I just installed an A/C unit, and wired in the thermostat as required. When the therostat calls for cool, nothing happens. I've tried everything from changing the wires out, to a new therostat, and still nothing.
I wired it as so... Red to Red, White to White, and the heat works fine. Green to green, and the fan doesn't work when set to the on position. Black to yellow, for the air, and white to common for the air. Its all wired properly, and still the air doesn't come on or the furnace. Am I missing something? The furnace is a Trane XR80, and the air is a Ruud. Thanks... James

I just installed an A/C unit, and wired in the thermostat as required. When the therostat calls for cool, nothing happens. I've tried everything from changing the wires out, to a new therostat, and still nothing.
I wired it as so... Red to Red, White to White, and the heat works fine. Green to green, and the fan doesn't work when set to the on position. Black to yellow, for the air, and white to common for the air. Its all wired properly, and still the air doesn't come on or the furnace. Am I missing something? The furnace is a Trane XR80, and the air is a Ruud. Thanks... James