1999 Honda Odyssey Owner's Manual - Page 141
1999 Honda Odyssey Manual
Page 141 highlights
Climate Control System Fully-automatic Operation To put the Automatic Climate Control in fully-automatic mode, press the AUTO button and set the fan control dial to AUTO, then set the desired temperature by turning the temperature control dial. You will see FULL AUTO in the system's display. The light above the button also shows you which mode, Recirculation or Fresh Air, is selected. The system automatically selects the proper mix of conditioned and/or heated air that will, as quickly as possible, raise or lower the interior temperature from its current level to the set temperature. When you set the temperature to its lower limit (60°F/18°C) or its upper limit (90°F/32°C), the system runs at full cooling or heating only. It does not regulate the interior temperature. When the temperature is set Comfort and Convenience Features TEMPERATURE CONTROL DIAL FULL AUTO DISPLAY FAN CONTROL DIAL OFF BUTTON AUTO BUTTON between the lower and upper limits, the system regulates the interior temperature to the set value. In cold weather, the fan will not come on automatically until the vehicle has been driven for a short time and the heater starts to develop warm air. Pressing the OFF button shuts the climate control system completely off. Keep the system completely off only for short periods. To keep stale air and mustiness from collecting, you should have the fan running at all times.