Emergency
E095 on Vokera Unica MAX

Your boiler has detected that it is burning fuel inefficiently, which creates a safety risk due to the potential build-up of dangerous gases.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

combustion fault/high CO

Shared across the Unica MAX range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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All 27 fault codes on the Unica MAX

Seeing a different code? Every code this model can display, in one place.

E010E011E020E021E022E023E024E030E040E041E042E058E060E065E067E070E077E080E085E086E088E090E091E094E097E099

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