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15.4.19 F11 (Indoor Pipe Temperature Sensor Abnormality)
Malfunction Decision Conditions
When cooling operation, when indoor pipe temperature or indoor heat exchanger temperature sensor is above
45°C.
Malfunction Caused
Faulty connector connection.
Faulty indoor pipe temperature sensor.
Faulty indoor main PCB.
Troubleshooting
When abnormality indication starts again
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
Replace the indoor main PCB
Correct loose or broken cable / connector
YES
Replace the indoor pipe temperature
sensor
NO
NO
YES
The problem still occur after replacing the
sensor.
70
60
50
40
30
20
-10 0 10 20 30 40 50
10
0
Resistance (kΩ )
Sensor (Thermistor)
Characteristics
Pipe temp. Sensor
Intake Air Temp. Sensor
1
2
1
2
Temperature (°C)
Check the indoor pipe temperature sensor connection.
Does it cable connection loose or connector broken?
Check the indoor pipe temperature characteristic.
Does it conform to specification?
Caution
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