High
Green LED on every 0.5 seconds on Vokera Sabre 29HE

Your boiler has paused because the water pressure is too low or it is struggling to vent air properly.

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.

What the manual says

Manufacturer manual

Temporary fault — air pressure switch fault or low system water pressure; check pressure 1–1.5 bar

From this model's manual
Verified against the Vokera Sabre He Combi 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 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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