Electrolux Dryer Error Codes — Complete List

Electrolux dryers lead with EF1, the blocked-vent alarm, alongside E42 for an open door and E4 for a failed humidity sensor. H2 / B2 and H4 / B4 are supply messages: the first a power-supply problem for your electric company, the second incorrect wiring for your installer.

• 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.
• E42 Dryer E42 means 'door open' to the machine — it won't heat or tumble until the door registers as closed.
• 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.
• H2 / B2 H2 / B2 is the dryer's power-supply alarm — the control board sees abnormal incoming power and wants the power supply looked at.
• 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.

Don't see your code?

These are the codes in Electrolux's own dryer error-code guide. Others exist on some models but aren't documented there.

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