High
08 on Alpha Intec 50CS

Your boiler has reached its safety limit for automatic restarts after repeated failures, meaning it has locked itself out to prevent further 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

Maximum number of resets - Maximum number of resets reached (5)

From this model's manual
Verified against the Alpha Intec 50cs installation & service manual, page 47.
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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