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Error code reference

Samsung Dishwasher Error Code 3E

Circulation pump error (sub-codes 3E1 through 3E4)

Samsung codesSamsung dishwasher codes

Circulation pump error (sub-codes 3E1 through 3E4): circulation pump motor error received from inverter repeatedly, or pump speed below 2400rpm when target is 2600rpm or more for 3 seconds.

First step from the service manual

Check whether there is any foreign material in the Circulation Hose and Circulation Pump.

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

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What 3E means on a Samsung dishwasher

The Samsung dishwasher error code 3E indicates a circulation pump fault, with sub-codes 3E1 through 3E4 pointing to specific failure modes within the same system. The circulation pump is responsible for moving water through the spray arms during wash and rinse cycles. This error is triggered when the dishwasher's control board receives repeated motor error signals from the inverter drive circuit, or when the pump's rotational speed drops below 2,400 RPM while the target speed is 2,600 RPM or higher for a sustained period of three seconds. The inverter module controls pump motor speed electronically, so the fault detection is precise and tied directly to motor feedback signals.

The most frequent physical cause of this error is a foreign object lodged in the circulation hose or circulation pump impeller. Broken glass, food debris, bones, or small utensils can restrict impeller rotation and prevent the pump from reaching its target speed. Beyond physical blockages, the fault can also originate from electrical failures: a failing circulation pump motor with degraded windings, a defective inverter board that cannot properly drive the motor, or loose and corroded wiring connections between the inverter and pump. In some cases, a failing motor may draw excessive current or produce erratic feedback signals even without a visible obstruction, pointing to internal motor wear as the root cause.

Source: manufacturer service documentation.

Common causes of 3E

  1. 01

    Foreign material blocking the circulation pump or hose

    Wiring / connection

    Small objects such as broken glass, food particles, or utensil pieces can lodge in the circulation pump impeller or hose, preventing the pump from spinning at the required speed. Inspect the pump filter area and hose for any visible obstructions as the first diagnostic step.

  2. 02

    Worn or failed circulation pump motor

    Part replacement

    Internal motor wear can cause the pump to spin below the 2,400 RPM threshold even without a blockage, triggering the speed-based fault condition. A motor with degraded windings may also send erratic feedback signals to the inverter.

  3. 03

    Defective inverter board

    Part replacement

    The inverter module controls the circulation pump motor speed electronically. A faulty inverter can send incorrect drive signals or fail to respond to motor feedback, causing repeated motor error signals even if the pump itself is mechanically sound.

  4. 04

    Loose or corroded wiring connections

    Wiring / connection

    Poor electrical connections between the inverter board and the circulation pump motor can cause intermittent signal loss or increased resistance, resulting in motor errors being reported to the control board. Inspect connectors for corrosion, looseness, or burn marks.

  5. 05

    Clogged circulation hose

    Wiring / connection

    Grease buildup or debris accumulation inside the circulation hose can restrict water flow to the point where the pump is effectively starved, causing it to lose speed. Detaching and flushing the hose can confirm or rule out this cause.

See the test procedure for each cause

Frequently asked questions about 3E

What does 3E mean on a Samsung dishwasher?
The 3E code on a Samsung dishwasher indicates a circulation pump error. It is triggered when the pump motor speed falls below 2,400 RPM while the target is 2,600 RPM or more for three seconds, or when the inverter repeatedly reports motor errors. Sub-codes 3E1 through 3E4 identify more specific fault conditions within the circulation pump system. The most common cause is a physical blockage in the pump or circulation hose.
How do I fix a 3E error on my Samsung dishwasher?
Start by checking the circulation pump and hose for any foreign material such as broken glass, food debris, or small objects that may be blocking the impeller. Remove any obstruction found and run the dishwasher again to see if the error clears. If no blockage is present, the next steps involve inspecting the wiring connections to the pump motor and testing the pump motor and inverter board for electrical faults. Component replacement may be required if the motor or inverter has failed.
Will resetting my Samsung dishwasher clear the 3E error?
A reset may temporarily clear the 3E error code, but it will return if the underlying cause has not been resolved. To reset, you can power the dishwasher off at the circuit breaker for a few minutes and then restore power. If the pump is blocked or a component has failed, the fault will reappear as soon as the machine attempts to run a wash cycle.
Is it safe to use my dishwasher when the 3E error is showing?
It is not recommended to continue running the dishwasher while the 3E error is active. If the circulation pump is not operating correctly, water will not be distributed through the spray arms properly, meaning dishes will not be cleaned or sanitized. Continuing to run the appliance with a failing pump motor could also place additional stress on the inverter board and worsen the damage.
How much does it cost to repair a Samsung dishwasher 3E error?
Repair costs vary depending on the root cause. If the issue is a simple blockage, there may be no parts cost involved, though a service call fee typically ranges from around 75 to 150 dollars. Replacing a circulation pump motor generally costs between 150 and 350 dollars including parts and labor. An inverter board replacement can range from 200 to 400 dollars depending on parts availability and technician rates in your area.

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