Spi Feedback Error - Samsung AM056FN2DEH Series Service Manual

Troubleshooting

4-4-22 SPI Feedback Error

Outdoor unit display
Indoor unit display
◑(Operation)
Criteria • Check if the output of SPI Feedback is 12V
Cause of problem
• SPI defect
1. How to check
indoor unit separated from PCB?
Can you measure 12V from
#1, #4 power with SPI connector
442
◑(Timer)
Is the SPI connector of an
Yes
예
being connected?
Yes
Replace Main PCB
×(Fan) ×(Defrost)
◑(Filter)
No
#1 #4
No
Connect the connector to PCB
and reoperate
Replace SPI
Samsung Electronics