Samsung Electronics
4-37
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?
• 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 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?
• miss wiring of power cable
• wire detaching
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?
• 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?
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
• 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)
Summary of Contents for CH070EAV1
Page 40: ...3 22 Samsung Electronics MEMO...
Page 88: ...Product Specifications 5 10 Samsung Electronics 5 4 Assy control out UH090 105 140EAV...
Page 90: ...Product Specifications 5 12 Samsung Electronics UH070EAV1...
Page 92: ...5 14 Samsung Electronics MEMO...
Page 99: ...Samsung Electronics 6 7 6 1 5 OUTDOOR DISPLAY PCB...
Page 100: ...6 8 Samsung Electronics MEMO...
