C0Ideal

Ideal C0: BCC activation fault

Checked against Ideal's own documentation: Ideal Heating: what does my boiler fault code mean?. Last reviewed October 2026. How we check

Check these first, then call an engineer

Ideal's general fault code guide describes C0 as: bCC activation fault.

What you can safely do

C0 comes back. Ideal says an engineer visit will be needed: quote the code when you call.

Find a Gas Safe engineer near you Opens the official Gas Safe Register search.

Applies to Ideal boilers (Ideal's general fault code guide). Codes can differ between models, so check your manual.

From Ideal's own fault tables. Your model name is usually on the front of the boiler or in the user manual.

Model	Meaning
Ideal boilers (Ideal's general fault code guide)	BCC activation fault

Can I fix Ideal C0 myself?

Only the checks listed above. If they don't clear it, it needs a Gas Safe registered engineer.

Last reviewed October 2026. Spotted something that doesn't match your manual? Email hello@boilercodes.co.uk and we'll check it. How we check