I have a motor with three winding taps. One for high, medium, and low. I want some sort of contactor module that can switch one line in between each of these windings, obviously only one at a time.
I’ve thought about using two relays. when power is off to both, then the middle winding would get power, the first one would ‘divert’ power to the low speed winding, and the second would divert to the high speed. But that seems rather hacky and it won’t retain memory, which I kind of want.
The motor is in my HVAC indoor air handler. I want to reduce speed on the indoor air handler when the heat pump is running. UNLESS the electric furnace is also running, in which case I want it at medium ( as it currently is hard-set-to). And maybe in the summer I’ll kick it into high during AC mode for extra air movement.
This relay module needs to switch 220VAC ideally. And if it runs on 220 as well that would be fantastic. Otherwise I need to pull a neutral to my air conditioner, which it doesn’t normally have.