Samsung AM080KXMDFH/TC - Page 77

Troubleshooting
Samsung Electronics 4-35
■ Error due to overcurrent of Fan2. (E-378) /
V-limit error on Fan2 of compressor. (E-389) /
Error due to overcurrent of Fan1. (E-478) /
V-limit error on Fan1 of compressor. (E-489)
Outdoor unit Display E-378 / E-389 / E-478 / E-489
Judgement Method
•OccurswhenovercurrentflowsintheIPM.
•DetectedbyH/WorS/W
Cause of problem
•Installationdefective
•Connectionwireerror
•Comp.defective
•Motordefective
•PCBdefective
Power Off
Is the outdoor unit
installed properly?
Yes
No
Is the resistance
value between different
phases of compressor
(U ↔ V, V ↔ W,W ↔ U)
less than 10Ω?
Is the resistance
between the body of
Fan Motor and chassis
MΩ?
Yes
Outdoor Fan Motor.
No
Reinstall after removing obstacle.
Outdoor Fan Motor.
No
Does the Fan Motor
connection wire
properly connect to the
compressor?
Check the connection wire
(Check the status of the connection U V W )
Yes
FAN Replace PCB .
Yes