Samsung AC052HBLDKH - Page 61

Samsung Electronics 4-27
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?
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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
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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?
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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?
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outdoor unit
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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?
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INVERTER PCB
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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?
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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
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INVERTER PCB
8 Check BLDC fan 1) See 12-2-3 The Outdoor unit Fan error(Fault Diagnosis)