Fujitsu AS*G09KXCA Series Service Instruction page 49

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