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Error code reference

Electrolux Dryer Error Code B2

Power supply amplitude out of range (too HIGH voltage).

Electrolux codesElectrolux dryer codes

Power supply amplitude out of range (too HIGH voltage).

First step from the service manual

Check for power supply problems (too high voltage) or main board failure.

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

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What B2 means on a Electrolux dryer

The B2 error code on an Electrolux dryer indicates that the power supply amplitude has been detected as exceeding the acceptable voltage range for normal operation. The control board continuously monitors incoming line voltage, and when it senses voltage levels that are too high, it triggers this fault to protect the dryer's internal components from damage. This is a voltage regulation fault, not a mechanical failure, and it originates in the dryer's main control board circuitry where incoming power is sampled and evaluated.

High voltage conditions can originate from several sources outside the appliance itself. Utility grid fluctuations, faulty household wiring, a failing main electrical panel, or a degraded neutral connection can all cause elevated voltage readings at the dryer's outlet. A 240-volt dryer receiving voltage significantly above its rated input can cause stress on the heating element, motor windings, and electronic components over time, so the control board's detection of this condition is an important protective function.

The first diagnostic step is to measure the actual voltage at the dryer's outlet or terminal block using a reliable multimeter, confirming whether elevated voltage is truly present at the supply. If voltage readings are within acceptable range and the error persists, the main control board itself may be misreading the incoming supply due to an internal fault. In that case, the board is the likely failed component requiring replacement.

Source: manufacturer service documentation.

Common causes of B2

  1. 01

    Utility or household high voltage condition

    Wiring / connection

    Fluctuations from the utility grid or wiring issues in the home can push line voltage above the dryer's acceptable operating range. Measure voltage at the outlet or terminal block with a multimeter to confirm this is occurring.

  2. 02

    Faulty neutral or ground connection

    Wiring / connection

    A loose, corroded, or broken neutral wire in the home wiring or at the dryer's terminal block can cause voltage imbalance, resulting in one leg reading abnormally high. Inspect all connections at the terminal block and the outlet for signs of damage or looseness.

  3. 03

    Failed main control board

    Part replacement

    If the incoming voltage measures within normal range but B2 continues to appear, the control board's internal voltage sensing circuit may be defective and reporting a false high-voltage fault. Replacing the main board resolves this condition.

  4. 04

    Degraded or failing wall outlet or circuit breaker

    Part replacement

    A worn outlet or a breaker that is not maintaining proper contact can contribute to irregular voltage delivery. Testing with a known-good outlet or having the circuit inspected can rule this out.

See the test procedure for each cause

Frequently asked questions about B2

What does B2 mean on a Electrolux dryer?
The B2 code means the dryer's control board has detected that incoming power supply voltage is too high, outside the acceptable operating range. The dryer shuts down to protect its components from damage caused by excessive voltage. The issue can originate from the home's electrical supply or from a fault within the main control board itself.
Can I fix the B2 error on my Electrolux dryer myself?
Some causes of B2 are addressable without professional help, such as verifying and tightening connections at the dryer's terminal block. However, diagnosing actual voltage levels at the outlet requires a multimeter, and any wiring issues found inside the electrical panel or home wiring should be handled by a licensed electrician. If the main control board needs replacement, a technician familiar with appliance electronics is recommended.
Is it safe to keep using my dryer when the B2 code is showing?
No, you should not continue running the dryer while B2 is active. If the home's supply voltage is genuinely elevated, operating the dryer could damage the heating element, motor, and control electronics. Stop using the appliance until the voltage supply has been confirmed as normal or the faulty control board has been replaced.
How much does it cost to repair a B2 error on an Electrolux dryer?
If the cause is a genuine high voltage condition from the home's wiring, electrician fees to diagnose and correct wiring issues typically range from $75 to $250 or more depending on the scope of work. If the main control board is the faulty component, board replacement parts and labor costs generally range from $150 to $400 depending on the specific model and service rates in your area.
Will resetting the dryer clear the B2 error code?
Resetting the dryer by unplugging it for a few minutes may temporarily clear the B2 code, but the error will return if the underlying cause has not been addressed. If high voltage is present at the outlet, the board will detect it again and re-trigger the fault. A lasting fix requires either correcting the power supply issue or replacing the main control board if it is generating a false fault reading.

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