What does the Ferroli F08 fault code mean?

Your boiler has sensed that parts of the internal system have become too hot, causing it to shut down automatically to prevent damage.

How much does it cost to fix Ferroli error code F08?

Typical repair cost for the Ferroli F08 fault is £120-350 including labour.

Can I fix Ferroli fault code F08 myself?

Check that your radiator valves are open to allow water to circulate.

Ferroli F08 Fault Code: What It Means & How to Fix It

Technical description

Overtemperature protection intervention

What causes this fault?

This fault occurs when the internal temperature of the boiler rises above a safe limit, usually because water isn't moving through the system fast enough to carry heat away. The most common reasons are a failing circulation pump, a build-up of sludge or limescale blocking the heat exchanger, or a 'pocket' of air trapped within the unit.

This fault is frequently seen when the heating is first turned on after autumn, as pump components can seize up during months 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.

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Related fault codes

F10View →F14View →

Your boiler has sensed that parts of the internal system have become too hot, causing it to shut down automatically to prevent damage.

Technical description

What causes this fault?

Engineer required

Related fault codes

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