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I am trying to replace my mercury thermostat with a new digital version and I have 5 wires.
Yellow hooked to Rc
Blue hooked to y
Green hooked to g
Red hooked to w
White hooked to b
Yellow hooked to green powers blower
Yellow hooked to blue powers a/c
Red and white hooked together turns on furnace burner
Is there a way to make digital thermostat work with existing wiring?
Furnace is old g.e. model 21 lg.
822
20210314_175521.jpg
 
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