Upstairs controls Down Stairs after new thermostat install
HEy. I have a two story house with a heat pump ( I think). There is a thermosat upstairs and one downstairs. I was told there is a damper in between to control air flow. I just changed the original thermostats to two new programmable Honeywells. The upstairs thermostat now controls the downstairs damper, and the down controls the upstairs. It is getting COLD in the house too. There was a Rc, W, O, Y, G and C wires. I hooked the W and O together since I have a heat pump. Can anyone help??