Low
00:5 on Viessmann Vitodens 100-W / 200-W

Your boiler is correctly configured for your specific heating setup and this code is simply informing you how your system is currently set up to operate.

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

System design 2, 3: 1 heating circuit without mixer A1 and 1 mixer circuit M2, without DHW heating

Engineer required

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

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