H21-060 Emergency

Ideal H21-060 Fault Code

Also written as H21060 — same fault.

The Ideal H21-060 fault code means: your boiler has detected that the seals around the combustion area are not airtight, which prevents the unit from operating safely.. It appears on 6 Ideal models in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Sealed chamber gaskets kit
Typical repair cost £150-250 (including labour)

Engineer required

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

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Ideal models that show the H21-060 fault code

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

Source

Ideal H21-060 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026