What does the Alpha 20 fault code mean?

Your boiler thinks a flame is still burning even though it has been told to turn off, causing the system to shut down for safety.

How much does it cost to fix Alpha error code 20?

Typical repair cost for the Alpha 20 fault is £120-£350 including labour.

Flame detected when it should be out

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

Older boilers — thermocouple, draught, gas supply.

7 signs repair isn't worth it anymore.

Break-even maths on monthly cover.