High Lockout
31 on Vokera Easi-Heat 25

Your boiler is experiencing a communication or configuration error between internal electronic boards that prevents it from starting 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

Temporary fault code (Refer to section 7.10)

What causes this fault?

This fault occurs when the boiler's internal electronic brains stop speaking to each other. The most common reason is a communication failure between the main control board and the display panel, often caused by a loose wire or a failing circuit component. Because the two boards cannot confirm the boiler's safety settings, the system shuts down as a precaution.

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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