Samsung Washer Error Code C3

The C3 code on a Samsung washer signals a water supply problem. It can be caused by debris clogging the water supply valve's inlet screen, disconnected electrical terminals at the valve or PCB, incorrectly swapped hose connectors, or a missing connection along the wiring path between the drain hose area and the detergent drawer. The machine cannot proceed with a cycle until the fault is resolved.

You should not attempt to run a wash cycle while the C3 code is active. The machine is detecting a water supply fault, and continuing to operate it could result in incomplete cycles, improper rinsing of laundry, or potential strain on related components. Resolve the underlying cause before resuming normal use.

If the fix involves only cleaning the inlet screens or reseating a disconnected connector, the repair can be done at no parts cost. If the water supply valve has failed and needs replacement, parts typically range from $25 to $80 depending on the specific model, with professional labor adding $75 to $150 or more depending on your area. Diagnosing the exact cause first will help you determine whether this is a DIY fix or requires a technician.

Start by turning off the water supply and disconnecting the inlet hoses to inspect the valve's inlet screens for sediment or debris. Clean any clogged screens, then verify that the electrical connector at the water supply valve is fully seated. Check that the warm water and rinse hoses are connected to the correct ports, and trace the wiring harness between the drain hose area and the detergent drawer to confirm the PCB terminal is connected. If all connections and screens check out but the error persists, the water supply valve itself may need replacement.

A reset may temporarily clear the code from the display, but it will return as soon as the washer attempts to fill if the root cause has not been addressed. To permanently clear C3, the physical or wiring issue causing the fault must be corrected first. After making repairs, a reset or a fresh cycle start should confirm the code is gone.