High
30 on Viessmann Vitodens 111-W B1LD 35kW

Your boiler has stopped because its sensor that measures the water temperature is reporting a fault, and it may also have a blockage in the burner, so it has shut itself down to stay safe until it's checked.

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

Burner blocked. Short circuit, boiler water temperature sensor.

From this model's manual
Verified against the Viessmann/Viessmann Vitodens 111 W B1ld 5697789 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

F22View →F23View →F28View →

All 28 fault codes on the Vitodens 111-W B1LD 35kW

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

0A0C10183850515859A3A9b0b7b8E3E5F0F1F2F3F4F8F9FAFCFdFF

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