Samsung SLIM DUCT Series, Service Manual

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Samsung Electronics 4-29
4-6-4 Outdoor Detailed Inspection Procedure
No Procedure Inspection Method Cause
1 Turn OFF the power
and check wire and
socket connection on
each part Wait until C702-C707 discharged
1) Is connection of housing to socket normal?
2) Is connection of each wire to terminal block normal?
3) Is the reactor wire connection normal?
4) Is there no miss-wiring of each cable?
tJOTUBMMBUJPONJTUBLF
tNJTTBTTFNCMJOH
2 FUSE check Is the fuses on each PCB normal?
3 fuese on EMI PCB
1 fuse on MAIN PCB
1 fuse on INVERTER PCB tXJSFTIPSU
tPWFSMPBE
t#-%$'"/TIPSUFSSPS
3 Turn on the power
and check voltage of
terminal block Is N-R,N-S,N-T around 230Vac?
Is R-S,S-T,T-R around 400Vac?
Is L-N(to indoor unit) around 230Vac?
Is F1-F2 within 5Vdc?
tNJTTXJSJOHPGQPXFSDBCMF
tXJSFEFUBDIJOH
4 Check LED display on
AIN PCB 1) Is RED LED ON?
2) Is GREEN LED Blinking once a second?
3) Is LEDs displaying error code pattern? t."*/1$#QPXFSUSPVCMF
tCBEDPNNVOJDBUJPOCFUXFFOJOEPPSBOE
outdoor unit
tFSSPSEFUFDUJPO
5 Check LED display on
INVERTER PCB 1) Is RED LED ON?
2) Is GREEN LED Blinking once a second?
3) Is LEDs displaying error code pattern?
t*/7&35&31$#QPXFSUSPVCMF
t/0DPNNVOJDBUJPOCFUXFFO."*/BOE
INVERTER PCB
tFSSPSEFUFDUJPO
6 Check DC voltage of
SMPS output MAIN PCB
1) Is voltage of CN51 pin#1-#2 12-14.5V?
2) Is voltage of C108 5V?
INVERTER PCB
3) Is voltage of CN51 pin#1-#2 5V?
4) Is voltage of C124 12V?
5) Is voltage of each ZD100,ZD101,ZD102,ZD103 17-18V?
t4.14DJSDVJUUSPVCMF
7 Check INVERTER PCB 1) Is resistance of R100 200ohm?
1) To check this, touch one probe to CN10 pin#1(N) and
the other to D101 upper side pin of '~' marking pins
2) Is DC Link voltage 450-510V?
1) Check IGBT module pins marking voltage near C701
t
resister
t wire connection between EMI PCB and
INVERTER PCB
8 Check BLDC fan 1) See 4--5-9 The Outdoor unit Fan error(Fault Diagnosis)