What does the Alpha E04 fault code mean?

Your boiler is struggling because it cannot detect enough water flowing through its internal system, which prevents it from safely heating your home.

How much does it cost to fix Alpha error code E04?

Typical repair cost for the Alpha E04 fault is £80-150 including labour.

Check your boiler's pressure gauge on the front panel; it should be between 1.0 and 1.5 bar

Inadequate circulation / No water

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Six most common causes of dropping pressure.

Each noise points to a different fault.

7 signs repair isn't worth it anymore.