Fujitsu Inverter Halcyon AOU12RL, Service Instruction

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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 :
OK OK
OK OK
12.6 20.7 26.9 35.2 46.6 62.3 115 Resistance Value (k ) 16.1
Temperature
3.45 2.36 1.65 Resistance Value (k ) 5.18 7.97
Temperature
Outdoor Temperature Sensor Error
Outdoor Unit Main 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. 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.
06-10
Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF
Indoor Unit : Operation LED : 3 times, Timer LED : 4 times
ERROR CODE : [E : 0A]
THERMISTOR (PIPE) THERMISTOR (DISCHARGE) THERMISTOR (OUTDOOR)
BLACK
CN62 CN61
3 2 1 4 3 2 1
BROWN
BLACK
3 2 1 4 3 2 1
23 °F
(-5 °C)
14 °F
(-10 °C)
158 °F
(70 °C)
140 °F
(60 °C)
86 °F
( 30 °C)
68 °F
(20 °C)
59 °F
(15 °C)
50 °F
(10 °C)
41 °F
(5 °C)
32 °F
(0 °C)
122 °F
( 50 °C)
104 °F
( 40 °C)
-4 °F
(-20 °C)