High
e45 on Remeha Avanta Plus 28c

Your boiler's internal computer has lost its saved settings and is no longer communicating correctly with its own components.

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

Default parameters. Automation settings.

From this model's manual
Verified against the Remeha Avanta Plus 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

E36View →E43View →E44View →

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