See also:

Automatic operation
Cooling and/or dehumidified heating (AUTO) This mode may be used all year round as the system automatically works to keep a constant temperature. Air flow distribution and fan speed are also cont ...

Manual operation
Fan speed control Turn the “ ” fan speed control dial to manually control the fan speed. Push the “AUTO” button to return to automatic control of the fan speed. Air recirculation Pus ...

Engine block heater (if so equipped)
Engine block heaters are used to assist with cold temperature starting. The engine block heater should be used when the outside temperature is 20°F (-7°C) or lower. WARNING ● Do not use ...