2011 Chevrolet Volt Owner's Manual - Page 296

8-4 Climate Controls This is normal. To prevent cold air from blowing into the interior, turn off the fan control and select the vent mode and manual recirculation mode, and close the air vents. When in Fan Only mode, if Auto Defog is enabled, the air conditioning and electric heat may turn on when high humidity conditions exist. See "Climate and Air Quality" under Vehicle Personalization on page 5‑53 for more information on the Auto Defog selection. The air conditioning may also run if 0 is selected. ECO Mode: The vehicle air conditioning and electric heat are controlled to balance comfort with fuel economy. As long as 0 is not selected, the vehicle electric range or fuel economy will decrease less than in Comfort mode, but will result in moderate comfort. Comfort Mode: The vehicle air conditioning and electric heat are controlled to reach the best comfort level based on the temperature setting selected. In this mode, vehicle electric range or fuel economy will decrease depending on the amount of energy required to reach the best comfort levels. Fan Only Mode: The air conditioning and electric heat are turned off. As long as 0 is not selected, the climate control settings may not have a noticeable effect on the vehicle electric range and fuel economy. When in Fan Only mode, the AUTO indicator light will be off. When AUTO is selected in Fan Only mode, the mode will change to either ECO or Comfort. When in Fan Only mode, the air conditioning system may turn on automatically if the high voltage battery is being cooled. The climate control system could blow cold air. Climate Power Gauge When the climate mode is changed, the Climate Power gauge displays the impact that user setting changes have on energy consumption. The higher the reading, the more energy is being used.