Low
d.02 on Vaillant ecoFIT Pure 418

Your boiler is taking a planned temporary break to prevent the system from turning on and off too frequently, which helps save energy and protect internal parts.

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

Burner anti-cycling time in heating mode

DIY fix possible

Wait 15-30 minutes for the countdown timer to finish naturallyCheck that your radiators are turned up to allow heat to circulateEnsure the room thermostat is set to a temperature higher than the current room temperature

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Related fault codes

d.00View →d.01View →

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