Low Service
63:2 to 63:14 on Viessmann Vitodens 050-W

Your boiler is notifying you that a specific pre-set service interval or scheduled maintenance time has elapsed and a routine check-up is now required.

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

every 2 to every 14 days

What causes this fault?

This notification is triggered by the boiler's internal timer reaching a pre-set date or number of burner operating hours. It serves as an automated reminder that the manufacturer's recommended maintenance window has arrived to ensure continued efficiency. It is not caused by a mechanical failure, but rather by the system tracking its own usage history.

Engineer required

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

Find a Gas Safe engineer
Search the official register →

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