Electrolux Dryer H2 / B2 — What It Means & How to Fix It
H2 / B2 is the dryer's power-supply alarm — the control board sees abnormal incoming power and wants the power supply looked at.
What this code means
H2 / B2 flags a power-supply problem — the dryer's control detected unusual incoming voltage or power and, per Electrolux's guide, directs you to have the electrical supply checked.
Applies to Electrolux front-load dryers (EFME/EFMG series); the official guide lists H2/B2 as a power-supply issue and H4/B4 as incorrect wiring, so confirm which pair your display shows.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Utility-side voltage irregularity | Common | No — electrical professional |
| Loose outlet or breaker connection | Occasional | No — electrical professional |
What you can try yourself
- Unplug the dryer for a minute and plug it back in to clear a one-off glitch.
- Turn the dryer back on and watch: if the code repeats, the supply is genuinely unstable.
- Have the outlet and circuit checked by a licensed electrician before assuming the dryer is at fault.
When to call a technician
- Do not open the outlet, plug or panel yourself — line-voltage work belongs to a licensed electrician.
- If house lights flicker along with the code, stop using the dryer and call an electrician.
Typical professional repair cost: $0–$200 typically; an electrician's visit to verify supply runs about $100–$200
Frequently asked questions
Is H2/B2 something I can fix?
Usually not — it points at the power supply itself. Start by checking with your electric utility.
Could my dryer's outlet cause this?
A loose outlet or breaker connection can, which is worth an electrician's look before a service call on the dryer.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Electrolux codes
- Electrolux Dryer EF1 EF1 is the dryer's airflow alarm — the exhaust path can't breathe, so the dryer slows down and warns you about the blockage.
- Electrolux Dryer E42 Dryer E42 means 'door open' to the machine — it won't heat or tumble until the door registers as closed.
- Electrolux Dryer E4 E4 means the moisture sensor that tells the dryer when clothes are dry has failed — auto-dry cycles can't measure, but manual cycles still work.
- Electrolux Dryer H4 / B4 H4 / B4 means the dryer is seeing incorrect wiring, flagged by Electrolux as an installation issue — a moment to call your installer, not a parts supplier.
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