What does the Ideal F9 or L9 or F8 or L8 fault code mean?

Your boiler's main electronic brain has lost its programming or failed, meaning it doesn't know how to run your heating safely.

How much does it cost to fix Ideal error code F9 or L9 or F8 or L8?

Typical repair cost for the Ideal F9 or L9 or F8 or L8 fault is £200-450 including labour.

Manufacturer manual

PCB UNCONFIGURED OR FAULTY SEE SECTION 3.19 IF FAULT PERSISTS REPLACE PCB

Shared across the i-mini range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

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

Boiler cover options

A cover plan would handle faults like F9 or L9 or F8 or L8: no call-out fees, no surprise bills.

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Seeing a different code? Every code this model can display, in one place.