Error code reference

Samsung Refrigerator Error Code 27

P-M Communication error

Samsung codes Samsung refrigerator codes

P-M Communication error - communication between PANEL MICOM and MAIN MICOM not achieved due to interruption of more than 10 seconds. LCD panel repeats ON/OFF with buzzer alarm.

First step from the service manual

Check cable connections between panel PCB and main PCB, check upper hinge connector, check freezer door wiring.

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
Verified part numbers when replacement is required

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27 on my Samsung RF28R7351SG

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P-M Communication error - communication between

From Service Manual 620223, p.35:

1.Check cable connections between panel PCB and main PCB, check upper hinge connector, check freezer door wiring.

2.Measure door lock assembly resistance across the PTC terminals. Expected: ~200 ohms cold, rising sharply once energized.

3.Inspect strike and latch alignment. A warped door or misaligned strike prevents the switch stack from closing in the correct sequence.

Part DC34-00024B

Door lock assembly

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First step from the service manual

Get the full diagnostic procedure for 27.

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