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Heat Pump Thermostat Wiring Made Simple - MSNRemove the old thermostat Using a small screwdriver, remove the wires from the terminal block. Make sure you have taken a picture, to identify later where they were attached. Label each wire with ...
For a 6 wire device, the extra two wires are center taps and a 5 wire motor will have both center taps tied together. Measuring resistance between two wires should give you one of three readings.
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