Low
A5:5 on Viessmann Vitodens 050-W

Your boiler has temporarily stopped the heating pump to prevent it from running unnecessarily, which is a normal part of its energy-saving settings.

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

With heating circuit pump logic function

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

A5:0View →

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