Panasonic CS-VZ9SKE Service Manual page 108

17.4.3 H15 (Compressor Temperature Sensor Error)
Sensor (Thermistor) Characteristics
120
115 1 Outdoor Temp. Sensor
110 2 Heat Exchanger Sensor
105 3 Compressor Tank
100
95
90
85
80
75
70
60
65
55
50
45
40
1
35
30
25
2
20
15
10
5
0
-20 -10 0 10
Temperature (°C)
17.4.4 H16 (Outdoor Unit CT Disconnection Error)
Troubleshooting
Check the AC current flowing in the white wire on the outdoor unit
terminal. (Measure the current when the compressor is rotating almost
at its maximum operating speed.)
Check the gas pressure during the rated cooling operation.
Check for presence of gas leak.
Temp. Sensor
3
20 30 40 50
Diagnosis Procedures and Cause
Below 0.7A
Lower than the standard value
There is a gas leak
0.7A and above
Higher than the
standard value
There is no gas leak
108
Measures to be Taken
Replace the outdoor unit control board.
Replace the compressor.
Replace the capillary tube or expansion
valve.
Replace the part from which gas is
leaking.