Written by
Nora Halvorsen Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeEF1 / F1
ApplianceDryer
Air cannot get out freely when a dryer shows EF1 or F1: the duct that carries the air flow is clogged or blocked. On the technical data sheets the label reads “Vent Blocked”.
What owners can look at
Start with the lint filter.
Look along the exhaust tube for sharp bends or anything stopping the air, and inspect the vent exit.
Take out whatever debris turns up.
Cleaning the one way vent and testing that it works is also mentioned on the data sheet.
When it will not go away
For a code that persists, the manual speaks of a known installation issue. Its advice is to talk to the installer.
Items for a technician
A high vent restriction.
The exhaust control thermistor.
The inlet control thermistor.
The electronic control board.
The sheet lists these as possible conditions beyond the vent.
Codes to compare
EF3 is the max timeout timer, which can trace back to a blocked exhaust
If EF1 comes back after the vent checks, call (415) 449-0036 from anywhere in San Francisco or the Bay Area. Tell us what the lint filter and exhaust looked like, and give the model number. More is under Electrolux dryer repair.
Model compatibility: Electrolux reuses codes across series and model years, so EF1 / F1 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Ventilation blocked: the air flow duct is clogged or blocked.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Electrolux appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
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Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
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Ready to get your Electrolux appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
