Speed Queen Washer Overflowing: Troubleshooting Guide -... | appliancefaults.com

Technical Background:

The MCU (Main Control Unit) controls the water inlet valve based on signals received from the pressure switch or water level sensor. When the MCU detects that the proper water level has been reached, it de-energizes the water inlet valve, stopping the flow of water. Voltage paths need to be verified to ensure correct signals are being received and sent.

Symptoms:

The Speed Queen washer fills with water beyond the normal level and overflows during the fill cycle or even when the machine is off.

Possible Causes:

Faulty water inlet valve
Defective pressure switch
Blocked drain line
Malfunctioning water level sensor
MCU failure related to water level control

Solution:

1

Disconnect power to the washer at the breaker panel (LOTO).
2

Inspect the water inlet valve for proper closing; replace if leaking when de-energized. Check for 120V AC at the valve during fill cycles using a multimeter.
3

Test the pressure switch for continuity; replace if it shows open or closed when it shouldn't.
4

Check the drain line for any kinks or obstructions that may be preventing proper drainage.
5

Verify water level sensor readings using a multimeter; refer to the service manual for correct values.
6

Examine the MCU for any visible damage; replace if necessary.
7

Ensure the drain hose is properly inserted into the standpipe with sufficient air gap.

Safety Warning:

Always disconnect power to the washer before performing any repairs. High voltage is present in the control panel and at the water inlet valve. Use proper Lock Out Tag Out (LOTO) procedures before beginning work.

Prevention:

Regularly inspect the water inlet valve for any signs of wear or leakage. Check the drain line for any obstructions. Periodically clean the pressure switch hose to prevent debris buildup.

Expert Tip:

Speed Queen washers often have a diagnostic mode. Consult the service manual for your specific model to access this mode. This will allow you to test individual components and identify error codes.

Frequently Asked Questions

•What are the correct resistance values for the water level sensor?

The resistance values for the water level sensor vary depending on the water level. Refer to the service manual for your specific model for the correct values at different water levels.

•How do I access the diagnostic mode on my Speed Queen washer?

The procedure for accessing diagnostic mode varies depending on the model. Typically, it involves pressing a specific sequence of buttons on the control panel. Consult your service manual.

•Where is the pressure switch located on my Speed Queen washer?

The pressure switch is typically located near the bottom of the washer cabinet, often attached to the frame with a hose connected to the tub.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What are the correct resistance values for the water level sensor?

•How do I access the diagnostic mode on my Speed Queen washer?

•Where is the pressure switch located on my Speed Queen washer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: