What does the Alpha 0A7 fault code mean?

Your boiler has detected that the exhaust gases are becoming dangerously hot, so it has safely shut itself down to prevent damage.

How much does it cost to fix Alpha error code 0A7?

Typical repair cost for the Alpha 0A7 fault is £150-300 including labour.

Alpha 0A7 Fault Code: What It Means & How to Fix It

Technical description

High flue temperature fault. Check for air in t

What causes this fault?

This fault occurs when the internal heat exchanger isn't transferring heat efficiently to the water, causing the leftover heat to escape into the exhaust flue at dangerous levels. The most common reasons are a buildup of debris and sludge inside the main heat exchanger or a failing sensor that is incorrectly reading the exhaust temperature.

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 that the exhaust gases are becoming dangerously hot, so it has safely shut itself down to prevent damage.

Technical description

What causes this fault?

Engineer required

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