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) - Samsung AC026RN1DKG Service Manual

4-3-18 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)

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
Is the power wire correctly connected?
Check the reactor and
its connecting wires.
1. Is the wire between the reactor and
the Inverter PCB of the outdoor unit correctly
2. Is there any fault such as scratch,
pressing, broken or
loosened terminal?
Is EMI PCB fuse defective?
Check the Terminal Block
and Power Terminal Box.
1. Is the screw of the terminal block firmly Fastened?
2. Are the power wire of the Power Terminal Box and
terminal firmly assembled?
After replacing the Inverter PCB of the
outdoor unit, check for normal startup.
→ End the service.
Samsung Electronics
Power OFF
Yes
connected?
Yes
Yes
No
No
Reconnect the power wire.
1. Check the connecting wires. (between the
reactor wire and the Inverter PCB wire
No
of the outdoor unit) → Check the normal
operation. → End the service
2. Replace the reactor. → Check the normal
operation. → End the service.
Yes
1. Fasten the screws between Terminal
Block and power wire. → Check the normal
Yes operation. → End the service.
2. Connect the terminal of the Power
Terminal Box and the power wire. → Check
the normal operation. → End the service.
Troubleshooting
Replace the fuse.
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