Trouble shooting 17
OUTDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
OKOK
OKOK
30°C
103176233312Resistance Value (k )
20°C
134
15°C10°C5°C0°C-10°C -5°CTemperature
39.6
25.6 17.1Resistance Value (k )
50°C
60°C 70°C
11.6
80°C
8.12 5.78
62.980.3
40°C
Temperature
2-way valve Temperature
Thermistor Error
Outdoor Unit Inverter PCB Circuit
2-way valve Temperature Thermistor
When 2-way valve 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.
02-20
Refer to error code table.
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
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
(PIPE)
THERMISTOR
(DISCHARGE PIPE)
THERMISTOR
(OUTDOOR TEMP.)
THERMISTOR
(HEATSINK)
2WV-A
3WV-A
2WV-B
3WV-B
THERMISTOR
(VALVE)
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