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Error code reference

Electrolux Dryer Error Code 0xB1

Power Supply Frequency Out of Range

Electrolux codesElectrolux dryer codes

Power Supply Frequency Out of Range – Power Supply Frequency out of configured range.

First step from the service manual

Verify that the Power Supply is per the product specification (208/240 VAC).

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What 0xB1 means on a Electrolux dryer

Error code 0xB1 on an Electrolux dryer indicates that the control board has detected a power supply frequency outside of the acceptable operating range. The dryer's control system continuously monitors incoming AC line frequency and compares it against the configured specification. When the detected frequency deviates beyond the allowed tolerance, the board triggers this fault to prevent operation under potentially damaging electrical conditions.

Electrolux dryers are designed to operate on 208/240 VAC power at a standard frequency of 60 Hz in North American markets. The control board uses frequency sensing circuitry to validate that the incoming power matches this specification before allowing normal operation. Frequency irregularities can originate from the utility supply itself, from wiring issues in the home's electrical panel, or from a malfunctioning control board that is misreading an otherwise normal supply.

The most important first diagnostic step is to confirm that the dryer is connected to a proper 208/240 VAC dedicated circuit. Using a true RMS multimeter capable of measuring AC frequency, verify that the line frequency at the outlet or terminal block reads approximately 60 Hz. If the supply checks out correctly and the fault persists, the control board's frequency detection circuit may be faulty and the board itself may require replacement.

Source: manufacturer service documentation.

Common causes of 0xB1

  1. 01

    Incorrect or unstable utility power frequency

    Wiring / connection

    The incoming AC line frequency from the utility supply may be fluctuating or out of the standard 60 Hz range. This can happen during grid disturbances or in areas with non-standard power infrastructure, and can be confirmed with a true RMS multimeter measuring frequency at the dryer's outlet or terminal block.

  2. 02

    Dryer connected to incorrect voltage circuit

    Wiring / connection

    The dryer requires a dedicated 208/240 VAC circuit. If it is connected to a 120 VAC outlet or a shared circuit with voltage irregularities, the control board may log this fault. Verify the outlet or terminal block is supplying the correct voltage per the product specification.

  3. 03

    Loose or faulty wiring at the power connection

    Wiring / connection

    Loose connections at the dryer's terminal block or at the wall outlet can introduce electrical noise or intermittent drops that affect how the control board reads the incoming frequency. Inspect all power connections for tightness and signs of arcing or heat damage.

  4. 04

    Faulty main control board

    Part replacement

    If the power supply has been confirmed as correct at 208/240 VAC and approximately 60 Hz, the frequency sensing circuitry on the control board itself may have failed and is generating a false reading. In this case, the control board would need to be replaced.

  5. 05

    Use of a power strip, extension cord, or generator

    Wiring / connection

    Running the dryer through an extension cord, power strip, or a portable generator that does not output a stable 60 Hz frequency can trigger this error. The dryer must be connected directly to a properly rated wall circuit.

See the test procedure for each cause

Frequently asked questions about 0xB1

What does 0xB1 mean on a Electrolux dryer?
Error code 0xB1 means the dryer's control board has detected that the incoming power supply frequency is outside the acceptable configured range. The dryer monitors the AC line frequency continuously and will trigger this fault when it falls out of tolerance. The first step is to confirm the dryer is connected to a proper 208/240 VAC dedicated circuit supplying the correct frequency.
How do I fix error code 0xB1 on my Electrolux dryer?
Start by verifying that the dryer's power supply meets the 208/240 VAC specification using a multimeter capable of measuring AC frequency. Check that the outlet or terminal block connections are secure and show no signs of damage or arcing. If the supply checks out correctly and the error persists, the main control board may have a faulty frequency sensing circuit and may need to be replaced by a qualified technician.
Is it safe to use my Electrolux dryer when error code 0xB1 is showing?
It is not recommended to continue operating the dryer while this code is active. The error indicates the control board has flagged an out-of-range power condition, and running the appliance under incorrect electrical conditions can cause damage to internal components. Have the power supply verified and the issue resolved before resuming use.
Will resetting my Electrolux dryer clear the 0xB1 error?
A reset may temporarily clear the error code, but if the underlying power supply issue has not been corrected, the fault will return once the dryer resumes monitoring the line frequency. Address the root cause at the electrical supply or wiring level first. If the control board is faulty, a reset will not permanently resolve the problem.
How much does it cost to repair a 0xB1 error on an Electrolux dryer?
If the fix involves correcting the home's electrical circuit or outlet, costs can range from minimal to a few hundred dollars depending on the electrical work required. If the main control board needs replacement, parts and labor combined typically range from $150 to $400 or more depending on the model and local labor rates. Getting a professional diagnosis first can help avoid unnecessary parts replacement.

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