Commercial Washer of Speed Queen Continuous Draining- Repair Guide

A Speed Queen Commercial Washer is built for durability, but issues like continuous draining can disrupt operations. This problem often stems from faulty drain systems, control board errors, or blockages. Ignoring it can lead to water wastage, incomplete cycles, or machine damage. Whether you’re a technician or facility manager, this guide ensures quick, effective fixes to keep your laundry operations running smoothly.

By the end, you’ll know how to inspect drain hoses, test solenoids, reset control boards, and more. Let’s dive into the solutions!

Check the Drain Hose for Blockages in Commercial Washer

A clogged drain hose is a common culprit behind continuous draining. Lint, coins, or debris can obstruct water flow, forcing the washer to drain improperly.

Steps to Fix:

• Unplug the washer for safety.
• Locate the drain hose (usually at the back).
• Detach the hose and inspect for blockages.
• Flush it with water or use a plumber’s snake to clear debris.
• Reattach securely and test the washer.

Prevention Tip: Install a lint filter to catch debris before it enters the drain system.

Also read: Samsung-wa50r5400aw repair guide

Inspect the Drain Pump of Commercial Washer

A malfunctioning drain pump can cause continuous draining. If the pump’s impeller is stuck or the motor is faulty, it may run non-stop.

Steps to Fix in Commercial Washer:

• Access the drain pump (refer to the manual).
• Check for obstructions (coins, buttons, etc.).
• Spin the impeller manually—if it doesn’t move freely, replace the pump.
• Test the pump’s continuity with a multimeter (no continuity = faulty pump).

Pro Tip: Listen for unusual noises—grinding or humming indicates pump failure.

Test the Water Level Switch of Commercial Washer

The water level switch (pressure switch) is a critical component that tells your Speed Queen washer when to stop filling and start draining. If this switch is faulty or misaligned, it may incorrectly signal the machine to drain continuously, even when the tub isn’t full.

Steps to Diagnose & Fix:

1. Unplug the Washer – Always disconnect power before inspecting electrical components.
2. Locate the Pressure Switch – Typically found near the top of the washer, connected to a small hose leading to the tub.
3. Inspect the Hose – Ensure it’s not kinked, cracked, or clogged, as this can cause false readings.
4. Test the Switch – Use a multimeter to check for continuity. If the switch doesn’t respond when blown into (simulating water pressure), it’s likely defective.
5. Replace if Necessary – If faulty, install a genuine Speed Queen replacement switch for optimal performance.

🔍 Pro Tip: A stuck or malfunctioning pressure switch can also cause overfilling or underfilling issues—always test it if drainage problems persist.

Examine the Drain Solenoid Valve of Commercial Washer

The drain solenoid valve controls water release during cycles. If it’s stuck open or shorted, the washer will drain continuously, even mid-cycle.

Steps to Fix:

1. Power Off the Washer – Safety first!
2. Locate the Solenoid – Usually near the drain pump or control panel.
3. Check for Power – Use a multimeter to verify if the solenoid receives proper voltage (typically 120V AC).
4. Test for Continuity – If the solenoid coil has no continuity, it needs replacement.
5. Inspect for Debris – Sometimes, small objects prevent the valve from closing fully—clean if necessary.

⚠️ Warning: A burning smell near the solenoid indicates an electrical fault—replace immediately to avoid further damage.

Inspect the Control Board for Errors

The main control board manages all washer functions, including draining. A glitch, short circuit, or failed relay can cause continuous draining.

Troubleshooting Steps:

1. Perform a Hard Reset – Unplug the washer for 5 minutes, then restart.
2. Check for Error Codes – Some Speed Queen models display codes (e.g., “E3” for drain issues).
3. Inspect for Burnt Components – Look for charred resistors or capacitors on the board.
4. Test Relay Functionality – A stuck relay can keep the drain system engaged.
5. Replace if Needed – If the board is faulty, use an OEM replacement—aftermarket boards may cause compatibility issues.

💡 Did You Know? Power surges are a common cause of control board failures—consider a surge protector for your washer.

Verify the Lid Switch Functionality

A faulty lid switch can trick your Speed Queen washer into thinking the lid is open, causing it to drain continuously as a safety precaution. This component is designed to pause the cycle when the lid is lifted, but if it malfunctions, it may incorrectly signal the machine to drain.

Start by testing the switch. With the washer unplugged, locate the switch near the door hinge. Use a multimeter to check for continuity—press the switch mechanism (or close the lid) and see if the circuit completes. If there’s no continuity, the switch is defective and needs replacement.

Another sign of a bad lid switch is if the washer refuses to spin but still drains. If you’ve ruled out other issues, this switch could be the culprit. Replacing it is usually straightforward—just ensure you get the correct OEM part for your model.

Check the Drain Timer Settings

Older Speed Queen commercial washers use a mechanical timer to control the drain cycle. If this timer gets stuck or wears out, it may keep the drain function engaged indefinitely.

To diagnose, manually advance the timer knob while the washer is running. If the draining stops when you move it past the drain phase, the timer is likely faulty. Some digital models have an electronic control board instead, but the principle is similar—a malfunctioning timer signal can cause continuous drainage.

If the timer is the issue, replacement is often the best solution. Before buying a new one, double-check your washer’s model number to ensure compatibility.

Look for Foreign Objects in the Tub

Small items like coins, buttons, or even socks can get lodged in the washer’s drainage system, blocking proper water flow or interfering with mechanical components.

Inspect the tub and drain filter (if your model has one). Remove any visible debris. If the washer still drains nonstop, check the agitator area and underneath the drum—sometimes objects get trapped in places that aren’t immediately visible.

Prevent future issues by always checking pockets before loading clothes. A simple habit like this can save you from repeated drainage problems.

Assess Water Inlet Valve Problems in Commercial Washer

Though less common, a stuck or leaking water inlet valve can contribute to drainage issues. If the valve fails to close properly, water may continuously enter the tub, making it seem like the washer is draining nonstop when it’s actually struggling to maintain the correct water level.

To test it, turn off the water supply and disconnect the inlet hoses. Check for debris or mineral buildup that could prevent the valve from sealing. If the valve appears damaged or doesn’t shut off completely, replacing it should resolve the issue.

When to Call a Professional

If you’ve tried all the above steps and your Speed Queen washer still drains continuously, it’s time to call a certified technician. Some problems—like internal wiring faults, advanced control board failures, or hidden mechanical breakdowns—require professional expertise.

Look for a Speed Queen-authorized service provider to ensure proper diagnosis and repair. Attempting complex fixes without the right tools or knowledge can lead to further damage.

Final Thoughts about Commercial Washer

Continuous draining in a Speed Queen commercial washer can stem from multiple causes, but methodical troubleshooting usually pinpoints the issue. Start with the simplest fixes (like checking for clogs) before moving to more complex components (like the control board).

Regular maintenance—such as cleaning filters, inspecting hoses, and avoiding overloading—can prevent many of these problems. If all else fails, professional help ensures your washer gets back to peak performance.

For official support, visit Speed Queen’s Service Page or contact their customer service for model-specific guidance.

Did this guide help you? Share your experience in the comments or ask any follow-up questions! 🛠️