Delay removing heat after all valves close

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I've got a recent Baxi condensing boiler connected with Opentherm via the wireless remote kit that supports Opentherm.
When any of the radiator valves call for heat the boiler is switched on almost immediately, however after the last valve closes the demand for heat can remain for over 10mins with the pressure bypass valve open before Tado eventually turns the boiler off. How long does it usually take to shut the boiler down after all the radiator valves have closed?
Thanks

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  • johnnyp78
    johnnyp78 ✭✭✭
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    Are you sure it’s not just the boiler pump running? Ten minutes seems like a fairly long time though. I would always leave one radiator without a valve just in case.
  • hugbilly
    hugbilly ✭✭✭
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    Yes, agreed @johnnyp78, that sounds like pump overrun . . .