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Okay... After reviewing your new photos, I think I have it figured out. This is what your system looks like You'll have to excuse the glitter pens, it's the only thing I could find on my wife's desk. It's pretty simple actually. When a thermostat calls for heat, the valve for that zone opens, and the boiler is also signaled via the auxiliary switch in ...


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The feature you want is referred to 'Auto Changeover". But this feature is usually only on the higher end programmable thermostats now.


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A heat pump thermostat prefers to operate the heat pump under "usual" conditions as that is expected to be less expensive. It will invoke the back up (or "emergency heat") when any of several conditions occur: The current indoor temperature is more than 4 °F/2 °C cooler than the temperature setpoint. This is the blockhead approach taken by ...


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According to the schematic, the B terminal does appear to be connected to the transformer. I'd actually trace the wiring in the unit just to confirm, but based on the schematic it looks good. You'll want to make sure the transformer has enough power to supply the additional load of the new thermostat, but typically it isn't a problem. If you hook up ...


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My A/C stopped working because the batteries in my (Honeywell) thermostat needed to be replaced. I replaced them and plugged it back in the wall mount. The A/C still did not work, but the LCD lights were on. I had to remove the face plate and replug it back into the mount. This time I pressed the center of the LCD screen and got it fully connected which ...


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Did some further sleuthing and found the capacitor on the unit is shot. Thanks to all for the input.


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Check the breaker again by replacing it with a known good one. This is assuming that you know how to disconnect power to the breaker in question! Either buy another breaker or find one nearby that has the same amp rating (mine was the oven/ range). I had the same problem not too long ago. Breaker wasn't tripped, resetting had no effect; only replacing it ...


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Since you haven't supplied much detail, I'll have to use nonspecific examples based on typical installation methods. Furnace and Condensing unit If you have a setup where you have a furnace, and an outdoor condensing unit. The wiring will be similar to this (Note: This is a basic overview, not actual wiring). Basically, the R wire provides power to the ...



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