Can't figure this 3 wire system out or find anything in postal about it

Hvac Common Wire Color

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Thermostat wiring color code decoded I was configuring my thermostat, my climatemaster ac started running Home wiring common wire

Electrical Wiring Color Coding System

Can't figure this 3 wire system out or find anything in postal about it

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Thermostat wiring color code decoded - YouTube
Thermostat wiring color code decoded - YouTube

Electrical Wiring Color Coding System
Electrical Wiring Color Coding System

I was configuring my thermostat, my Climatemaster AC started running
I was configuring my thermostat, my Climatemaster AC started running

Thermostat Wire Colors 5 Wire
Thermostat Wire Colors 5 Wire

Home Wiring Common Wire
Home Wiring Common Wire

Can't figure this 3 wire system out or find anything in postal about it
Can't figure this 3 wire system out or find anything in postal about it