Low
d.06 on Vaillant Home System

Your boiler is displaying the target temperature for your hot water, which is a normal status reading rather than a breakdown.

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.

What the manual says

Manufacturer manual

Hot water set target temperature: Current value (Combination unit only)

From this model's manual
Verified against the Vaillant Home System installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Press the 'Back' or 'i' button to return to the main displayAdjust your hot water temperature dial if you wish to change this valueNo action is required as this is an information code, not a fault

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d.00View →d.07View →

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