SUD Whirlpool Washer Error Code: A Troubleshooting Guide

Introduction

Having issues with your Whirlpool duet washer displaying a SUD error code? This frustrating suds or excessive foaming error can stop your washer mid-cycle, but don’t worry – it can be fixed! This detailed guide will walk you through how to troubleshoot and resolve the SUD Whirlpool Washer error code on your washing machine. Keep reading to learn what causes the SUD code, the step-by-step process to diagnose the issue, and how to get your washer back to washing clothes smoothly.

What is the SUD Error Code?

The SUD error code stands for “suds” and indicates that the washing machine has detected excessive foaming or sudsing during the wash cycle.

Modern high-efficiency (HE) washing machines are designed to use only a small amount of water. When suds build up, they can interfere with the washing machine’s ability to rinse clothes properly. Suds are dispensed when it senses water detected entering the machine.

Excessive suds can cause the washer to pause mid-cycle and show a SUD code on the display panel. The washer may also make noises or vibrate more as it tries to complete the cycle with all the suds.

Some key causes of the SUD error code include:

• Using too much HE laundry detergent
• Using a non-HE detergent
• Overloading the washer
• Issues with the drain system

While excessive suds are the main culprit, ruling out all possibilities is key when troubleshooting the SUD code.

Step-by-Step Guide to Troubleshooting the SUD Error

Follow this step-by-step guide to diagnose and fix a SUD error code on your washing machine:

1. Verify Detergent Type and Amount

The first thing to check is the type of laundry detergent you’re using, and how much. HE washers require HE detergent, which produces fewer suds.

Using a non-HE detergent can create a surplus of suds. Even too much HE detergent can be problematic.

Refer to the detergent manufacturer’s instructions and your washer manual for ideal detergent amounts based on load size. In most cases, you’ll need to use much less detergent in an HE washer.

If you recently started using more detergent or switched detergent types, try reducing the amount to the recommended dose.

2. Run a Rinse Cycle

If too many suds appear to be the issue, run a rinse cycle with no washing detergent. This will help flush out any excess soap suds from the washer tub.

Select a “Rinse & Spin” cycle on your machine. Do not add detergent. This rinse-only cycle should clear out leftover suds.

3. Check the Drain System

A problem with the drain can also lead to suds building up. Check for any kinked inlet hoses or clogs in the hose.

Remove the drain hose from the washer and ensure it’s clear of debris. Inspect the drain pump filter and clean it out if needed.

Make sure the drain pump is working properly and draining water as it should. A drain issue allows sudsy water to remain in the washer tub.

4. Inspect the Pressure Switch

The pressure switch helps the washer monitor water levels. Verify the pressure switch hose is securely connected with no leaks.

Make sure the pressure switch itself is properly hooked up to the washer. If it’s misaligned or defective, it can give false readings to the washer control unit.

You may need to replace the pressure switch if it’s damaged or continuously malfunctioning.

5. Check Water Connections

Leakages or clogs in the water supply lines can also contribute to high suds.

Examine all water connections to the washer and supply hoses. Look for cracks or loose fittings. Tighten any leaky connections.

Remove the water supply hoses and check the washers’ inlet screens. Clean out any accumulated debris clogging the screens.

6. Test the Dispenser

The automatic detergent and fabric softener dispenser should release detergent at the proper time during the wash cycle. Follow these steps to fully test the dispenser:

• Remove the dispenser drawer from the washing machine. Check for any debris blocking the detergent or softener compartments.
• Look for any cracks, damage, or issues with the dispenser drawer. Make sure it slides in and out smoothly.
• Check where the dispenser connects inside the washer. Verify no hoses are crimped or connections are loose. Tighten if needed.
• Examine the dispenser motor and linkage. Make sure the release mechanism moves properly. Lubricate with non-detergent oil if stiff.
• Manually activate the dispenser motor and watch it cycle. Verify it rotates and releases detergent as expected.
• Check the dispenser switch and contacts with a multimeter. Confirm the switch sends the signal to release when required in the cycle. When testing the dispenser switch contacts with a multimeter, here are the expected readings:
  • Dispenser switch closed – With the switch activated, you should measure continuity, or 0 ohms resistance, between the common and normally open switch contacts.
  • Dispenser switch open – With the switch in the resting open state, you should see no continuity, or infinite resistance, between the switch contacts.
  • Dispenser motor windings – You should measure around 1400 ohms resistance between the two motor winding contacts.
• Slowly add water to the detergent and softener compartments. Make sure water flushes out the products and leaves no residue.
• Reinstall the dispenser drawer and run a test cycle with detergent. Check that the dispenser dispenses detergent at the right time.
• Observe the water level and amount of suds as the cycle runs. If it over-suds, there is likely still a dispenser issue.

Taking the time to fully test all functions and parts of the dispenser will help you pinpoint any deficiencies contributing to excess suds.

Run a test cycle and verify the dispenser dispenses detergent when expected. A malfunctioning dispenser can lead to excess suds.

7. Recheck with Less Detergent

After fixing any issues found during troubleshooting, run a test cycle with a reduced amount of HE detergent.

Hopefully, the SUD error will not appear again. Too much detergent for your particular machine’s load size is likely the main reason for over-suds.

Remember to consult your detergent container and owner’s manual for ideal detergent amounts. If the SUD code is fixed, you’ve found the solution!

8. Replace Control Unit

If all other washer parts check out okay, the main electronic control unit itself may be defective.

If the suds detection system continues to malfunction and display error codes, replacing the central control unit is the next step.

Getting Your Washer Back on Track

When that dreaded SUD shows up on your washer, don’t worry – in most cases the fix is simple. Just follow the troubleshooting steps to pinpoint the real problem. Using the proper amount of HE detergent for your machine is key. With the issue resolved, your washing machine will be back to providing clean, sud-free laundry. For further troubleshooting help, feel free to check out our YouTube or our Website.