Error code reference

Samsung Refrigerator Error Code Main-WiFi Communication Error

Serial communication error between Main PCB and WiFi module.

Serial communication error between Main PCB and WiFi module.

First step from the service manual

Confirm cable connection, then replace Main and WiFi PCB if problem persists.

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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