Low
d.67 on Vaillant Home System

Your boiler is currently taking a temporary rest to prevent it from turning on and off too frequently, which helps protect the internal components.

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

Remaining burner anti-cycling time (setting under d.02): Current value in minutes

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

Wait 15 to 20 minutes for the timer to count down to zeroCheck that your room thermostat is turned upEnsure radiators are bled to allow proper heat circulation

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Related fault codes

d.02View →S.08View →

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