Error Code ㊻
The main board's input/output controller isn't responding
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: LED blinks in self-diagnostic checklist position 33
What This Means
IO Expander chip defective; Main PBA soldering defect at IO Expander; Main PBA firmware corruption
What actually causes this:
An internal chip on the main circuit board has failed
First Thing to Check
Multiple functions on the display may be non-responsive if IO Expander fails
Parts Involved
How to Fix
- 1
1. Check for cold solder joints on IO Expander chip on Main PBA
- 2
2. If soldering appears normal, IO Expander chip is likely defective
- 3
3. Replace Main PBA
This Error Applies To
Samsung RF23R6 Series Refrigerators (2010) (2010–present)
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