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by rgsteele 4143 days ago
> They are very difficult to troubleshoot. How do you manually turn on AUX heat to test if it's even working at all? As far as I can tell, you can't! The only way we were able to test it is to take the thing off the wall and manually short the wires together (and, of course, it worked fine).

I don't own a Nest thermostat myself, but was browsing their blog out of curiosity after reading this story, and it sounds like the latest software update includes a System Test mode:

https://nest.com/ca/blog/2014/11/04/whats-in-the-4-3-softwar...