GE stackable GTUP240EMWW throws "Overfill" error code, leaks when it agitates. Could these be related?

Brand: GE
Model Number: GTUP240EMWW
Main Symptom: Agitates once then stops, tub leaks
What happens & when: leaks when it agitates.

Error Code (if any): Overfill
Parts or tests already tried: Water valve & Agitator Diagnostic
Photos / video link:

Whenever i try load of any size or temp, it fills fine and stops when it should but it only agitates once then stops with the “on” and “wash” light blinking.

I ran a diagnostic on all the systems. They all seem to work fine. And i get the “Overfill” fault code, but the pressure hose seems fine no blockage, and when i disconnect power from the machine the water valve shuts off. Granted i only ran this latter test on cold water and only once.

I then noticed water leaking inside the machine, so i filled it with water. It didn’t leak much when static, but when i ran the diagnostic for agitation it leaked a lot more, therefore i will replace the agitator tub seal. Could these two issues be related? The overfill fault being caused by the leaking water? Or am i better off replacing the water valve and the seal? Thanks

Thanks for your post. Depending on how much water is leaking, it can cause the washer to think there is an overfill condition, which may trigger an overflow-related error.

When the washer reaches its normal full water level:

  • Does it continue trying to fill, or does it stop filling normally?

  • Also, how severe is the leak? Is it just a few drops, a small puddle, or a significant amount of water?

Those details can help narrow down whether the issue is related to a water level sensing problem, a valve issue, or simply the leak itself triggering the fault.

It stops filling normally, and it is about 4 or 5 drops every 10 seconds, resulting in a small puddle

With that being the case, this would be two separate failures. In the model number, is there a number in between the M and the WW? For the leak, does it seem like it is traveling through the transmission and coming out near the pulley, or does it seem to travel along the top of the transmission then off the side? If it is through the center, the transmission likely has a bad seal. If it is along the top and off the side, the tub seal is likely starting to fail. For the overflow issue, the pressure sensor can be tested from the main control to identify if there is an electronic issue. With the main control accessible by removing the slanted middle panel, the wires at connection J10 can be tested for voltage. When the washer is empty and the power is on, there should be a voltage reading of 1.2 Volts DC from the tan wire to the violet wire. Once the washer fills up with water and is at the proper fill level, the voltage should measure 3.6 Volts DC. The voltage readings will be reversed when testing from the violet wire to the black wire. If the voltages measure properly, the main control would be the likely issue. If the voltages do not measure with the expected DC voltage, the pressure sensor would be the likely cause of failure.

The following parts are for the model GTUP240EM1WW

Tub seal- WH08X24594 Laundry Center Tub Seal | Genuine Ge OEM In Stock

Transmission- WH16X10145 Washer Dryer Combo Support Assembly | Genuine Ge OEM In Stock

Pressure sensor- WH12X10511 Washer Dryer Combo Water Level Pressure Switch | Genuine Ge OEM In Stock

Main control- WH12X20274 Washer Dryer Combo Electronic Control Board | Genuine Ge OEM In Stock