I have a Carrier Series 50QT Electric heat pump that still uses the original non programmable thermostat. I am trying to replace it with Honeywell TH6000 series programmable thermostat. The wiring on the existing Thermostat as follows: O - White, I am thinking this is the Reversing Valve? Y...

Hi All I just moved into a condo not too long ago and have a Whalen Series IV heat pump/AC. The wires from the unit are G, B, Y, W, & R. They are plugged into a Simple Comfort 2001 thermostat. In the thermostat the connections are G, B, Y, W, C, & R. The yellow wire from the unit goes into...

I'm installing a new heat pump and coils, my contractor sais I don't need to install a new air handler, is true that it will be OK?

I have a Janitrol A/C and heat pump system. I replaced the thermostat with a Lux T9000LC The A/C works fine, but the heater does not. I have it wired as follows: G - Green Y - Yellow W - White RH - Pink B -

I have a Maple Chase SaverStat thermostat on a Lenox heat pump. The thermostat and heat pump are ten years old. Recently when the heat pump comes on the Aux. light on the thermostat also goes on (not the emergency heat light). I have checked and the auxiliary heat strips and they are not heating...