Over/Low Voltage Error Of Dc-Link - Samsung AM040KXMDEH/EU Service Manual

Troubleshooting
4-3-20 Over/low voltage error of DC-Link (Error Code : E466)
1. Check items
1) Check the power and restarting after power reset
Is there any problem with input power?
(1 Phase: 220Vac, 3 Phase: 380Vac)
Does error occur again during operation after power reset?
2) Check the power cable connection, and joint cable connection
3) Check the reactor and reactor wire
4) Check the fuse on the EMI PBA
5) Check the Terminal block, power terminal cabinet and the power wire assembly
2. Check procedure
Turn off the power
Is the power cable connected properly?
Check the reactor and
reactor wire connection
1. Is wire connection between the reactor
outdoor unit inverter PBA normal?
2. Is there any problem on reactor coil?
(such as scratch/pressed/
broken terminal/
loose terminal)
Cont.
44
Yes
Yes
No
Re-connect the power cable
[Check list for model which uses 3 phase power.]
[Common: Power joint connection failure]
1. Correctly connect the wire between the reactor
outdoor unit inverter PBA
No
normal operation
2. Change the reactor
End service
[Check list for model which uses 3 phase power]
[Check list for model which uses 1 phase power]
Check for
End service
Check for normal operation
Samsung Electronics