Chevrolet Sonic 2014 Owner's Manual page 138

138 Climate control
9 Warning
More frequent maintenance of the
air filter is required if the driving
circumstances are dusty roads, air
pollution areas, and frequent
unpaved roads.
The filter efficiency is decreased
and the bronchus is badly
affected.
Air conditioning regular
operation
In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a
month, irrespective of the weather
and time of year. Operation with
cooling is not possible when outside
temperature is low.
Service
For optimal cooling performance, it is
recommended to annually check the
climate control system:
■ Functionality and pressure test
■ Heating functionality
■ Leakage check
■ Check of drive belts
■ Cleaning of condenser
■ Evaporator drainage
■ Performance check
Caution
Use only correct refrigerant
9 Warning
Climate control systems have to
be serviced exclusively by
qualified personnel. Improper
service methods may cause
personal injury.