Dual Zone Air Conditioning (A/C) System Description. Buick Riviera 1998

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1998 🢒 Riviera 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Dual Zone Air Conditioning (A/C) System Description

The electronic A/C system consists of the following 4 major systems:

•	The refrigeration system

•	The heater system

•	The air distribution system

•	The mode/temperature control system

The driver may select the following functions from the system control panel:

•	The desired interior temperature (the SET temperature)

•	The fan speed

•	The mode of operation

One of these modes is a fully automatic mode in which the system determines the following conditions:

•	The appropriate air intake location

•	The appropriate air discharge location

•	The fan speed

•	The discharge air temperature according to the driver-selected temperature

The system's network of sensors also provides this information.

The Oldsmobile electronic A/C system uses a cycling clutch orifice tube (CCOT) type refrigeration system. A variable displacement orifice tube (VDOT) type refrigeration system is used with the Buick.