Troubleshooting 8 - Indoor Unit Error Method: Indoor Unit Fan Motor Abnormal - Fujitsu Airstage V series Service Manual

Trouble shooting 8
INDOOR UNIT Error Method:
Indoor Unit Fan Motor Abnormal
Detective Actuators:
Indoor Unit Controller PCB Circuit
Indoor Fan Motor
Forecast of Cause : 1. Fan rotation failure 2. Fan motor winding open 3. Motor protection by surrounding temp. increase
4. Capacitor failure 5. Control PCB failure
Check Point 1 : Check rotation of Fan
p Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
>>If Fan or Bearing is abnormal, replace it.
OK
Check Point 2 : Check Motor winding
p Check Indoor Fan motor (PARTS INFORMATION10, 11)
>>If Fan motor is abnormal, replace it.
OK
Check Point 3 : Check ambient temp. around motor
p Check excessively high temperature around the motor.
(If there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation..
OK
Check Point 4 : Check Motor Capacitor
p Check continuity of motor capacitor
>>If it is shorted, replace the capacitor.
OK
Check Point 5 :
Check Output Voltage (DC5.0V) of Control PCB
Check each indoor unit circuit diagram and the voltage (DC5.0V).
Measure at Control PCB side connector
(CN2)
If the voltage is not correct, replace Controller PCB.
Indicate or Display:
Indoor Unit : Operation LED 6 Times Blink, Timer LED Flash
Outdoor Unit : LED1 Flash, LED6
ERROR CODE : E : 13
Detective details:
When Indoor fan control is either phase control or DC control and rotation feed
back control is ON, the feed back rotation value becomes 0 and lasts for more
than 1 minute at motor operation condition. Or, the feed back rotation value
continues at 1/3 of target value for more than 1 minute.
DC
06-16
Swing LED OFF
1Time Blink
Attention!!
In case of Duct type, replace Controller PCB
and set up the original address, since it is a
tapping control.