What does the Alpha Section C fault code mean?

Your boiler has stopped working because the water pressure inside the system has dropped too low or there is trapped air causing a blockage.

How much does it cost to fix Alpha error code Section C?

Typical repair cost for the Alpha Section C fault is £80-180 including labour.

Locate the pressure gauge on your boiler; it should be between 1 and 1.5 bar.

CH system pressure below 1.0 bar, Pump circulating water (air in system), or Primary flow valve diaphragm damaged / Flow valve rod obstructed

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.

Almost always a stuck diverter valve on combis.

Step-by-step using the filling loop.