Error Code MAIN-INV
Compressor control board communication failed
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: MAIN-INV LED blinks
What This Means
Communication cable disconnected; Inverter PCB failure; Corrupted signal
What actually causes this:
Inverter cable loose or inverter circuit board faulty
First Thing to Check
Check if compressor attempts to run
Parts Involved
How to Fix
- 1
Verify inverter cable connection
- 2
Check soldering on inverter PCB
- 3
Use oscilloscope to test signal
- 4
If cable OK, replace inverter PCB
This Error Applies To
Samsung RF28R7201 Series Refrigerators (2010) (2010–present)
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