Question for AC guys about thermostat wiring

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sedona

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I bought a new thermostat and it is the same model as the old one but the sub plate has different terminal markings.I would like to know what terminal to put the blue wire, black and whiter wires?Thank you
tc subplate.jpg
 

sedona

Sharpshooter
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this is gas heat and has 2 fan speeds.The thermostat is a white rodgers1F97-1277. On the old thermostat the blue wire went to y2.The new thermostat doesn't have a Y2 terminal.
 

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