Error code reference

Samsung Refrigerator Error Code Uart ERROR COMMUNICATION

Communication error that is not applicable; if detected during diagnostic testing, ignore it.

Samsung codes Samsung refrigerator codes

Communication error that is not applicable; if detected during diagnostic testing, ignore it.

First step from the service manual

No repair necessary.

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

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Uart ERROR COMMUNICATION on my Samsung RF28R7351SG

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Communication error that is not applicable

From Service Manual 842906, p.38:

1.No repair necessary.

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

What Uart ERROR COMMUNICATION means on a Samsung refrigerator

The Uart ERROR COMMUNICATION code relates to UART (Universal Asynchronous Receiver-Transmitter) serial communication between control boards in the Samsung refrigerator. During normal operation or diagnostic testing, the main control board monitors communication signals between internal components. When this specific code appears, it flags a UART communication event that the system has logged or displayed. However, Samsung designates this code as not applicable to actual fault conditions - it carries no actionable diagnostic meaning and does not correspond to a real system failure.

For homeowners, this means the refrigerator is not actually broken. The code can surface during self-diagnostic routines or service mode testing, but it does not indicate a failed component, a wiring problem, or anything wrong with the refrigerator's operation. The refrigerator should continue cooling and running normally regardless of this code appearing in a diagnostic session.

No repair is needed when this code is detected. Technicians running diagnostic tests should log it and move on without taking corrective action. If the code appears during normal use outside of a diagnostic mode, verify the refrigerator is cooling correctly and check for any separate, co-occurring error codes that may require attention. This code alone requires no parts, no adjustments, and no service calls.

Source: manufacturer service documentation.

Common causes of Uart ERROR COMMUNICATION

01
Diagnostic test routine trigger
Wiring / connection
This code appears as a byproduct of running the refrigerator's built-in diagnostic or service mode, not because of any actual component failure. No fault exists and no action is required.
02
Incidental UART signal logging during power cycle
Wiring / connection
A power cycle or reset event can cause the control board to briefly log a UART communication status that surfaces as this code. The refrigerator resumes normal operation without any intervention.

See the test procedure for each cause

Frequently asked questions about Uart ERROR COMMUNICATION

What does Uart ERROR COMMUNICATION mean on a Samsung refrigerator?

This code indicates a UART serial communication event was detected and logged by the Samsung refrigerator's control board. Samsung classifies this code as not applicable to any real fault condition. It does not correspond to a failed part or a system problem, and no repair is needed.

How do I fix Uart ERROR COMMUNICATION on a Samsung refrigerator?

No fix is required for this code. Samsung's own service documentation states this error is not applicable, and if it appears during diagnostic testing, it should be ignored. Verify your refrigerator is cooling correctly and check for any other error codes that may be active alongside this one.

Can I still use my refrigerator with Uart ERROR COMMUNICATION active?

Yes, you can continue using the refrigerator normally. This code does not indicate a cooling failure, a safety hazard, or a damaged component. Monitor the refrigerator to confirm temperatures remain stable and watch for any additional error codes that carry actual fault conditions.

How much does it cost to fix Uart ERROR COMMUNICATION on a Samsung refrigerator?

The cost is zero. This code requires no repair, no replacement parts, and no service visit specifically for this code. If a technician visits and this is the only code present, no corrective work should be billed for it. If other error codes appear alongside it, those separate codes may carry their own repair costs.

Why does Uart ERROR COMMUNICATION keep showing up on my Samsung refrigerator's display?

This code most commonly surfaces during a diagnostic test cycle or after a power reset. Because Samsung designates it as a non-applicable code, repeated appearances do not signal a worsening problem. If the code is showing outside of diagnostic mode and you cannot clear it, check whether another error code is also active, as that secondary code may be the actual issue requiring attention.

View all 662 Samsung refrigerator codes

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