggest a thought.
Well - wired according to: (warning, pdf), page 8
Heats up very quickly - the SSR gets really hot, and I can see how one has to watch scorching along the milk. (I set password 89, inty=PT10.0, and for some reason outy =0, so I reset to outy=2; I also tried the PID regimen described above, pass=0036, P=000.2, I=1999, and D =000; NOTE: Yoav, if you're watching, in my unit, "D" does not allow 0000, just a blank first digit, then 000...presume this is the same). It pings and heats up fine, and kicks off if PV>SV.
However, the unit was smoking. Bad. I freaked, as there's nothing but hi-temp, fiberglass insulated 16 gauge wire (the gauge of the unit itself, so thought this would be a better choice, in terms of drawing heat, then 18 gauge). Disassembled, ran again, couldn't see anything on any wire or junction.
What I did find is that the fiberglass itself, all along the heating element band, was getting seriously fried. Burnt. What's up with this? Is there something simple-stupid I'm missing here? Is this some weird thing that can be cured, re: the fiberglass?
I hear a short buzz concomitant with the "on" light of the PID and 3-relay light of the SSR pinging on. Eventually, the system stops pinging, and the lights and heat just stays on.
Is this a problem? Is it supposed to continually "ping" on and off, so that it has a chance to cool down, or does it eventually just stay "on" until PV=SV?
Anyway, totally lost as to what's going on. I would have thought the heat would be expected, not sure why the fiberglass would go gonzo; any thoughts on why this would be "too much" such that the fiberglass surrounding the band smokes like this?
The only thing I could figure out is that perhaps the fiberglass isn't supposed to directly touch the metal band; there are some ceramic "spreaders" in several places, attached to the metal heating element, with a metal prod sticking out away from the element, presumably to keep the fiberglass away. Yoav...is any of this something you ran up against?
Any help, appreciated.