High
E8 on Viessmann Vitodens 200-W B2KA-35

The boiler has shut itself down because it cannot detect its gas flame properly, which is a safety feature, and a qualified engineer can usually fix this without much fuss.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

The ionisation current lies outside the permissible range

From this model's manual
Verified against the Viessmann/Viessmann Vitodens 200 W B2ha B2ka 5772909 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

E1View →E2View →

All 83 fault codes on the Vitodens 200-W B2KA-35

Seeing a different code? Every code this model can display, in one place.

4C9A9b9C9E9F101819202830384044485051585990919293949899A3A7b0b1b5b7b8bAbbbCbdbEbFC1C2C3C4C5C6C7C8CdCFd6d7d8dAdbdCdddEdFE0E1E3E4E5E7EAEbECEdEEEFF0F1F2F3F8F9FAFCFdFEFF

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