I have recently set up a TET-612 PID controller attached to a Honeywell VR8300a gas valve to control the mash temp on my brew stand. I have gone through the PID setup to the best of my ability (granted, that might not be much ability
) and all is well except for 2 issues.
1) Autotune has to be enabled on the PID for the system to work. Otherwise the valve will click but never open and ignite. This is really more of an observation than an issue but....
2) The real issue.. autotune stops running every 15 mins or so. It's impossible to walk away during the mash as autotune will randomly stop working and will need to be restarted. This also happens on a friends sabco brewmagic system so I am hoping its a setup issue.
Is there anything I can do to make autotune constant so that I don't have to continuously monitor it? I admit that I don't fully understand what autotune does, but as long as I can get it to stay on that is all that I care about.
Thanks for any input you can give.