Samsung Refrigerator Error Code Sparkling Tank Overflow

This error indicates that the control board has detected an open circuit fault from the sparkling tank overflow sensor. The sensor monitors the carbonation tank to prevent water overflow, and the error is triggered when the sensor signal falls outside the expected voltage range. Causes include a separated sensor housing, a loose connector, a broken wire in the harness, or a short circuit. The sparkling water function will typically be disabled until the fault is resolved.

This error is not immediately dangerous to the overall refrigerator or your food storage. The control board triggers it as a protective measure to prevent the carbonation tank from overflowing. However, leaving the fault unresolved means the sparkling water feature will remain non-functional, and if the underlying cause involves moisture near the wiring, it is worth addressing promptly to prevent further electrical issues.

Repair costs vary depending on the root cause. If the fix is simply reseating a loose connector, there is no parts cost involved. Replacing the overflow sensor typically runs in the range of $20 to $80 for the part, depending on the specific model. If a wiring harness needs replacement or a technician is needed for diagnosis and repair, total costs including labor can range from $100 to $300 or more.

In many cases, yes. Start by checking that the connectors at CN30 and CN76 on the PCB assembly are fully seated and undamaged, as a loose connection is one of the most common causes. If you have a multimeter, you can verify supply voltage at CN30 Pins 1 and 2 and check the signal voltage between CN30 Pin 3 and CN76 Pin 1 to narrow down whether the fault is in the wiring, the sensor, or the board. Replacing the sensor or harness is within reach for a confident DIYer, though working near the carbonation system requires care.

A power reset may temporarily clear the error code, but if the underlying fault in the sensor circuit has not been corrected, the error will return. The control board re-checks the overflow sensor signal during normal operation, so any unresolved wiring issue, connector fault, or sensor failure will trigger the code again. A reset is useful for confirming whether the fault is intermittent, but it is not a substitute for diagnosing and repairing the actual cause.