Trouble shooting 24 E51. 2
INDOOR UNIT Error Method:
Indoor Unit Fan Motor 1 rotation
speed Error
Indicate or Display:
Indoor Unit : Operation LED 5 times Flash, Timer LED 1 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E.5 U.1
Error Code : 5 1
Detective Actuators:
Indoor Unit Controller PCB Circuit
Indoor Fan Motor
Detective details:
When the FAN motor feed back rotation value which is detecting on the
controller PCB becomes 0 and lasts for more than 1 minute at motor opera
tion condition.
Or, when the feed back rotation value contimues at 1/ 3 of target value for more
than 1 minute.
Check Point 2 : Check Motor winding / Internal PCB circuit
Check Indoor Fan motor ( Refer to the PARTS INFORMATION 20,21)
>>If Fan motor is abnormal, replace it.
Check Point 1 : Check rotation of Fan
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.
Check Point 3 : Check ambient temp. around motor
Check excessively high temperature around the motor.
(If there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation..
Check Point 4 : Check Motor Capacitor (*)
Check continuity of motor capacitor
>>If it is shorted, replace the capacitor.
Check Point 5 : Replace Controller PCB
OK
OK
OK
OK
Forecast of Cause : 1. Fan rotation failure 2. Fan motor winding open 3. Motor protection by ambient temp. increase
4. Capacitor failure 5. Controller PCB failure
Change Controller PCB and set up the original address.
* Applicable indoor unit:
- ARXA, ARCB, ARXC type
04-33
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