High
Eb on Viessmann Vitodens 200-W B2HA-26

Your boiler has paused while it sets up its internal settings for burning gas safely, and it needs a reset and a check by a qualified engineer to finish the job.

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

Fault Eb (during automatic calibration of the combustion controller; check gap between ionisation electrode and burner gauze assembly, check gas type allocation, check flue system, then press reset button R)

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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All 83 fault codes on the Vitodens 200-W B2HA-26

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

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