CodesErreur Logo
CodesErreur.comDiagnostic Database
Database Business Directory
Tools
Diagnostic ToolsNew Parts Locator
Community
CertificationsPRO Top Techs
B2B Services
Brands Manuals Specialists Job Board Elite Forum Academy
Premium
CodesErreur Logo

CodesErreur.com

Premium appliance diagnostics & repair database.
Powered by AI to help certified technicians worldwide.

Trusted by professionals in CH & FR

Platform

Error Code SearchAI Diagnostic ChatBrand Pokedex

Professionals

Elite Tech ForumElite Job BoardPremium Memberships

Corporate

Terms of UsePrivacy Policy

SAFETY DISCLAIMER

The technical information, diagnostic guides, error codes, and AI-generated suggestions provided on this website are intended exclusively for certified and qualified professionals. Appliance repair involves severe electrical hazards, high voltages, and mechanical risks that can result in fatal injury or severe property damage. If you are not a trained technician, do not attempt to repair any appliances. CodesErreur assumes no responsibility or liability for any damage, injury, or consequential losses resulting from the use of the information provided on this platform. You use all information entirely at your own risk.

© 2026 CodesErreur. All rights reserved.

Official Swiss Repair Partner: Electroassistance Terms of Service Privacy Policy
Back to Search
Siemens
Hob
Data independently verified by Elite B2B Technicians
Diagnostic Complet

Error Code U400 Siemens

Symptom / Description

Hob incorrectly connected to mains supply

Root Cause

The hob has been wired with incorrect voltage or phasing during installation.

Repair Instructions

UNLOCKED

Immediately disconnect the appliance from the power. The connection must be checked and corrected by a qualified electrician.

Esta solução resolveu o problema?

Need Help? Call a Technician Worldwide Siemens Parts Finder