Error code reference

Samsung Refrigerator Error Code PC Er

Communication error between Main MICOM and Panel MICOM

Samsung codes Samsung refrigerator codes

Communication error between Main MICOM and Panel MICOM — no response within 10 seconds after Main MICOM sends communication signal to Panel MICOM (displayed as 'PC E' on RSG5B* models).

First step from the service manual

Check connector between Main PBA and Panel PBA; replace Main or Panel PCB if needed (oscilloscope required for detailed error check).

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
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PC Er on my Samsung RF28R7351SG

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Communication error between Main MICOM and

From Service Manual 746336, p.28:

1.Check connector between Main PBA and Panel PBA; replace Main or Panel PCB if needed (oscilloscope required for detailed error check).

2.Inspect the communication harness between the main control and the UI board for bent pins or unseated connectors at each end.

3.Measure supply voltage to the UI board. Expected: 5 VDC at the interface connector; a low or missing rail points back to the main control supply.

Part DA41-00651R

Display board

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First step from the service manual

Get the full diagnostic procedure for PC Er.

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