Low Lockout
67:0 to 67:60 on Viessmann Vitodens 300-W

Your boiler is notifying you that the hot water temperature setting is currently limited or being adjusted across its standard range.

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.

Technical description

DHW set value adjustable from 0 to 60°C

What causes this fault?

This fault occurs when there is a communication error or a logic mismatch within the boiler's internal computer system regarding hot water temperatures. It is often caused by a failing electronic control board or a corrupted memory module that can no longer process the correct settings for your taps and showers.

DIY fix possible

Check the hot water temperature settings on the boiler control panelAdjust the dial or digital temperature setting to your preferenceRestart the boiler to clear the notification from the display

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