Hello,

My name is Alain and I had upgraded my old heat/air conditioning thermostat control devise with a Noma programmable 5 & 1 & 1 plus four settings per day. I hope that all made sense. I connected ALL four wires to the same letters the old one had? I think?
I had a great success with heating over the winter, but now I tried setting the "cooling" system for the summer and no A/C. Does anyone know the corresponding letters each wire belongs to? I have two black wires and two white?

Thank you in advance for your help

Alain

The thermostat that I installed yesterday was : the G terminal is the fan. The Rh is Heater
The C is common and the Y is the condenser (Air conditioner) The Rc is for a heat pump so there was a jumper wire there between the Rh and the Rc terminals. I hope this helps.

Quote:

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Originally Posted by AJJA

Hello,

My name is Alain and I had upgraded my old heat/air conditioning thermostat control devise with a Noma programmable 5 & 1 & 1 plus four settings per day. I hope that all made sense. I connected ALL four wires to the same letters the old one had? I think?
I had a great success with heating over the winter, but now I tried setting the "cooling" system for the summer and no A/C. Does anyone know the corresponding letters each wire belongs to? I have two black wires and two white?

Thank you in advance for your help

Alain

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Thank you Westnlas, I just reversed all the wires, and now have A/C, I hope I still have heat in the fall? I was also without a fan until I switched everything. Really appreciate your assistance.

Alain

Glad it helped. Thanks for letting me know also. They call me "Bandit"