What does the Ideal H2 fault code mean?

Your boiler has detected an internal electronic communication failure or a technical error that requires a deep-level diagnosis by a professional.

How much does it cost to fix Ideal error code H2?

Typical repair cost for the Ideal H2 fault is £120-450 including labour.

Ideal H2 Fault Code: What It Means & How to Fix It

Technical description

ALTERNATING 'H' '2' GO TO FRAME 91

What causes this fault?

This fault occurs when the boiler's internal computer brain loses its ability to send or receive messages across its circuitry. The most common reason is an electronic failure within the main printed circuit board or a loose connection in the internal wiring. This break in communication means the boiler can no longer monitor safety sensors or control the heating process, so it shuts down as a precaution.

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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Your boiler has detected an internal electronic communication failure or a technical error that requires a deep-level diagnosis by a professional.

Technical description

What causes this fault?

Engineer required

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