Panasonic CS-VZ9SKE Service Manual page 107

17.4.2 H14 (Indoor Unit Intake Air Temperature Sensor Error)
Troubleshooting
Check the ambient temperature of the indoor unit during operation.
Check for bad connection of the connector of the indoor unit intake air
temperature sensor.
Check for the characteristics of the sensor.
Refer to the characteristic table for electronic circuit diagram.
(Remove the connector and check the resistance value of the sensor.)
For some models, the sensor is not connected by a connector but it is directly soldered to the board.
In this case, replace the control board.
Sensor (Thermistor)
Characteristics
70
1 Pipe Temp. Sensor
2 Intake Air Temp. Sensor
60
50
1
40
2
30
20
10
0
0 10
-10
Diagnosis Procedures and Cause
Below 46°C
No abnormality is observed
No abnormality is observed
20 30 40 50
Temperature (°C)
46°C and above
Disconnection/Imperfect
connection of the connector
An abnormality is
observed
107
Measures to be Taken
Improve the ambient temperature.
Fix the problem.
Replace the indoor unit intake air
temperature sensor.
Replace the indoor unit control board.