Product specifications

4-27 Samsung Electronics
4-6-4 Outdoor Detailed Inspection Procedure
No Procedure Inspection Method Cause
1
Turn OFF the powerand
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?
•Installation mistake
•Miss assembling
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
•Wire short
•Overload
•BLDC FAN short error
3
Turn on the powerand
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?
•Miss wiring of power cable
•Wire detaching
4
Check LED display on
AIN P
1) Is RED LED ON?
2) Is GREEN LED Blinking once a second?
3) Is LEDs displaying error code pattern?
•MAIN PCB power trouble
•Bad communication between
indoor and outdoor unit
•Error detection
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?
•INVERTER PCB power trouble
•NO communication between
MAIN and INVERTER PCB
•Error detection
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?
•SMPS circuit trouble
7
Check INVERTER PCB 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
•Resister
•Wire connection between
EMI PCB and INVERTER PCB
8
Check BLDC fan 1) See 12-2-3 The Outdoor unit Fan error
(Fault Diagnosis)