Troubleshooting
Samsung Electronics
4-17
4-3-2 Main PCB has no power phenomenon
Outdoor unit display
Main PCB has no power phenomenon (7-seg does not blink)
Judgment Method
Hub PCB power and connection wire to detect.
Connector check
Method
CN96 on HUB PCB
- 1pin to 4pin : DC 12V
- 9pin to 4pin : DC 5V
Cause of problem
∙ HUB PCB connector wire defects and the connection is not.
∙ Main PCB defective.
∙ Hub PCB defective.
∙ High pressure switch operation
∙ Water hub PCB defective. CN96 on HUB PCB
1. Cause of problem
Replace the MAIN PCB.
Check the refrigerant overcharge.
Replace if there is no abnormality.
Replace the EMI PCB.
No
No
Yes
Yes
Yes
Did the high pressure
switch become short-circuit?
Did the first EMI PCB Fuse
become short-circuit?
Check the rated input voltage range
on main terminal block. (R/S/T/N).
No
Yes
Is the rated
voltage of CN70(1pin to 3pin)
connector of the HUB PCB is supplied to
within ± 10%?
Check the short-circuit of HUB PCB.
Replace HUB PCB if there is abnormality.
Connect the communication wire to the CN96
connector on the HUB PCB.
No
No
Yes
Yes
Is the HUB PCB LED lighted up?
Is the communication wire of
MAIN/HUB connected?
Power On
Содержание AM080*XV Series
Страница 205: ...Samsung Electronics 5 1 5 PCB Diagram and Parts List 5 1 ASS Y PCB MAIN...
Страница 208: ...PCB Diagram and Parts List 5 4 Samsung Electronics 5 2 ASS YPCBMAIN HUB AC...
Страница 210: ...PCB Diagram and Parts List 5 6 Samsung Electronics ASS YPCBMAIN HUB cont DC...
Страница 216: ...PCB Diagram and Parts List 5 12 Samsung Electronics 5 4 ASS YPCBFAN Model 1 FANchassis...
Страница 218: ...PCB Diagram and Parts List 5 14 Samsung Electronics ASS YPCBFAN cont Model 2 FAN chassis...
Страница 241: ...Cycle Diagram 7 10 Samsung Electronics 7 16 AM240 260 280 300MXVAGC...
Страница 257: ...Key Options 8 8 Samsung Electronics 8 3 How to check the view mode using a tact switch AM080 2606XV666 rX rY rZ r...