BoilerFaultCodesTechnical description
Poor circulation
What causes this fault?
This fault occurs when the water inside your boiler gets too hot too quickly because it isn't being pushed around your radiators fast enough. The most common reasons are a pump that has seized up or a build-up of sludge and debris that is physically blocking the pipework. Because the heat has nowhere to go, the boiler forces a shutdown to protect its internal components from heat damage.
This issue often surfaces in autumn when the heating is turned back on for the first time, as internal pump parts can seize up after sitting idle during the summer months.
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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