High
oF on Ideal Instinct2 24

Your boiler is currently stuck in a setup mode used for programming its internal computer chip and needs to be properly configured by a professional.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Display shows oF after pressing restart during Main PCB Replacement programming.

From this model's manual
Verified against the Ideal Instinct2 24 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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Related fault codes

C0View →C2View →FUView →

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