Outdoor Detailed Inspection Procedure - Samsung NS100SSXEA Service Manual

Troubleshooting

4-6-4 Outdoor Detailed Inspection Procedure

No Procedure
Turn OFF the powerand
check wire and socket
connection on each part
1
FUSE check
2
Turn on the powerand
check voltage of
3
terminal block
Check LED display on
AIN P
4
Check LED display on
INVERTER PCB
5
Check DC voltage of
SMPS output
6
Check INVERTER PCB
7
Check BLDC fan
8
4-35
NS090SDXEA_E_SM_33623A(1)_1.indd 35
Inspection Method
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?
Is the fuses on each PCB normal?
3 fuese on EMI PCB
1 fuse on MAIN PCB
1 fuse on INVERTER PCB
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?
1) Is RED LED ON?
2) Is GREEN LED Blinking once a second?
3) Is LEDs displaying error code pattern?
1) Is RED LED ON?
2) Is GREEN LED Blinking once a second?
3) Is LEDs displaying error code pattern?
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?
1) Is resistance of R100 200ohm?
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?
Check IGBT module pins marking voltage
near C70
1) See 12-2-3 The Outdoor unit Fan error
(Fault Diagnosis)
Cause
•Installation mistake
•Miss assembling
•Wire short
•Overload
•BLDC FAN short error
•Miss wiring of power cable
•Wire detaching
•MAIN PCB power trouble
•Bad communication between
indoor and outdoor unit
•Error detection
•INVERTER PCB power trouble
•NO communication between
MAIN and INVERTER PCB
•Error detection
•SMPS circuit trouble
•Resister
•Wire connection between
EMI PCB and INVERTER PCB
Samsung Electronics
2011-04-08 10:55:31