Low
S.60 on Viessmann Vitodens 222-F B2TF

Your boiler has automatically turned off the heating because the outside temperature is warm enough that it thinks your home doesn't need it.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Summer mode active (outside temperature economy function)

From this model's manual
Verified against the Viessmann Vitodens 222 F B2tf installation & service manual, page 110.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check if the outside temperature is actually warm enough to justify no heating.Access the boiler control panel and adjust the 'Summer/Winter' threshold or heating curve settings.Ensure 'Summer Mode' is not manually selected if you require heating.

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