Spi Feedback Error - Samsung AM006JNFDCH/AA Service Manual

4-4-20 SPI Feedback Error

Outdoor unit display
Indoor unit display
Criteria
Cause of problem
1. How to check
indoor unit separated from PCB?
Can you measure 12V from
#1, #4 power with SPI connector
Samsung Electronics
◑(Operation) ◑(Timer)
• Check if the output of SPI Feedback is 12V
• SPI defect
Is the SPI connector of an
Yes
예
being connected?
Yes
Replace Main PCB
×(Fan) ◑(Filter) ×(Defrost)
No
#1 #4
No
Connect the connector to PCB
and reoperate
Replace SPI
Troubleshooting
4-55