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OK, besides the link to Honeywell, you've kind of lost me on those last two posts. Not sure if you are saying that this would work with the tstat I have now, or if you are saying that's how it would...

So further researching this (now that I know what it is), it seems that a 3 wire zone system is not an easy tstat to replace with off the shelf options... Do you know of any way to make a regular...

OK, so I checked the fuse, it doesn't appear to be blown. Closed that back up. It should be noted that the other zones seem to be working fine. It's just this one zone that I tried changing that...

Of course not! I just told my wife to come in with a wooden pole if she smelled anything funny ;)
The old stat doesn't seem to have any kind of fuse. If you wouldn't mind, here's a bunch of pics of...

I am (trying to) install a Honeywell prog. Thermostat. My old stat was an Automag (fairly old) and had three wires attached to it. A Red wire labeled (R), White (Y) and Blue (B). So, I don't have...