Trouble shooting 22
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°C
Temperature
39.6
25.6 17.1Resistance Value (k )
50°C
60°C 70°C
11.6
80°C
8.12
90°C
5.78
100°C
4.19 3.09
62.980.3
40°C
Temperature
3-way valve Temperature
Thermistor Error
Outdoor Unit Main PCB Circuit
3-way valve Temperature Thermistor
When 3-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. Main 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 Main 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 Main PCB.
02-32
BLACK
RED
RED
RED
RED
RED
RED
RED
GRAY
BROWN
BLACK
BLUE
YELLOW
RED
BLACK
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
RED
WHITE
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
4
5
6
7
8
9
CN40
CN39
VALVE THERMISTOR A, B
2-WAY VALVE A
3-WAY VALVE A
2-WAY VALVE B
3-WAY VALVE B
2-WAY VALVE C
3-WAY VALVE C
ORANGE
GREEN
2-WAY VALVE C
3-WAY VALVE C
Refer to error code table.
VALVE THERMISTOR C, D (For AO*30LMAW4)
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