Electrolux Oven Error Code EtUb

EtUb indicates a boiler over-temperature fault, triggered when the internal boiler sensor (TBOI) detects that the boiler has exceeded its safe temperature limit. The oven stops the active cycle automatically to prevent damage. Common causes include low water in the boiler, heavy limescale buildup, or a BOT parameter that is set too low.

No, you should not attempt to continue using the oven while this error is active. The appliance has already halted the cycle as a safety measure to prevent damage from boiler overheating. Running additional cycles before resolving the root cause could damage the boiler, heating element, or surrounding components.

If the fix is simply a descaling procedure, costs are minimal, typically just the price of descaling tablets and your time. If a component like the boiler temperature sensor or water inlet valve needs replacement, repair costs including parts and labor could range from roughly $100 to $300 or more depending on your location and the specific parts required. A technician visit for diagnosis alone generally runs between $75 and $150.

Start by allowing the boiler to cool down completely before attempting any further action. If you have a Digit model, run a cleaning cycle using rinse and descale with two C25 tabs. If you have a Touch model, perform the Boiler Maintenance procedure through the appliance menu. If the error returns after descaling, the issue may require inspecting the water supply, the inlet valve, or the TBOI sensor.

A power reset may temporarily clear the error display, but the fault will return if the underlying cause has not been addressed. The boiler must first be allowed to cool, and the appropriate descaling or maintenance procedure must be completed. If the issue is a faulty sensor or misconfigured BOT parameter, those will need to be corrected by a technician.