Emergency
RED LED BLINKS on Vokera Compact A

Your boiler has detected an internal safety issue, likely involving overheating or a ventilation problem, and has automatically shut down to prevent damage.

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

High limit thermostat fault or air flow switch fault

From this model's manual
Verified against the Vokera Boiler Compact installation & service 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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