High
Connection on Vaillant ecoTEC Plus 610

Your boiler has lost the ability for its main control brain to talk to the display screen, meaning it cannot receive commands or function correctly.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

NocommunicationbetweenthePCBandtheuserinterface | Electronicsdefective

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F.61View →F.62View →F.70View →

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