Panasonic CS-NE12PKE, Руководство по обслуживанию

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15.4.7 H23 (Indoor Pipe Temperature Sensor 1 Abnormality)
Malfunction Decision Conditions
•
During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger
temperature sensor 1 are used to determine sensor errors.
Malfunction Caused
•
Faulty connector connection.
•
Faulty sensor.
•
Faulty PCB.
Troubleshooting
Sensor (Thermistor)
Characteristics
70
60
50
R
esi
st
an
ce
(k
Ω
)
Temperature (ºC)
40
30
20
10
-10 0 10 20 30 40 50
0
1 Pipe temp. Sensor
2 Intake Air Temp. Sensor
1
2
When abnormality indication starts again
Check the outdoor air temperature sensor:
● Plug out connector from the outdoor unit PCB
● Measure the resistance of the outdoor intake air
temperature sensor
● Defect in outdoor intake air temperature sensor
● Replace the outdoor intake air temperature
sensor
● Detect in outdoor unit PCB
● Replace the outdoor unit PCB
For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component. Check the connector connection:
● Plug out connector from the indoor unit PCB
● Measure the resistance of the indoor pipe temperature
sensor 1
Is the connector connection normal?
● Connector poor contact
● Correct the connection
YES
NO
Is the measured resistance of the outdoor intake air
temperature sensor matches the value specified in its
characteristic chart?
NO
YES