BoilerFaultCodesYour boiler has stopped working because the internal pump that moves water around your heating system has failed or cannot communicate with the control board.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Pump Fault: Check pump wiring, if OK replace pump
What causes this fault?
This fault occurs when the boiler's control board detects that the internal pump is either completely unresponsive or failing to reach the required speed to move water. The most common reasons are electrical failure within the pump motor itself or the pump becoming physically seized after long periods of inactivity.
This fault is particularly common in autumn when the heating is turned back on for the first time, as the pump can seize up after sitting idle throughout the summer.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like F13 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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