Help installing thermostat with c wire please

[araomd]

ODTers, looking for some help swapping out my old thermostat for a new one. The old one was a Honeywell which had batteries and the new one is supplied from thermostat.

Here is a picture of the old thermostat, 4 wires.

The new one needs a control wire, and it looks like when the house was built (1992) they left a second wire in the wall with a red and white wire. I hooked the colored wires to the same connections:

And I hooked the white wire to the 24V C connector because this is how in looked in my Trane furnace:

I notice the red wire from going to the Y post on this end (?) and the control wire is the white one.
New thermostat doesn't power up. Any suggestions before I have to call the HVAC guy?

 

[araomd]

captdave77 ?

 

[captdave77]

I can't see the pictures.

 

[araomd]

I can't see the pictures.

Link to pics, tried again below.

https://docs.google.com/document/d/1PduhKc5Tfs185a48qLx7pMVRBpsxfGmtKynaK3B6CPw/edit?usp=sharing

 

[araomd]

Here is a picture of the old thermostat, 4 wires.

The new one needs a control wire, and it looks like when the house was built (1992) they left a second wire in the wall with a red and white wire. I hooked the colored wires to the same connections:

And I hooked the white wire to the 24V C connector because this is how in looked in my Trane furnace:

 

[karlvv30]

This is funny. Not haha funny. The smartest guy on odt needs help with his thermostat. I cant do it either.

 

[araomd]

This is funny. Not haha funny. The smartest guy on odt needs help with his thermostat. I cant do it either.

Lol! Youtube made it look so easy....

 

[TLB]

A few of things:
1. The red and white 2 conductor wire at the furnace likely follows the copper lines and goes to your outdoor unit to energize the contactor. It is not likely the same wire you have at the thermostat, check closely. If you find the end of the 2 wire from the thermostat then you can make one of them a dedicated “common” to power the thermostat. Just pull a new control wire if accessible to do so....
2. If not enough wires; and it is a gas furnace then you can abandon the “G” terminal which is for fan-only operation, and use the green wire for the common at both ends. Jump Y to G at the furnace board terminals to get fan operation with a/c. No more fan-only control though.
3. Check your new thermostat instructions, you may need a jumper from RH to RC on that one to power both heat and cool operations.

 

[jeep78]

That product appears to be a networked and/or wireless device. Do you have the installation instructions for it?

 

[araomd]

A few of things:
1. The red and white 2 conductor wire at the furnace likely follows the copper lines and goes to your outdoor unit to energize the contactor. It is not likely the same wire you have at the thermostat, check closely. If you find the end of the 2 wire from the thermostat then you can make one of them a dedicated “common” to power the thermostat. Just pull a new control wire if accessible to do so....
2. If not enough wires; and it is a gas furnace then you can abandon the “G” terminal which is for fan-only operation, and use the green wire for the common at both ends. Jump Y to G at the furnace board terminals to get fan operation with a/c. No more fan-only control though.
3. Check your new thermostat instructions, you may need a jumper from RH to RC on that one to power both heat and cool operations.

Thanks! The main control wire that was hooked up to the old thermostat had multiple unused wires, can I just add one to the control post at the furnace with the one that is already on there and then to the thermostat?