Panasonic CS-RZ25TKR Service Manual page 129

17.4.14 H59 (Human Activity Sensor Abnormality)
Malfunction Decision Conditions

Feedback signal of human activity sensor.
Malfunction Caused

Feedback signal is fixed at 0 VDC or 5 VDC continuously for 25 seconds during ECONAVI or AUTO COMFORT
operation.

Feedback signal is detected during ECONAVI or AUTO COMFORT off.
Troubleshooting
When abnormality indication starts again.
Check the connector connection:
Turn off the power.
Check the connector connection.
Is the connector connection normal?
Check if the feedback signal of human activity sensor
(pin 2 and 3) is normal.
When no motion, feedback is 0 V.
When motion detected, feedback is between 1.5 VDC
to 2.5 VDC.
YES
YES
129
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
NO
Connector poor contact.
Correct the connection.
NO
Defect in human activity sensor.
Replace the human activity sensor.
Defect in outdoor unit PCB.
Replace the outdoor unit PCB.