Spi Feedback Error - Samsung AVXCSH023/032/040CE Service Manual

4-3-17 SPi Feedback Error

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