How much does it cost to fix Ferroli error code Microprocessor faulty?

Typical repair cost for the Ferroli Microprocessor faulty fault is £300-500 including labour.

Microprocessor faulty High

Ferroli Microprocessor faulty Fault Code

Q: What does the Ferroli Microprocessor faulty fault code mean?

The computer that controls your boiler is experiencing an internal error, which means the system cannot safely start or regulate your heating and hot water.

Also written as MICROPROCESSORFAULTY — same fault.

The Ferroli Microprocessor faulty fault code means: the computer that controls your boiler is experiencing an internal error, which means the system cannot safely start or regulate your heating and hot water.. It appears on 1 Ferroli model in our database.

Technical description: Microprocessor operation faulty

Typical repair cost £300-500 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Ferroli models that show the Microprocessor faulty fault code

Click a model for the full fault code list and model-specific repair notes.

Econcept 100 Repair: £300-500

Source

Ferroli Microprocessor faulty fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026