BoilerFaultCodesYour boiler has stopped heating up because the water is not being circulated through the system correctly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Check pump connections. Check water flow. Change pump.
What causes this fault?
This fault occurs when the boiler's internal sensors detect that water isn't moving through the unit quickly enough to safely carry heat away. The most common reasons are a mechanical failure of the pump motor, an electrical connection issue, or a blockage caused by a buildup of debris in the system's pipework.
This issue frequently appears in autumn when heating systems are switched back on after being idle all summer, often because the pump has seized during the months of inactivity.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like PUMP FAULT — no call-out fees, no surprises.
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Ideal Concord CXC 48 116 is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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