Low
d.62 on Vaillant ecoTEC Plus 620

This code is simply an information display showing your boiler's internal setting for how much the temperature automatically drops overnight.

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

Night set-back: 0 to 30

Engineer required

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

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