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Central Air Conditioning Unit and Heat Pump Maintenance

By , About.com Guide

7 of 7

Power On Sequence


To power the unit back on after it has been shut off more than three hours, proceed as follows:
  • Switch the thermostat inside your house to the "off " position.
  • Restore power at the outside electrical disconnect box and service panel.
  • Turn the thermostat to "cool" to power the unit back on.

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