Product specifications

4-11 Samsung Electronics
4-5-2 The Outdoor unit Power Supply error
1. Checklist :
1) Are the input power voltage and power connection correct?
2) Is there any Fuse Short of the indoor or outdoor unit?
3) Is any LED lit on both MAIN PCB and INVERTER PCB?
4) Are Reactor wires of the outdoor unit connected correctly?
2. Troubleshooting procedure
Yes
Yes
No
No
No
Yes
Yes
No
Yes
Yes
No
Yes
Check LEDs on both MAIN PCB and
INVERTER PCB after1 minutesfrom
power on
Is voltage on N-T of terminal
block over 300V?
Are wire and socket connected
correctly? Power line N and
T wire(Terminal block -
reactor - EMI PCB), CN9(EMI PCB),
CN80(MAIN PCB)
Is there miss connection of
power andcommunication wire
betweenindoor and outdoor?
Is there any power wire
detachingespecially
phase R and S?
Are wire and socket connected
correctly? CN31(MAIN PCB),
CN10(INVERTER PCB)
Is the FUSE on INVERTER PCB
blown?
Is R100 on INVERTER PCB
open?(200ohm moninal)
Check INVERTER PCB
Are wire and socket connected
correctly? CN05,06,07 TAB
terminal(EMI PCB),
CN20(INVERTER PCB)
Check and correct the power cable wiring
Check and correct the wire or socket
connection
Check Fuses listed blow FUSE3(EMI PCB),
FUSE(MAIN PCB)
Correct the cable wiringbetween indoor and
outdoor
Check F1,F2 communication line wiring.
CN50(MAIN PCB)
Check and correct the power cable wiring
Check Fuses listed blow FUSE1(EMI PCB),
FUSE2(EMI PCB)
Check and correct the wiring
Replace the FUSE
Replace INVERTER PCB
Also check each BLDC FAN motoshort or not,
by resistance betweenpin #1 and #3
Check and correct the wiring
Check the M/C
No
Yes
No
No
MAIN PCB INVERTER PCB
ALL OFF ALL OFF
Error 202 display
(Table No. 14)
Normal
Error 425 display
(Table No. 22)
ALL OFF
Error 203 display
(Table No. 3)
ALL OFF
Error 466 display
(Table No. 7)
Error 466 display
(Table No. 7)
Error 469 display
(Table No. 19)
Error 469 display
(Table No. 19)