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hi i am dan i can help you with this. what model thermostat are you installing and how do you have ther wires connected. what terminals?
if you have extra wires you will need to connect one to common in the furnace or zone pannel and then to C on the thermostat.
no that brown cable will most likely go out to the a/c unit outside not the thermostat upstairs. do you have 5 wires in the wall at the thermostat upstairs?
do you have a zone pannel somewhere outside of the furnace?
if you follow the white cable it should lead to it.
do you have two seperate systems or one system and 2 zones?
can you post some pictures of the area around the furnace. is the furnace separate from the a/C do you have a boiler for heat?
how many wires are at the thermostat upstairs and what were they connected to on the old tstat?
what terminals were they on and what wire conections are at the first floor tstat
no i did not get any video
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