Samsung AC009BNLDCH, Руководство по обслуживанию, Страница: 261 / 330

Troubleshooting
Samsung Electronics 4-67
4-4-10. Communication error between outdoor unit INV ↔ MAIN MICOM (1 min.)
(Error Code: E203)
Yes
End the service.
No
Does communication
error occurs?
Check the power connection and fuse.
1. Is there a problem in the power wire connection between Main ↔
EMI PCB of the outdoor unit?
2. Is there a problem in power wire connection between the Inverter ↔
EMI PCB of the outdoor unit?
3. Is the fuse (Fuse100) of outdoor unit Inverter PCB normal?
(Short-Normal, Open-Fault)
No
Yes
Power on 30 seconds after power off.
Replace the outdoor unit inverter or Main PCB.
1. If E203 Error to 7-segment of outdoor unit Main PCB is displayed, replace the Inverter PCB and then outdoor unit Main PCB is normal.
2. If Red - ON, Green - OFF, and Yellow - Blink are displayed in the LED display of outdoor unit Inverter, and there is no indication in
7-segment of outdoor unit Main PCB, replace the Main PCB → The outdoor unit Inverter PCB is normal.
Check the communication wire connections.
No
Yes
Is power supplied to
Inverter PCB?
Is there a problem
in the connections of communications between
the outdoor unit Inverter (CN31)
↔
Main
PCB (CN39)?
Display
Outdoor Unit display E203
Wired remote Control, Wind Free RAC E203
Duct, 1way Cassette
4way Cassette,
4way Cassette(600x600)
MAX4 Console 360 Cassette
or or
or
GRN ◑
Duct
Blue Red
1way
Blue Yellow
X X
◑ ◑
X X
◑ ◑
X X
◑ ◑
X
◑ ◑
X X
Judgment
method
Refer to checking method, as shown below
Symtom Communication error between the outdoor unit INV and Main Micom for one minutes