Samsung AC009BN1DCH, Service Manual, Page: 272 / 330

Troubleshooting
4-78 Samsung Electronics
4-4-18. DC LINK over-current / low-voltage error (Error Code : E466)
H/W DC_Link Over Voltage Error (Error Code : E483)
AC Input Voltage Sensor Error (Error Code : E488)
Display
Outdoor Unit display E466, E483, E488
Wired remote Control, Wind Free RAC E466, E483, E488
Duct, 1way Cassette
4way Cassette,
4way Cassette(600x600)
MAX4 Console 360 Cassette
or or
or
BLUE ◑
Duct
Blue Red
1way
Blue Yellow
X X
◑ ◑ ◑
X
◑ ◑ ◑
●
◑ ◑ ◑ ◑ ◑
X X
Judgment
method
Refer to checking method, as shown below.
Symtom
1. Test items
1) Check the power connection. / Check the restart after power reset.
→ Is there a fault in input power? (Single-phase : 220Vac, 3-phase : 380Vac)
→ Does error occur again at operation after power is reset?
2) Check the connection of the power, and check whether the jointed power connection exists.
→ After having installed several units, please check that communication wires are not interchanged with piping.
3) Check the reactor and its connecting wires.
4) Check the fuses of EMI PBA.
5) Check the Terminal Block and Power Terminal Box and the wire assembly.
2. Check procedure
Reconnect the power wire.
No
Is the power wire correctly connected?
1.Check the connecting wires. (between the reactor
wire and the Inverter PCB wire of the outdoor unit)
→ Check the normal operation. → End the service
2. Replace the reactor. → Check the normal
operation. → End the service.
No
Power OFF
Yes
Check the reactor and its connecting wires.
1. Is the wire between the reactor and the Inverter PCB of
the outdoor unit correctlyconnected?
2. Is there any fault such as scratch, pressing, broken
or loosened terminal?
Replace the fuse.
Yes
Is EMI PCB fuse defective?
Yes
Yes
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