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Discussion Starter #1
Hi there. Newbie here. Great site.

Here is my issue. I'm a first time home owner trying to impress my wife with my handyman abilities. (my first mistake)

One of the things we wanted is a new thermostat, you know a nice digital one. Bought a Honeywell RTH230. Standard entry level device.

I installed the thing a couple of months ago. Since then, we have had pretty mild weather (for chicago) although it felt kind of cold at times. Didn't notice anything funny until now. Its gotten really hot out. Our AC is not working. So I'm trying to troubleshoot and I realized that the compressor outside is not working.

my wife had someone come to take a look. This guy says that I wired up the thermostat wrong. he didn't have time to stay and fix it. we have american home shield sending someone tomorrow, but tonight we are really suffering. Maybe someone can help.

This is the wiring of the old thermos before I unwired it



This is the new thermostat until tonight:



This is the new thermostat after I've played with it a bit:



You can see that the red wire was not used until tonight. the final version gets the furnace to work but the compressor outside is not firing up. cant figure out why.

Any thoughts?
 

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Discussion Starter #2
edit post

hi. on my previous post, please reverse the last 2 images. I mislabeled them.

Also, sorry about the large pics.
 

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It seems you've made ​​the connections as it was in the old thermostat . you will have to check in the furnace.
 

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Change the blue wire to yellow.
 

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I'm Your Huckleberry
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Old wiring:

white wire is 24 volts (power)/r terminal
blue wire is cool/y terminal
yellow wire is heat/w terminal
green wire is fan/g terminal

it should be the same on new stat.

white wire is to r terminal
blue wire to y terminal for cooling
yellow wire to w for heat
green wier to g terminal for fan to come on in any call.

no red wire used except internally as jumper between rc and rh. The white wire needs to be on the r teminal as right now you are feeding heat call full time so it should stay on even when stat is not calling for heat which is wrong.
 
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