Heat Pump Reversing Valve Wiring Diagram. Valve is wide open heating at start of each cycle valve controls to a fixed position depending on speed and ambient temperature for 120 seconds. If you have a trane carrier goodman lennox ducane heil fedders amana the red wire should always come from the hot side of the volt transformerview and download trane 7contas42da users manual and.
When heat is needed it reverses the action with a reversing valve and will remove. 4 way reversing valve with operating control used for heat pumps. The system has been working fine all summer for cooling.
Condenser fan turns on.
Ruud and rheem reversing valve powered in heating mode 1 heat 1 cool thermostat. With reversing valve and unit operating in the cooling phase. The valve manufacturer sets which state stands for heating and which stands for cooling so there can be variations between valves. Lets begin by trying to gain an understanding of the reversing valve and its function.