High
3 on Halstead Ace HE 24

Your boiler has failed to light after five attempts and has safely locked itself out to prevent a gas build-up.

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

In the event of failure during an ignition sequence, (5 attempts), the Digital display shows fault code '3'.

From this model's manual
Verified against the Halstead/Halstead Ace He 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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All 12 fault codes on the Ace HE 24

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

124567AENo displayOP

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