High
01 on Alpha E-Tec Plus 28NX

Your boiler has failed to light its flame when asked to provide heating or hot water, and has safely locked itself out to prevent any issues.

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

Ignition failure - In the event of a demand for CH or DHW the boiler does not switch on within the preset time. Upon boiler commissioning or after an extended shut down the may go to 'lock out'

From this model's manual
Verified against the Alpha/Alpha E Tec Plus Nx 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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Related fault codes

02View →04View →

All 37 fault codes on the E-Tec Plus 28NX

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

02030405060708101516202324272931363738434445464748495160617075768398138139

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