Low
d.02 on Vaillant ecoTEC plus Aquaplus

Your boiler is currently protecting itself by waiting for a short period before restarting to prevent unnecessary wear and tear.

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

Maximum burner anti cycling period at 20 °C flow temperature

Engineer required

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

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Related fault codes

d.00View →d.01View →d.03View →

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