Fujitsu AMUG36LMAS

Compressor temperature sensor error
AOU24RGLX
AOU30RGLX
DC
Compressor temperature thermistor short detected
Compressor thermistor open detected
1. Connector connection failure, open
2. Thermistor failure
3. Main PCB failure
OK
Check Point 1 : Check the connector connection and cable open
Connector connection state check
Cable open check
Check Point 2 : Check the thermistor
Thermistor characteristics check (Disconnect the thermistor from the PCB and check.)
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Main PCB (CN64:1-3) voltage value = 5V (AOU24/30RGLX)
Main PCB (CN63:3-4) voltage value = 5V (AOUG36/48LMAS1)
Disconnect thermistor from main PCB, and check voltage.
If the voltage does not appear, replace Main PCB, and execute
the check operation again.
03-26
Troubleshooting 19
Detective details:
Compressor temperature thermistor
Detective actuators:
Forecast of cause:
CN64
THERMISTOR (COMP SHELL1)
BROWN BROWN
2 31
2 31
AOUG36LMAS1
AOUG48LMAS1
CN63
THERMISTOR (COMP SHELL1) THERMISTOR (DIS.TEMP.1)
BLACK BLACK BLACK BLACK
1 2 3 4
1 2 3 4
Indicate or Display:
Indoor unit
Operation lamp: 7 times Flash,
Timer lamp : 2 times Flash
Wired remote control
Error code : [E : 72]
n
: n times blinking
: Light ON: Light OFF
Mode Error
2 7
2
Outdoor unit (AOUG36/48LMAS1)
(PARTS INFORMATION 7)
A B C D E F