Test 1 : Check rotation of Fan
Test 2 : Check ambient temp. around motor
OK
OK
OK
1. Fan rotation failure 2. Fan motor winding open 3. Motor protection by surrounding temperature rise
4. Control PCB failure 5. Indoor unit fan motor failure 6. Power supply PCB
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 excessively high temperature around the motor.
(If there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation.
Test 4 : Replace Controller PCB
If Test 1- 3 do not improve the symptom, replace Controller PCB.
Test 3 : Check Indoor unit fan motor
Check Indoor unit fan motor.
>>If Indoor unit fan motor is abnormal, replace Indoor unit fan motor.
OK
Test 5 : Replace Controller PCB
If Check Point 4 do not improve the symptom,replace Controller PCB.
Trouble shooting 14
INDOOR UNIT Error Method:
Indoor Unit Fan Motor Error
Indoor unit controller PCB
Indoor unit fan motor
When the condition that actual frequency of indoor fan is below 1/3 of target
frequency is continued more than 56 seconds.
Detective Actuators:
Detective details:
Indicate of Display:
Forecast of Cause:
02-29
(SERVICE PARTS INFORMATION 5)
Indoor Unit
Outdoor Unit
Operation lamp : 5 time Flash
ERROR CODE : [E : 51]
Timer lamp: 1 time Flash
: Light ON : Light OFF n : n time blinking
Monitor
A B C D E F
5 15
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