Low
AP on ECA Proteus Premix 24 HCH

Your boiler is simply running a routine cycle to clear air bubbles out of the system and is not actually at fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Automatic air vent mode (Air Purge Mode). The boiler automatically activates to discharge air in the central heating installation for 160 seconds.

From this model's manual
Verified against the Eca Proteus Premix 24 Hch 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.

DIY fix possible

Wait for the 160-second countdown to complete naturallyEnsure your radiator valves are open to allow air to moveCheck the system pressure gauge is between 1 and 1.5 bar

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