Panasonic CS-C12PKV, Service Manual

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13.15.1.10 Human Activity Sensor Abnormality
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Abnormality detection:
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Connector disconnection / Wire cut abnormality
ƒ Sensor judge Hi level continuously for 25 seconds
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Circuit abnormality
ƒ 70 seconds after power ON, if human activity sensor judge Lo level continuously for 25 seconds
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Error Code judgment
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When abnormality happened, internal counter increase by 1 time.
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Human activity sensor power OFF, retry after 5 seconds.
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When the human activity sensor maintains normal condition for 120 seconds, the counter reset or AC reset.
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When abnormality counter reached 4 times, No TIMER indicator blinking.
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When error code happened, the unit is able to operate without AUTO COMFORT / ECONAVI.
13.15.1.11 Human Activity Sensor Check Mode
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To enable human activity sensor check mode, during ECONAVI operation ON:
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During ECONAVI is ON, when CHECK signal received, if either sensors has abnormality, the 4 times abnormality
counter is ignored, ECONAVI Indicator will blink immediately and error code is memorized.
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The unit could operate without ECONAVI or AUTO COMFORT.
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The ECONAVI indicator blinking could be cancelled by pressing ECONAVI button again.
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If the human activity sensor has no abnormality, the CHECK process will end and continue with normal operation.