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Appliance Fix Guide

Electrolux Washer error code

Electrolux Washer Error B3

Supply voltage too low.

Supply voltage too low.

Updated Aug 18, 2026
Diagnose before buying a part
Electrolux washer repair guide for error B3
Error codeB3Washer

Try these first

Start here before buying a part or taking the appliance apart.

  1. 1
    Check 1

    Check Voltage: Use a multimeter to check the voltage at the outlet to ensure it is not too high.

  2. 2
    Check 2

    Inspect Control Board: Look for any visible signs of damage or burnt components on the main control board.

  3. 3
    Check 3

    Consult a Technician: Due to the risk of dealing with high voltage, it is recommended to have a qualified technician diagnose the issue.

A quick explanation

What does B3 mean?

Supply voltage too low.

The answer you came for

How to fix Electrolux washer error B3

Start with the safest checks and work from simple to technical.

  1. 1

    Step 1

    1. Unplug the washer from the electrical outlet to ensure safety.

  2. 2

    Step 2

    2. Remove the top panel of the washer by unscrewing the screws holding it in place, typically located at the back.

  3. 3

    Step 3

    3. Locate the main control board, which is usually housed in a plastic casing near the top of the machine.

  4. 4

    Step 4

    4. Carefully disconnect all the wire harnesses attached to the old control board. It's a good idea to take a photo beforehand for reference.

  5. 5

    Step 5

    5. Remove the screws or release the clips holding the control board in its housing and take out the old board.

  6. 6

    Step 6

    6. Install the new main control board, securing it with the screws or clips, and reconnect all the wire harnesses to their correct terminals.

  7. 7

    Step 7

    7. Reattach the top panel, plug the washer back in, and run a test cycle to ensure the error is cleared and the machine functions properly.

Read the additional checks from the current guide

How to Fix B3 Error (Step-by-Step) Unplug the washer from the electrical outlet to ensure safety. Remove the top panel of the washer by unscrewing the screws holding it in place, typically located at the back. Locate the main control board, which is usually housed in a plastic casing near the top of the machine. Carefully disconnect all the wire harnesses attached to the old control board. It’s a good idea to take a photo beforehand for reference. Remove the screws or release the clips holding the control board in its housing and take out the old board. Install the new main control board, securing it with the screws or clips, and reconnect all the wire harnesses to their correct terminals. Reattach the top panel, plug the washer back in, and run a test cycle to ensure the error is cleared and the machine functions properly. Turn the appliance off, wait about 2 minutes, then turn it back on. Parts Availability Note: For this Electrolux/Frigidaire error code, exact OEM part numbers can vary by model revision and serial range. We’ve listed the most likely component(s), but confirm compatibility using your full model number before ordering. If no exact SKU is shown, use this guide for diagnosis first, then verify the matching OEM part on RepairClinic or PartSelect. Recommended Parts to Check No exact official OEM part number is listed here because the correct Electrolux washer part can vary by complete model number. These are targeted part-category searches, not universal fit claims. Electrolux washer drain pump Common replacement category: Drain pump Fit note: Exact OEM part number varies by complete Electrolux washer model number. Confirm compatibility before buying. Why this category can matter: drain, no-spin, or water-removal symptoms after hose and filter checks. Search Amazon for Electrolux washer drain pump Electrolux washer water inlet valve Common replacement category: Water inlet valve Fit note: Exact OEM part number varies by complete Electrolux washer model number. Confirm compatibility before buying. Why this category can matter: fill and slow-fill symptoms after supply checks. Search Amazon for Electrolux washer water inlet valve Electrolux washer door lock Common replacement category: Door lock / latch Fit note: Exact OEM part number varies by complete Electrolux washer model number. Confirm compatibility before buying. Why this category can matter: start, lock, or spin symptoms tied to door-lock feedback. Search Amazon for Electrolux washer door lock Before ordering: match the part to the complete Electrolux washer model number on the appliance tag. Still Not Working? If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure. Browse all Electrolux error codes: Electrolux Error Codes

If the code comes back

Do not keep replacing parts based only on the code. Repeat the safe checks above. If the fault remains, stop and arrange qualified service rather than ordering from the code alone.

What may be causing it?

  • Excessively high voltage from the power outlet
  • Visible damage or burnt components on the main control board
  • Main control board failure

These are possibilities to investigate, not proof that one part has failed.

Recommended part

Recommended part for this error code

No replacement part recommended for this code

The researched guidance for Electrolux Washer error B3 points to user-action and diagnostic steps above rather than a mapped replacement part. We will not invent a part or send you to an unrelated product.

Replacement options

Ready to replace your washer?

If repairing this washer no longer feels worthwhile, compare three replacement paths below.

Why shop your replacement on Amazon?

  • Fast, free delivery

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  • Convenient delivery options

    Select large appliances may offer scheduled or Room of Choice delivery.

  • Haul-away options

    Haul-away may be available for select appliances and delivery areas.

  • Installation help

    Installation or assembly may be available on select items.

Delivery and service options, fees, and availability vary by item, seller, and delivery ZIP code. Confirm available services at Amazon checkout.

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Make the money decision

Repair or replace calculator

Use the age and total repair estimate to get a simple comparison. This is guidance, not a guarantee.

Safety first

Disconnect power before opening panels or touching internal parts.

When to stop
  • Stop if you see burned wiring, melted connectors, water near electrical parts, or a gas smell.
  • Do not perform live-voltage testing unless you are trained and equipped for it.
  • Use the exact model manual or service information before replacing electronic controls.

Free quick sheet

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