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FISHER-PAYKEL Sud LOC

Fisher & Paykel Washing Machine Error Code Sud LOC: Excessive Suds Detected

Clear meaning, realistic next steps, and safe guidance without turning the page into a long repair manual.

What it means

The washer has detected too many suds (foam) in the drum. Excess suds prevent the drum from rinsing effectively and can cause the washer to extend the cycle or stop. This is almost always caused by using too much detergent or the wrong type.

Severity

Low - usually safe to check with basic user-accessible cleaning or inspection on the Fisher & Paykel washing machine.

Can you fix it yourself?

Yes - DIY Friendly

Most likely cause

Too much detergent used — even a small excess creates large amounts of foam

Also displayed as Sud LOC, Sud, SUDS on some models.

Estimated time for safe first checks: 30–45 min including auto rinse cycle.

Step-by-Step DIY Fix Guide

  1. SAFETY: No safety risk — allow the washer to complete its suds-reduction cycle.
  2. Do not add more detergent or open the door while the machine is trying to reduce suds.
  3. Allow the washer to run through its automatic suds-reduction rinse (this may take 20–30 extra minutes).
  4. Once complete, run an empty rinse cycle with no detergent to clear any residue.
  5. Clean the detergent dispenser drawer with warm water.
  6. For future loads, use HE (High Efficiency) detergent and follow the dosage on the label — less is almost always better.

If the warning comes back after restart

  • If airflow still seems weak after the basic checks, the fan path or a deeper obstruction becomes more likely.
  • If the warning returns immediately after a clean restart, the sensor or wiring path becomes more likely than a one-time glitch.
  • Sud LOC appears consistently when using correct HE detergent in the recommended amount

What This Error Means

The Sud LOC fault code on your Fisher & Paykel Washing Machine means: The washer has detected too many suds (foam) in the drum. Excess suds prevent the drum from rinsing effectively and can cause the washer to extend the cycle or stop. This is almost always caused by using too much detergent or the wrong type. This fault may also appear as Sud, SUDS on some models.

The most common cause is: too much detergent used — even a small excess creates large amounts of foam.

This fault is user-fixable in many cases. Suds LOC should not require professional service. If it appears consistently with correct HE detergent dosage, the pressure sensor or suds detection system may need inspection.

Most Likely Cause by Symptom

The Fisher & Paykel washing machine may stop, pause, or refuse to complete the cycle normally.

Likely cause: Too much detergent used — even a small excess creates large amounts of foam

Check first: SAFETY: No safety risk — allow the washer to complete its suds-reduction cycle.

Excess foam or detergent residue may be visible.

Likely cause: Using non-HE (standard) detergent in a high-efficiency washer

Check first: Do not add more detergent or open the door while the machine is trying to reduce suds.

The warning may return immediately because the appliance is detecting an internal fault.

Likely cause: Detergent dispenser not cleaned — old detergent residue activates during the cycle

Check first: Allow the washer to run through its automatic suds-reduction rinse (this may take 20–30 extra minutes).

Common Causes

  • Too much detergent used — even a small excess creates large amounts of foam
  • Using non-HE (standard) detergent in a high-efficiency washer
  • Detergent dispenser not cleaned — old detergent residue activates during the cycle
  • Washing heavily soiled items that release grease into the water

What Not to Do

  • Do not add more detergent thinking the machine needs it — extra detergent makes the problem significantly worse

Model and Display Variation Notes

Model-family notes

  • Fisher & Paykel washing machine display wording and code formats can vary by series.
  • If your model behaves differently, check the owner manual before trying any deeper maintenance step.
  • Some models may display the same fault as Sud LOC, Sud, SUDS.

Display and panel differences

  • Some control panels show this issue as Sud LOC, Sud, SUDS instead of only Sud LOC.
  • Panel wording and whether the code appears with letters, numbers, or a longer variant can differ by model family.

Parts, Tools and Service Options

Common parts

  • Pressure sensor (~$20–$50) if suds detection is falsely triggering (varies) - consult technician

Manual and model check

Check your exact model and manual before ordering any Fisher & Paykel washing machine parts.

Suggestions in this section are organized to support the troubleshooting flow first. Any future affiliate relationships should be disclosed clearly.

When Not to Keep Troubleshooting

Sud LOC appears consistently when using correct HE detergent in the recommended amount

How to Prevent It Recurring

  • Use only HE-labelled detergent and measure carefully — a tablespoon too much can cause excessive suds in a modern efficient washer

Related Error Codes

Extra notes

  • This page is based on Fisher & Paykel support material and stays conservative where model-specific guidance may vary.
  • The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.

Source and model notes

Last reviewed: 2026-04-09

Based on: Based on Fisher & Paykel support material and edited into consumer-safe guidance for the exact code family on this page.

View Fisher & Paykel North America Support

Model coverage note: Fisher & Paykel washing machine code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.

Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.

Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.