Replace Carrier tstatccshp01 builders standard thermostat with Honeywell rth7500 series and wiring not matching Does O wire go to Aux..? fan working but no cool air.

Did you try E too aux and x1 to c?

System is comparable to a Mode button. Press the left button once and the left button becomes System and middle button becomes Fan. Repeatedly pressing the System button will scroll through your choices. I cannot attach the owners manual. Here is the web address that I got it from: http://www.manualowl.com/swfviewer/viewer.php?CursorToolsVisible=true&FitPageOnLoad=false&SwfFile=%2Fmanualswf%2Ephp%3Fid%3D134114%26manual%5Ftype%3Dproduct%26d%3D71c664def9559052f984a338dab72b2b&ViewModeToolsVisible=true&FitWidthOnLoad=true&Scale=0%2E6&ZoomToolsVisible=true&ZoomTransition=easeOut&localeChain=en%5FUS&FullScreenAsMaxWindow=true&SearchToolsVisible=true&ZoomTime=0%2E5&NavToolsVisible=true&ProgressiveLoading=true&ZoomInterval=0%2E1

You have a control board on your furnace, there is a 3 amp fuse there, that 3 amp fuse needs to be replaced. You most likely touched a wire even by accident and blew the fuse. You will have to remove the door \panels to get at it. It looks like a normal car fuse

Your original wiring configuration seems to indicate that you have an air conditioner (not heat pump) and either a gas or electric furnace. If this is the case you may need a different thermostat for your application.

Jumper R to Rc and hook hot wire from transformer to R usually red wire
O = Reversing valve probably white or orange If you get heat when calling for cool or Vice Versa then switch wire from O to the B terminal.
Y = Contactor usually yellow
G = Blower usally green
Jumper Aux to E need to go to unit and use the wire that goes to your Auxiliary or 2nd stage heat
L = Light if you have this terminal on your unit then hook it up.
C = Common from transformer usually black, if you have this terminal on your unit hook this wire up.
Make sure you go to your unit and only hook these wires up if they go to these locations.

Heat/cool wires crossed. RC- is red cool make sure the batteries are good and room temp is higher than cool setting. good luck

if the out door unit has been working carefully jump red to green the fan should come on if not problem is bad fan motor or capicitor or fan relay hope this helps

Hook up o to o/b, then in the installation programming set the change over valve to energize in cool. Then hook up w to aux. Good luck.

return t-stat for another with o/b terminals

Make sure G from indoor unit goes to G on thermostat for fan continous fan, if that doesn't work and you have 24 volts to R and C then the t'stat is bad.
For 2nd stage heat or aux.heat, on the indoor unit you need to make sure the wire W2 from the indoor unit goes to W2 on t'stat.
You don't need any wires from W1on the indoor unit to W1 at the t'stat because with a York heat pump Y1 is the contactor which turns the compressor on and you will get 1st stage heat, and for cooling the t'stat will also bring on O which is the (reversing valve) or cooling changeover relay for the cooling mode.
C = common usually black wire
R = hot usually red wire
Y or Y1 = contactor
W1 = 1st stage heat not needed for heat pump
W2 = Aux. heat indoor heat
G = fan
O = Cooling changeover relay
B = Heating changeover relay
L = System monitor
E = Emergency heat relay