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Press the fan icon until the light for the percent desired is on. TO TURN THE ERV OFF: Press the fan icon until all lights are off. The control is off. The ERV motor is de-energized. (Power is still persent inside the unit. Always unplug cord from outlet before servicing!) GENERAL SETTINGS: For systems installed in an area with high humidity. The Percent Timer should be set to deliver the Minimum Ventilation Requirements. VACATION SETTINGS: For systems installed in an area with high humidity. If