Vitotronic 050/200-H Low

Viessmann Vitotronic 050/200-H Fault Code

Also written as VITOTRONIC050200H — same fault.

The Viessmann Vitotronic 050/200-H fault code means: your heating system is essentially ignoring its outdoor weather sensors once the temperature drops below freezing, which may cause it to run at a constant temperature regardless of the weather.. It appears on 5 Viessmann models in our database.

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: Activates after 0°C / 32°F outdoor temperature
Typical repair cost £120-250 (including labour)

Engineer required

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

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Viessmann models that show the Vitotronic 050/200-H fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Viessmann Vitotronic 050/200-H fault code information on this page is sourced and cross-checked against the official Viessmann service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026