62 High

Viessmann 62 Fault Code

The Viessmann 62 fault code means: your boiler has shut down because it has detected an unsafe build-up of heat or a lack of water flow, triggering a safety cut-out to prevent damage.. It appears on 1 Viessmann model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: High limit safety cut-out activated
Typical repair cost £120-350 (including labour)

DIY fix possible

Check that your central heating pressure is between 1.0 and 1.5 barEnsure all radiator valves are fully open to allow water flowOnce the boiler has cooled down, press the 'Reset' button on the control panel

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Viessmann models that show the 62 fault code

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

Source

Viessmann 62 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 7 July 2026