So not to beat this to death, but I though I had some extra time to do the fix, with the weather here (minnesota) staying above 32....but it dips. So I didn't have super high hopes when I got hope from work just now, but to my surprise, the tub was running, maybe through its maintenance cycle, I don''t know, but the water wasn't icy, so I don't know if it has a freeze prevention on it, but either way it was running. OH still flashing, though.
Does that solidify any evidence?