D.72 Low
Your boiler is continuing to run the pump for a short period to move heat away from the system after it has finished heating your water.
Technical description: Pump overrun time after warm start
Typical repair cost: £0-80 (including labour)
DIY fix possible
Check that your radiator valves are open to allow water to circulateMonitor the boiler for a few minutes as this is often a normal operational status rather than a faultEnsure there is no air trapped in the system by bleeding a radiator
Protect yourself from future repair bills
A boiler cover plan would cover faults like D.72 — no call-out fees, no surprises.
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