Written by
Nora Halvorsen Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeEH4 / H4 / B4
ApplianceDryer
Decoding EH4
EH4, H4 and B4 name one fault: a line wiring error. Tech data sheet A11199902, for current dryers, words it as wrong line wiring or a wrong connection.
Recommended order
The owner guide labels H4 / B4 a known installation issue, so start there.
Get in touch with the installer.
Leave the dryer unplugged in case it needs to be moved before then.
No rewiring by owners
Household power runs through the line connections. Wrong line wiring or connection is the only cause on the sheet, and nothing is listed for owners to adjust.
Electrolux dryer service when the installer is not available
Cannot get hold of whoever installed the dryer? In San Francisco or the Bay Area, call (415) 449-0036 and give the EH4 code, the model number and the installer name. Read more at Electrolux dryer repair.
Model compatibility: Electrolux reuses codes across series and model years, so EH4 / H4 / B4 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
Line wiring error (wrong line wiring or connection).
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.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Electrolux appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
