Thermostat Wiring for heat pump) - DoItYourself.com Community Forums
electrical - If my heat pump does not have a neutral, do I still need a neutral wire? - Home Improvement Stack Exchange
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Honeywell T-Stat / Rheem heat pump: L, E, Aux, W1, W2 wiring questions | DIY Home Improvement Forum
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
Verify correct wiring for Heat Pump and Nest Thermostat : r/Nest