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Error code reference

Electrolux Washer Error Code H2/B2

Supply voltage too high (incoming voltage).

Electrolux codesElectrolux washer codes

Supply voltage too high (incoming voltage).

First step from the service manual

Refer to test (18) - Check power in for voltage under load.

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

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What H2/B2 means on a Electrolux washer

The H2/B2 error code on an Electrolux washer indicates that the incoming supply voltage is too high. The machine's control board continuously monitors the AC line voltage supplied to the unit, and when that voltage exceeds the acceptable operating threshold, the control triggers this fault to protect internal components. This is a power supply fault, not a mechanical or component failure within the washer itself.

The primary diagnostic procedure for this code is test (18), which involves checking the incoming power under load conditions. Voltage under load is the relevant measurement because voltage that appears normal at idle can behave differently when the washer draws current during operation. A technician should measure the voltage at the washer's terminal block or power inlet while the machine is running, not just at the wall outlet under no-load conditions. Readings consistently above the rated supply voltage range indicate a utility or wiring issue upstream of the appliance.

Common sources of excessive incoming voltage include problems at the utility transformer serving the home, an improperly wired circuit with a miswired neutral, or loose neutral connections in the main panel that cause voltage imbalance. In rare cases, a faulty control board may misread the incoming voltage and trigger a false H2/B2 fault even when supply voltage is within spec. Always rule out an actual overvoltage condition with a calibrated meter before suspecting the control board.

Source: manufacturer service documentation.

Common causes of H2/B2

  1. 01

    Utility supply overvoltage

    Wiring / connection

    The electrical utility transformer serving your home may be delivering voltage above the normal range. This affects all appliances on the circuit and requires the utility company to correct it.

  2. 02

    Loose or faulty neutral connection

    Wiring / connection

    A loose neutral wire in the main electrical panel or at the outlet can cause voltage imbalance, pushing voltage on one leg above normal levels. Inspect the panel and outlet connections for loose or corroded terminals.

  3. 03

    Miswired circuit or outlet

    Wiring / connection

    An improperly wired outlet or circuit, such as a hot wire connected where a neutral should be, can deliver abnormal voltage to the washer. A licensed electrician should verify the circuit wiring is correct.

  4. 04

    Faulty control board misreading voltage

    Part replacement

    If the incoming supply voltage measures within the acceptable range under load but the error persists, the control board's internal voltage sensing circuit may be defective. Replacing the control board would be required to resolve a false fault.

See the test procedure for each cause

Frequently asked questions about H2/B2

What does H2/B2 mean on a Electrolux washer?
H2/B2 indicates that the washer's control board has detected incoming supply voltage that is too high. The machine monitors the AC line voltage continuously, and this code triggers when that voltage exceeds the acceptable threshold. It is a power supply fault, meaning the issue originates from the electrical supply rather than a component inside the washer itself. The recommended first diagnostic step is to check the incoming power voltage under load using test (18).
Can I fix the H2/B2 error myself?
Diagnosing this error requires measuring the incoming AC voltage at the washer's power inlet while the machine is under load, which involves working near live electrical connections. If the issue is at the utility level or inside the main electrical panel, a licensed electrician should handle the repair. If the control board is identified as the cause after confirming correct supply voltage, a qualified technician should replace it.
Is it safe to use my washer while it shows H2/B2?
No, you should not continue operating the washer while this code is active. An overvoltage condition can damage the control board, motor, and other internal components. Stop using the machine and have the incoming supply voltage checked before running another cycle.
Will resetting the washer clear the H2/B2 error?
A reset may temporarily clear the code, but if the root cause is an ongoing overvoltage condition in your home's electrical supply, the fault will return as soon as the washer attempts to operate again. The underlying voltage issue must be identified and corrected first for the error to stay cleared.
How much does it cost to fix a H2/B2 error on an Electrolux washer?
If the problem is a utility supply issue, the cost may be little to nothing if the utility company is responsible for the correction. Electrician fees to inspect and repair household wiring or panel connections typically range from $100 to $400 or more depending on the scope of work. If a control board replacement is required, parts and labor costs can range from $200 to $500 depending on the specific model and service rates in your area.

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