High
A01 on Vokera Condexa Pro

Your boiler has tried to light several times but has failed, likely because gas is not reaching the burner or the spark is not working.

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

5 failed attempts at ignition

From this model's manual
Verified against the Vokera Condexa Pro installation & service manual, page 57.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

What causes this fault?

This fault occurs when the boiler's control system fails to detect a flame after five attempts to start. The most common reasons are a lack of gas reaching the unit, a worn-out spark electrode that cannot jump the gap to light the fuel, or a faulty gas valve that isn't opening correctly.

This fault is slightly more common during the first cold snap of winter when gas valves that have been dormant all summer can occasionally stick.

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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Avoid the next call-out bill

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