Panasonic CS-E7PKR Service Manual page 97

13.13.4 Sunlight Sensor

During ECONAVI operation, the sunlight sensor detects sunlight intensity coming through windows and
differentiates between sunny and cloudy or night to further optimize energy saving by adjusting the temperature.

Sunlight judgment is as following
13.13.4.1 Sunlight Intensity Reset

The sunlight intensity will to reset to zero (no sunlight condition) when
Each time ECONAVI is activated.
o
Setting temperature is changed.
o
Operation mode is changed.
o
13.13.4.2 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:
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