BoilerFaultCodesYour boiler is struggling to move heated water to your hot water cylinder, which means you may not have any hot water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Cyl. charging pump
What causes this fault?
This fault occurs when the boiler is unable to detect that water is being successfully moved to heat your hot water cylinder. The most common reason is that the dedicated charging pump has either seized up due to debris or suffered an electrical failure, preventing the transfer of heat. In some cases, a loose wiring connection or a faulty control board means the pump isn't receiving the signal to start.
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 T.04 — 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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