Panasonic CS-VZ9SKE Service Manual page 84

14.16.4.2 Judge Sunlight Intensity

Based on sunlight sensor output voltage, the sunlight intensity value will be computed and logged to sunlight
intensity database.

The sunlight sensor sensitivity could be adjusted:
14.16.4.3 Judge Ambient Condition

According to sunlight intensity over a period of time, the system will analyze the ambient condition is sunny,
cloudy or night.
14.16.4.4 Temperature Shift
ECONAVI ; Detecting sunlight intensity, the unit adjust temperature to save energy.
Ambient condition
Mode
COOL/DRY
HEAT

In a room without window or with thick curtain, the sunlight sensor will judge as cloudy/night.
SUNLIGHT
SENSOR
SUNLIGHT
SENSOR
SUNLIGHT
SENSOR
Sunny
Set
temperature
INTENSITY
3
INTENSITY
4
INTENSITY
2
Night/Cloudy Sunny
+1°C
-1°C
84
-1°C