2011 Chevrolet Volt Owner's Manual - Page 297

Climate Controls The air conditioning may also run if 0 is selected, regardless of the climate mode. Automatic Operation Air Conditioning/Heat Status Indicators The air conditioning/heat status displays when the air conditioning or electric heat is being used. The air conditioning and electric heat could be on at the same time when dehumidification is required in ECO or Comfort modes. In Fan Only mode, occasionally the air conditioning and/or heating status will be on if the Auto Defog function is enabled and high humidity is detected. See "Climate and Air Quality" under Vehicle Personalization on page 5‑53, for details on enabling or disabling the Auto Defog function. The system automatically controls the fan speed, air delivery mode, and recirculation to heat or cool the vehicle to the selected temperature. When the AUTO indicator light is on, the system is in full automatic operation. If the air delivery mode, fan speed, or recirculation setting is adjusted, the AUTO indicator turns off and the selected settings display. For automatic operation: 1. Press AUTO. 2. Set the temperature. An initial setting of 23°C (74°F) is recommended. Allow the system time to stabilize. Adjust the temperature as needed. 8-5 Q / R (Temperature Control): Press to increase or decrease the temperature. Auto Defog: The system will monitor high humidity inside the vehicle. When high humidity is detected, the climate control system may adjust to outside air supply and turn on the air conditioner or the heater. The fan speed may slightly increase to help prevent fogging. When high humidity is no longer detected, the system will return to its prior operation. To turn Auto Defog off or on, see "Climate and Air Quality" under Vehicle Personalization on page 5‑53.