Fujitsu ASYA07LBCM - Outdoor Temperature Thermistor Error

Trouble shooting 6
INDOOR UNIT
OUTDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
OKOK
OKOK
30°C
12.620.726.935.246.662.3115Resistance Value (k )
20°C
16.1
15°C10°C5°C0°C-20°C -10°C -5°CTemperature
3.45 2.36 1.65Resistance Value (k )
50°C 60°C 70°C
5.187.97
40°CTemperature
Outdoor Temperature
Thermistor Error
Outdoor Unit Inverter PCB Circuit
Outdoor Temperature Thermistor
When Outdoor Temperature Thermistor open or short-circuit is
detected at power ON or while running the compressor.
1. Connector connection failure 2.Thermistor failure 3. Inverter PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
Check Point 2 : Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
If Thermistor is either open or shorted, replace it and reset the power.
Check Point 3 : Check voltage of Inverter PCB (DC5.0V)
Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)
If the voltage does not appear, replace Inverter PCB.
02-09
Refer to error code table.
BLACK
BLACK
BLACK BLACK BLACK BLACK BLACK BLACK
BLACK BLACK BLACK BLACK BLACK BLACK
BLA
CK
BLACK
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4
1 2 3 4
1 2 3
1 2 3
1 2
1 2
CN39
CN71 CN70 CN23
THERMISTOR (VALVE) THERMISTOR (PIPE) THERMISTOR (DISCHARGE PIPE) THERMISTOR (OUTDOOR TEMP.) THERMISTOR (HEATSINK)
2WV-A 3WV-A
2WV-B
3WV-B