GE Dishwasher Leak Protect Sensor: Beeping Stops When... | appliancefaults.com

Technical Background:

The Leak Protect sensor is a normally open float switch at the base of the dishwasher. When water accumulates, the float rises, closing the switch and signaling the MCU. The MCU then activates the drain pump and sounds an alarm. Tilting the unit temporarily moves the water away from the sensor, stopping the alarm.

Symptoms:

US homeowner reports a GE dishwasher beeping due to the Leak Protect sensor being triggered. The beeping stops temporarily when the unit is tilted.

Possible Causes:

Internal leak triggering the Leak Protect sensor.
Faulty Leak Protect sensor.
Wiring issue between the sensor and the main control board (MCU).
Clogged drain causing water backup.
Defective circulation pump seal leaking intermittently.
Cracked or loose hose connection inside the dishwasher.

Solution:

1

Turn off the dishwasher and disconnect power at the breaker panel.
2

Remove the lower access panel using a 1/4-inch nut driver to access the Leak Protect sensor (usually located in the base).
3

Inspect the sensor area for standing water or signs of past leaks. Use a shop towel to dry the area.
4

Check the sensor wiring and connector for corrosion or damage. Use a multimeter to test continuity of the wiring harness.
5

If no leaks are apparent, test the Leak Protect sensor itself. Refer to the tech sheet for the sensor's resistance range; typically it will read open circuit when dry and near zero ohms when wet.
6

If the sensor is faulty, replace it with a new one. GE part number will be on the old sensor.
7

After replacing the sensor, reconnect power and run a short test cycle to verify the repair.

Safety Warning:

Disconnect power at the breaker panel before working on the dishwasher. Lock Out/Tag Out (LOTO) procedures must be followed. Some components may retain a high voltage charge even after disconnection.

Prevention:

Regularly inspect hoses and connections for leaks. Clean the drain filter to prevent clogs. Consider using a dishwasher cleaner monthly to prevent buildup.

Expert Tip:

Some GE dishwashers have a service mode that can be accessed by pressing specific button combinations. Consult the service manual for your model to access diagnostic codes and tests.

Frequently Asked Questions

•How do I locate the tech sheet for my specific GE dishwasher model?

The tech sheet is usually located behind the kickplate or taped to the inside of the control panel. You can also find it online by searching for your model number followed by "tech sheet".

•What resistance value should I expect from a functioning Leak Protect sensor when dry?

A functioning Leak Protect sensor should have infinite resistance or an open circuit when dry. When wet, the resistance should drop to near zero ohms.

•If I replace the Leak Protect sensor and the problem persists, what else could be causing the issue?

If the problem persists after replacing the sensor, the main control board (MCU) could be faulty or there could be a wiring issue between the sensor and the MCU. Double-check the wiring harness for any shorts or breaks.

GE Dishwasher Leak Protect Sensor: Beeping Stops When Tilting - Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I locate the tech sheet for my specific GE dishwasher model?

•What resistance value should I expect from a functioning Leak Protect sensor when dry?

•If I replace the Leak Protect sensor and the problem persists, what else could be causing the issue?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: