What does the Ideal Overheat fault code mean?

Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.

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

Typical repair cost for the Ideal Overheat fault is £90-220 including labour.

Can I fix Ideal fault code Overheat myself?

Check that your radiator valves are open to allow water to flow

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

Technical description

Overheat thermostat fault detected by diagnostic feature.

What causes this fault?

This fault occurs when the water inside the boiler exceeds a safe temperature limit, triggering a safety sensor to cut the power. The most common reasons are a failed pump that isn't moving water away fast enough or a blockage in the heat exchanger that traps heat. Sometimes, it can also be caused by a build-up of air or sludge in the system restricting flow.

This fault is more common when the heating is first turned on after summer, as pump components can seize up during long periods of inactivity.

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.

Find a Gas Safe engineer

Search the official register →

Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.

Technical description

What causes this fault?

Engineer required

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