![hvac - why does my heat pump wiring diagram show 7 wires going to the thermostat but the thermostat only says it needs 5? - Home Improvement Stack Exchange hvac - why does my heat pump wiring diagram show 7 wires going to the thermostat but the thermostat only says it needs 5? - Home Improvement Stack Exchange](https://i.stack.imgur.com/vE9Po.png)
hvac - why does my heat pump wiring diagram show 7 wires going to the thermostat but the thermostat only says it needs 5? - Home Improvement Stack Exchange
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Trane Heat Pump Wiring Diagram | Heat pump compressor Fan wiring | Trane heat pump, Heat pump, Trane
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