High Lockout
Fault light is on on Vokera Compact HE

Your boiler has detected a general internal error and has locked itself out for safety, meaning your heating and hot water will not work until it is reset or repaired.

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

The appliance has detected a fault (refer to manual section 3.3)

What causes this fault?

This fault occurs when the boiler's internal computer detects an inconsistency in the ignition process or a failure in one of its safety sensors. The most common reasons are that the boiler is struggling to generate a spark to light the gas, or a faulty sensor is sending incorrect temperature readings to the main control board.

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.

Find a Gas Safe engineer
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