High
32:0 on Viessmann Vitodens 200

Your boiler has been forced to shut down its water circulation pumps by an external safety device or a control signal from your heating system's management unit.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Influence of 'External lockout' signal on circulation pumps: All pumps are controlled

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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