Hi, I bought a house and the installed thermostat was ugly, partly painted, and I couldn't figure out how to work it. I have installed a thermostat I had previously used in an apartment.
When I looked at how the old one was wired it was not what I expected. The colours of the wires did not match the labels. The furnace and fan still worked, but I still wanted to replace it.
This is what it looked like: (the blue text is the old owner's hand writing. the black test is what is actually on the stat. i just made it more visible in the pic)
Since it worked, I figured I would install my new one the same as this one.
Here is a pic of the new one:
When using this new one, the furnace works, but it seems to turn on and off too much. One change I did notice is that when the system turns on, the fan starts blowing first, which is normal. But then it turns off, and ten seconds later the furnace and fan turn on. It's always 10 seconds.
Is my setup okay? I'm not sure why the wires would be different...
Here is a pic of my furnace, I'm not really sure where the wires from the stat go to be honest.
Am I okay?