1F56W-444 White Rodgers Thermostat

I am fairly sure this is the thermostat that I have. How do I disconnect the cooler/air-conditioner as to avoid my penguin visiting relative waking me to 55°F chills.

  • 2
    Would your relative notice if you turned the main switch of the AC unit to 'off'? Or sneakier would be to trip the breaker at the panel... – Aloysius Defenestrate Apr 19 '15 at 15:32

Disconnect the wire connected to the Y terminal. This is the terminal that's energized when the thermostat calls for cool, so disconnecting the wire will prevent the thermostat from calling for cool.

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