How do I fix error code AUTOFILL-OVERFLOW on a Samsung refrigerators?

1. undefined: Check voltage of MAIN PCB CN90-'11' '13' 2. undefined: 0V to 4.5V = water overflow condition 3. undefined: 4.5V to 5V = no overflow problem 4. undefined: Check autofill tank sensor and fill valve if voltage indicates overflow

Samsung Refrigerators2022–present

Error Code AUTOFILL-OVERFLOW

Q: What does error code AUTOFILL-OVERFLOW mean on a Samsung refrigerators?

AutoFill pitcher has detected a water overflow condition Water fill valve stuck open; Overflow sensor malfunction; Blocked pitcher sensor; Autofill system overfilling

AutoFill pitcher has detected a water overflow condition

Moderate

Address soon - your appliance may not work properly

Also displayed as: Indicated via self-diagnosis

What This Means

Water fill valve stuck open; Overflow sensor malfunction; Blocked pitcher sensor; Autofill system overfilling

What actually causes this:

The self-filling water pitcher inside the Beverage Center overflowed, triggering the overflow sensor.

First Thing to Check

Check if the AutoFill Pitcher is physically overflowing and empty it if so.

Parts Involved

AutoFill overflow sensorWater fill valveMAIN PCB connector CN90

How to Fix

1
Check voltage of MAIN PCB CN90-'11' <-> '13'
2
0V to 4.5V = water overflow condition
3
4.5V to 5V = no overflow problem
4
Check autofill tank sensor and fill valve if voltage indicates overflow

This Error Applies To

Samsung RF25C5 Series Refrigerators (2022) (2022–present)

Service manual exact match: RF25C5151SR/AAService manual exact match: RF25C5151**Service manual exact match: RF25C5551**Service manual exact match: RF25C5551SR/AA