Written by
Annika Berglund Appliance Care EditorPublished October 29, 2026
VERIFIED
Error codeE40
ApplianceWasher
E40 is a voltage message, and the exact wording changes with the series.
Reading on the WM76S and WM76-86
Here the display is a warning of fluctuating voltage. A long dip under 180 V, or readings over 260 V, were picked up and may interfere with operation. What the manual asks is that you inspect the mains network supplying the washer.
Reading on the WM75.C-P
The wording is simply that the voltage value lies outside the permitted range. Run the program again, and if the code comes back, arrange a technician visit.
When the supply check does not clear E40, phone (415) 993-3547 and ask about Asko washer repair. Have the code, your series and what you found out about the power supply ready.
Model compatibility: Asko reuses codes across series and model years, so E40 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
E40 reports voltage out of range, described as a prolonged drop below 180 V or above 260 V on the WM76S.
Important safety warning. Do not attempt repairs involving electrical components, water lines, sealed cooling systems or anything behind a panel. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Asko 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 Asko appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
