Chevrolet 2011 Volt Owner's Manual page 274

8-4 Climate Controls
Fan Only Mode: The air
conditioning and electric heat are
turned off. The climate control
settings may not have a noticeable
effect on the vehicle electric range
and fuel economy.
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.
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 selected, 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 48 for
more information on the Auto Defog
selection. The air conditioning may
also run if defrost mode is selected.
ECO Mode: The vehicle air
conditioning and electric heat are
controlled to balance comfort with
fuel economy. In this mode, 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.
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.
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 heater
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