AUX 2 "Waste not" for hot water heating -- DC -- Mysterious Failure

[ebenbayer]

Hi All!

I'm using my Classic on a hydro set up in hills of New England; The hydro runs all the time, or at a reliable offset frequency (I have a catchment at the top, and use an Arduino, pressure sensor, and actuated ball valve at the hydro to modulate an ~10-60 minute on-off cycle that calibrates the incoming flow to the flow rate of my installed nozzles.)

I use AUX 2 and a DC water heating element as my diversion load, waste not hi. This has been working great and generally the load on the element is constant, but low (a few hundred watts).

This morning I noticed that the classic had let the voltage float very high, and was not actuating the SSR.

I didn't have time to check the contacts to see if the classic was actually working and the SSR was dead or vice versa, but I did try and force it hi and did a restart. Surprisingly when I checked in a few hours later (via mymidnite-- very cool!) it had come back on, and has been working since.

I'm sort of hoping the problem re-occurs so I can diagnose it, but I figured I'd ask here to see what the chances are it could be software related? The only reason I would consider this possibility is that in the log the diversion failure happened right around midnite, when the classic restarts.

Thoughts?

E

[boB]

I just saw this when looking for some other waste not postings...

If the Classic is told to reset at midnight but having the autorstrt set in TWEAKS, the the
aux output that is set for waste not would definitely turn off for that 30 seconds or
whatever time it took to restart and reboot.  The aux outputs are inactive while
resetting or when power is off of course.

If the aux output was inactive for a long time and not related to an auto-restart,
then I definitely want to know about it.

thank you !

[ebenbayer]

Well this is stretching my memory a bit-- but I do believe I eventually traced this problem to a faulty SSR-- nothing on the classic end--  performance has continued perfectly since then; have added another classic for solar since then-- great products!