Viking Dishwasher Error Code F15: Water in Base Tray... | appliancefaults.com

Technical Background:

The dishwasher's main control unit (MCU) monitors a float switch located in the base tray. When water accumulates in the tray, the float switch activates, sending a signal to the MCU. The MCU then triggers the F15 error code, indicating a potential leak. This is a safety mechanism to prevent water damage. The voltage path involves the float switch, wiring harness, and the MCU itself. A fault in any of these components can lead to a false F15 reading, but more often indicates a real leak.

Symptoms:

The homeowner reports the dishwasher is displaying an F15 error code. They may also notice water leaking from under the dishwasher or observe that the dishwasher is not completing its cycle.

Possible Causes:

Leaking water inlet valve.
Faulty drain pump seal.
Cracked or loose hose connections.
Overfilling of the dishwasher.
Defective float switch.

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Carefully remove the dishwasher from its system, inspecting for visible water damage to the floor.
3

Using a 1/4-inch nut driver, remove the lower access panel to expose the base tray.
4

Check for standing water in the base tray. If present, use a shop vacuum to remove it.
5

Inspect the water inlet valve, drain pump, and all hose connections for leaks. Tighten any loose connections with appropriate tools (e.g., pliers, screwdriver).
6

If a leak is identified, replace the faulty component. Replacement parts are available from Viking or authorized appliance parts suppliers.
7

Reassemble the dishwasher, reconnect the power, and run a test cycle to confirm the repair.

Safety Warning:

Always disconnect power to the dishwasher before performing any repairs. Use Lock-Out/Tag-Out (LOTO) procedures to ensure the circuit breaker remains off during the repair. The dishwasher contains 120V AC components. Contact with these components can cause serious injury or death.

Prevention:

Regularly inspect hoses and connections for wear and tear. Avoid overloading the dishwasher. Use the correct amount of detergent. Periodically clean the dishwasher's interior to prevent clogs that can lead to leaks.

Expert Tip:

Some Viking dishwashers have a service mode that allows you to manually activate components like the drain pump for testing. Refer to the technical service manual for the specific key sequence to enter service mode on your model. This can help isolate the source of the leak.

Frequently Asked Questions

•How do I test the float switch?

With the power disconnected, use a multimeter set to continuity. The switch should show continuity when the float is raised and no continuity when the float is lowered. If it doesn't, replace the float switch.

•How do I access the water inlet valve?

The water inlet valve is typically located behind the lower access panel, near where the water supply line connects to the dishwasher. You may need to remove additional panels or components to gain full access. Remember to disconnect power and water supply before working on the valve.

•What is the proper way to clean the dishwasher's interior?

Run an empty cycle with a dishwasher cleaner designed to remove grease and buildup. Alternatively, you can place a cup of white vinegar on the top rack and run a hot water cycle. Clean the filter regularly to prevent clogs.

Viking Dishwasher Error Code F15: Water in Base Tray Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the float switch?

•How do I access the water inlet valve?

•What is the proper way to clean the dishwasher's interior?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: