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Error code reference

Midea Washer Error Code E33

Main PCB cannot get water level sensor (water switch) signal.

Midea codesMidea washer codes

Main PCB cannot get water level sensor (water switch) signal.

First step from the service manual

Check the water level sensor and the inner wire between PCB and the sensor.

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

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What E33 means on a Midea washer

The E33 error code on a Midea washer indicates that the main PCB (printed circuit board) is unable to receive a valid signal from the water level sensor, also called the water level switch or pressure switch. This sensor is responsible for monitoring the water level inside the drum and communicating that information to the control board so it can regulate fill cycles, wash cycles, and drainage. When the PCB loses communication with this sensor entirely, it cannot safely manage water intake, triggering the E33 fault to prevent overfilling or improper cycle operation.

The water level sensor typically operates via a pressure hose connected to the tub, which transmits air pressure changes to the sensor as water rises. The sensor converts this pressure into an electrical signal sent along a wire harness to the main PCB. A failure can occur at multiple points: the sensor itself may be defective, the pressure hose connecting the tub to the sensor may be kinked, cracked, or disconnected, or the wiring harness running between the sensor and the PCB may have a break, short, or loose connector.

Diagnosing E33 should begin with a physical inspection of the wire harness between the main PCB and the water level sensor. Check all connectors for corrosion, bent pins, or loose seating. Then inspect the sensor itself and its pressure hose for visible damage. If the wiring and hose appear intact, the sensor can be tested for proper resistance or continuity output. If the sensor passes testing and the wiring is sound, the main PCB may be at fault for failing to read the incoming signal correctly.

Source: manufacturer service documentation.

Common causes of E33

  1. 01

    Faulty or disconnected wiring harness

    Wiring / connection

    The wire harness connecting the water level sensor to the main PCB may have a broken wire, corroded connector, or loose plug. Inspect the full length of the harness and reseat all connectors firmly before proceeding to other diagnostics.

  2. 02

    Defective water level sensor

    Part replacement

    The water level sensor itself may have failed internally and is no longer producing a readable signal. If the wiring checks out, test the sensor for proper continuity or resistance output and replace it if it falls outside spec.

  3. 03

    Kinked or disconnected pressure hose

    Wiring / connection

    The small rubber hose that connects the wash tub to the water level sensor can become kinked, pinched, or detached over time, preventing the sensor from detecting water pressure accurately. Trace the hose from the tub fitting to the sensor and check for any blockage or disconnection.

  4. 04

    Corroded or damaged sensor connector

    Wiring / connection

    Moisture inside the cabinet can cause corrosion at the sensor connector pins, creating a high-resistance or open circuit condition. Clean the connector contacts with electrical contact cleaner and inspect for green or white oxidation buildup.

  5. 05

    Failed main PCB

    Part replacement

    If the sensor, pressure hose, and all wiring test as functional, the main control board may have failed and is unable to process the incoming sensor signal. This is the least common cause and should only be considered after all other components are ruled out.

See the test procedure for each cause

Frequently asked questions about E33

What does E33 mean on a Midea washer?
E33 means the main control board is not receiving any signal from the water level sensor, also called the water level switch or pressure switch. This sensor tells the washer how much water is in the drum during a cycle. Without that signal, the washer stops operation to prevent overfilling or running a cycle incorrectly. The fault is typically caused by a wiring issue, a failed sensor, or a disconnected pressure hose.
How do I fix the E33 error on my Midea washer?
Start by checking the wire harness that runs between the water level sensor and the main PCB, looking for loose connectors, broken wires, or corrosion. Next, inspect the pressure hose connecting the tub to the sensor for kinks or detachment. If those components look fine, test the water level sensor itself for continuity and replace it if it has failed. If all components test good, the main PCB may need to be replaced.
Is it safe to keep using my Midea washer with an E33 error?
No, it is not safe to continue running the washer while E33 is active. The control board relies on the water level sensor to regulate how much water enters the drum, and without that signal it cannot prevent the machine from overfilling. Continuing to run the washer in this state risks water damage to the appliance and your home. The fault should be diagnosed and resolved before resuming normal use.
Will resetting my Midea washer clear the E33 error?
A power reset, such as unplugging the washer for a few minutes and restarting it, may temporarily clear the E33 code if the fault was caused by a momentary signal interruption. However, if the underlying issue is a failed sensor, damaged wiring, or a disconnected pressure hose, the error will return as soon as the washer attempts to read the water level again. A reset is worth trying as a first step, but it does not fix the root cause.
How much does it cost to repair an E33 error on a Midea washer?
Repair costs vary depending on what component has failed. If the fix is simply reseating a loose connector or repositioning a kinked hose, there may be no parts cost at all, though a service call from a technician could run anywhere from $75 to $150. Replacing the water level sensor typically costs between $15 and $60 for the part, plus labor if a technician is doing the work. A main PCB replacement is the most expensive scenario and can range from $100 to $300 or more for the part alone.

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