Reversing Valve Wiring Diagram. Ac repair reversing valve solenoid failure. This is how the heat pump changes modes between heating and cooling.
A reversing valve is usually found close to the compressor or condenser of the heat pump. Trane heat pump thermostat wiring color code honeywell 5000 wiring diagram honeywell thermostats thermostat wiring honeywell if you have 5 wires for your nest thermostat the blue wire is most likely a common wire or heat pump reversing valve wire. Disconnect the wires from the old thermostat one at a time.
Ruud however has its reversing valve energized in heat.
This construction of a reversing valve makes it hard to fix and replace. The unit cooled great for about 30 minutes. This wire is usually not connected to the indoor airhandler. How to replace a reversing valve.