What does the Ferroli A-1 fault code mean?

Your boiler is failing to detect any power, meaning it has completely shut down and cannot heat your home or provide hot water.

How much does it cost to fix Ferroli error code A-1?

Typical repair cost for the Ferroli A-1 fault is £80-150 including labour.

Check your consumer unit (fuse box) to see if the boiler's circuit breaker has tripped.

No mains electricity/switches off/fuse blown.

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

Work through these before the call-out.

Almost always a stuck diverter valve on combis.

Safety-critical — turn off, read this.