Drying the Evaporator
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Set the temperature selector control to maximum heat and select maximum blower speed using the blower switch. Start the engine. Allow the engine to run for two minutes. Switch off the engine. Allow the agent to act for 30 minutes. Start the engine. Open the car windows. Switch on recirculation, blower fan switch on maximum speed and temperature selector to maximum heat. Allow the engine to run for ten minutes. This allows the agent to dry and form a protective layer.