BoilerFaultCodesTechnical description
Circulation fault (dry fire)
What causes this fault?
This fault occurs when the water inside your boiler heats up too quickly because it isn't being moved away into your radiators or hot water tank. The most common reasons are a pump that has seized up, a build-up of sludge blocking the pipework, or air trapped within the system preventing flow.
This fault is frequently seen in autumn when heating systems are switched back on after being idle all summer, which can cause the internal pump to stick.
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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