Fujitsu AO*G09KXCA Series, Service Instruction

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Trouble shooting 12
Side Fan Motor ( Left ) Lock Error
Side Fan Motor ( Left ) Rev. Error
INDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators: Detective details:
02-16
Indoor unit Controller PCB
Indoor Side Fan motor ( Left )
・
When the condition that actual rev. of Indoor Fan is 1/3 or less.
・
When it detecteds 10 seconds continuously at the target rotation
(200rpm) or more.
Or the condition of fan speed is 0rpm is continued more than 56 seconds.
Forecast of Cause:
1. Fan motor failure 2. Motor protection by surrounding temperature rise
3. Controller PCB failure
Test 1 : Check connection of connector
Check if connector is removed.
Check if connector is erroneous connection.
Check if thermistor cable is open.
>> Upon correcting the removed connector or miss-wiring, reset the power.
Test 2 : Remove connector and Check Controller PCB side connector voltage value
OK
Make sure circuit diagramof indoor unit and check connector voltage at Controller PCB.
If the mesurement value does not match the above table , replace the Controller PCB.
Remove the CN28 of Controller PCB.
CN 3
1
WHITE
SIDE FAN MOTOR ( LEFT )
SFM
WHITE
2
3
4
5
1
2
3
4
5
WHITE
WHITE
WHITE
Test 3 : Replace Side Fan
OK
If Test 1, 2 do not improve the symptom , replace Side Fan.
Tester (+) Tester (-)
1 pin
Voltage Value
4 pin
0V
5 pin 4 pin 20V
( Please before the remove the connector, power supply switch OFF . Then turn ON.)
Indoor Unit :
Operation indicator: 5 time Flash
Timer indicator : 9 time Flash
Error code: [ E : 59 ]
Economy indicator: Continuous Flash