BoilerFaultCodesYour boiler has detected that the exhaust gases are getting too hot, causing it to shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: F07
What causes this fault?
This fault occurs when the boiler's internal components become too hot because heat isn't being transferred away from the burner efficiently. The most common reason is a buildup of limescale or sludge inside the main heat exchanger, which acts like a barrier and causes the metal to overheat. It can also be triggered if the sensor responsible for monitoring these temperatures has failed and is sending incorrect readings to the control board.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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