Samsung dishwasher — Error Code WA
The WA error indicates an overfill condition detected by the water level sensor.
What it means
When your Samsung dishwasher displays an WA (sometimes appearing as 0C or WA), it signifies that the control board has identified an excessive water level within the wash tub. This alert is triggered by the water level sensor—commonly found within the case brake assembly or pressure switch—whenever the fluid volume exceeds safe operational limits. Upon detecting this, the unit will typically stop the current cycle and engage the drain pump to mitigate flood risks. This issue generally stems from one of three scenarios: water continuously flowing into the unit due to a mechanical failure, water failing to evacuate during the drain phase, or the control board receiving a false signal from a faulty sensor or damaged wiring.
Likely Causes
- 1 Failed Water Inlet ValveThe internal diaphragm of the water inlet valve can tear or become stuck open by hard water deposits, allowing water to seep into the tub even when the dishwasher is powered off.
- 2 Defective Water Level Sensor / Case BrakeThe case brake assembly contains a sensor that monitors water flow and level. If the sensor fails or the internal pathways clog, it sends a false overfill signal to the main control board.
- 3 Drain System BlockageA clogged filter assembly, blocked drain hose, or failing drain pump can leave residual water in the tub. When the next cycle starts, the new water combined with the old water triggers the overfill sensor.
- 4 Main Control Board FaultA stuck relay on the main control board can send continuous 120V power to the water inlet valve, causing the dishwasher to fill without stopping.
How to clear / reset
To attempt a reset, disconnect power to the dishwasher for 3 to 5 minutes by unplugging it or flipping the circuit breaker. If the tub contains standing water, however, the WA code will likely reappear immediately upon powering back up because the sensor still detects the overfill. You must clear the standing water manually or hold the Start/Reset button to force a drain cycle. Please note that these steps are temporary; the code will persist until the mechanical or electrical cause is addressed.
Common replacement parts
When to call a pro
If you have confirmed your drain lines are clear and the WA error remains, you are likely facing a failed water inlet valve, a faulty sensor, or a control board issue. These diagnostics require pulling the unit from under the counter and using a multimeter to check for voltage and continuity while live. A-Fix Service provides professional diagnostics for $90 (waived if you proceed with our repair) and includes a 1-year parts and labor warranty. We help homeowners across the PNW avoid potential kitchen flooding by safely managing these electrical and plumbing repairs.
FAQs
How much does it cost to fix a Samsung dishwasher WA error?
Expect repair costs between $150 and $300. The final price depends on whether the culprit is a simpler part like the water inlet valve or a more complex component such as the case brake assembly or main control board.
Can I fix the WA error code myself?
You can easily handle basic tasks like cleaning the filter or checking the drain hose for clogs. However, replacing the inlet valve or case brake requires uninstalling the appliance and working with electrical and plumbing connections, which is best handled by a licensed technician.
Will the WA error code clear itself?
No. Unless it was just a minor software hiccup, the error will stay or return on your next wash until the actual overfill cause or faulty sensor is repaired.
How long does it take to repair this issue?
An experienced technician can usually identify the specific failure and install a new inlet valve or water level sensor within 45 to 90 minutes.
Will it damage my dishwasher to keep running it with an WA code?
Yes. Continuing to operate the unit with an active overfill error is dangerous. It can lead to severe kitchen flooding, damage to your flooring or cabinetry, and potential electrical shorts within the dishwasher's base.
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