GE Dishwasher Leak Protect: Understanding the Leak... | appliancefaults.com

Technical Background:

The 'Leak Protect' error indicates that the dishwasher's control board (MCU) has detected a potential water leak. This is typically signaled by a float switch rising due to accumulated water. The MCU monitors the voltage signal from the float switch circuit. When the switch activates, it changes the voltage signal, triggering the 'Leak Protect' mode, which often shuts down the dishwasher and activates the drain pump.

Symptoms:

The dishwasher displays 'Leak Protect' on the control panel and may stop mid-cycle. Water may be detected in the bottom of the dishwasher.

Possible Causes:

Float switch malfunction
Leak in the water inlet valve
Drain pump issue
Overfilling problem
Cracked tub or seals

Solution:

1

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

Inspect the float switch located at the bottom of the dishwasher. Ensure it moves freely and isn't stuck in the 'up' position.
3

Check the water inlet valve for leaks. Tighten connections if necessary; replace the valve if damaged.
4

Inspect the drain pump for clogs or damage. Remove any debris and test the pump's operation; replace if faulty.
5

Examine the dishwasher tub and door seals for cracks or damage. Replace any damaged components.
6

Use a multimeter to test the continuity of the float switch when in the up and down positions. Verify that the control board is receiving the correct signals. Look for 120V AC at the inlet valve when filling.
7

Check the drain hose and connections for leaks or blockages.

Safety Warning:

Disconnect power to the dishwasher at the breaker panel before performing any troubleshooting or repairs. Lock Out/Tag Out (LOTO) procedures should always be followed to prevent accidental energizing of the circuit. Dishwashers operate with 120V AC; improper handling can result in electric shock.

Prevention:

Regularly inspect the dishwasher for leaks and address them promptly. Clean the float switch area to prevent debris buildup. Use proper detergent amounts to avoid over-sudsing.

Expert Tip:

Some GE dishwashers have a service mode that allows you to manually activate components for testing. Consult the technical service manual for your specific model to access this mode and run diagnostic tests. Typically, press and hold the Start button for 5 seconds to enter service mode.

Frequently Asked Questions

•How do I access the float switch on my GE dishwasher?

The float switch is usually located at the bottom of the dishwasher tub, often under a removable shield or cover. You may need to remove the lower spray arm and filter to access it.

•What readings should I expect when testing the float switch with a multimeter?

When the float is in the down position (no water), the multimeter should show continuity (closed circuit). When the float is raised (simulating a leak), the circuit should be open (no continuity).

•Where can I find the technical service manual for my specific GE dishwasher model?

You can often find the technical service manual on the GE Appliances website by searching for your dishwasher's model number. Alternatively, you can purchase a copy from appliance parts retailers.

GE Dishwasher Leak Protect: Understanding the Leak Sensor

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the float switch on my GE dishwasher?

•What readings should I expect when testing the float switch with a multimeter?

•Where can I find the technical service manual for my specific GE dishwasher model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: