Fujitsu Inverter Halcyon ASU12RMLQ, Service Instruction

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Trouble shooting 22
OUTDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
OK OK
OK OK
86°F
(30°C)
103 176 233 312 Resistance Value (k )
68°F
(20°C)
134
59°F
(15°C) 50°F
(10°C) 41°F
(5°C) 32°F
(0°C) 14°F
(-10°C) 23°F
(-5°C) Temperature
39.6
25.6 17.1 Resistance Value (k )
122°F
(50°C) 140°F
(60°C) 158°F
(70°C)
11.6
176°F
(80°C)
8.12
194°F
(90°C)
5.78
212°F
(100°C)
4.19 3.09
62.9 80.3
104°F
(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.
02-29
BLACK
RED
RED
RED
RED
RED
RED
RED
GRAY
BROWN
ORANGE
GREEN
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
2-WAY VALVE D
3-WAY VALVE D
VALVE THERMISTOR C, D
AOU36RML
BLACK
BLUE
YELLOW
RED
BLACK
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
1
2
3
4
5
6
7
8
1
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
CN39
2-WAY VALVE A
3-WAY VALVE A
2-WAY VALVE B
3-WAY VALVE B
AOU24RML