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Central Heating Circulating Pump


 
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David1a

from United Kingdom

Joined: 09 Jul 2009
Posts: 3
Location: Nottinghamshire,
United Kingdom

PostPosted: Thu Jul 09, 2009 9:39 am Reply with quote

I have recently noticed that the water circulating pump positioned in the airing cupboad by the hot water storage tank is still running after the boiler has gone off and the timer is off. It can run for over about a hour after the timer is set to go off before itself stopping. Having only just noticed this, should there be a delay in the pump stopping after the timer has stopped and the boiler has stopped or is it a fault with the 3 way switch that controlls hot water, heating? As an addition although the pump is running the radiators are not getting hot.
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namsag

from United Kingdom

Joined: 12 May 2004
Posts: 9909
Location: United Kingdom
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PostPosted: Thu Jul 09, 2009 10:10 am Reply with quote

What boiler do you have, it sounds like it could be a faulty pump over run on it,
if it was microswitch sticking in 3 way valve it would keep boiler firing also
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David1a

from United Kingdom

Joined: 09 Jul 2009
Posts: 3
Location: Nottinghamshire,
United Kingdom

PostPosted: Thu Jul 09, 2009 5:18 pm Reply with quote

It's a Baxi Solo 3 PFL Range. Hope that helps?
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namsag

from United Kingdom

Joined: 12 May 2004
Posts: 9909
Location: United Kingdom
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PostPosted: Thu Jul 09, 2009 5:55 pm Reply with quote

It will very very likely that it will be the pump over run function on the PCB .
Quite an expensive board at around 135 trade so if its not annoying you just ignore it as it wont do any harm or get BG out on fixed price repair they are cheaper than baxi
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David1a

from United Kingdom

Joined: 09 Jul 2009
Posts: 3
Location: Nottinghamshire,
United Kingdom

PostPosted: Thu Jul 09, 2009 6:02 pm Reply with quote

Thanks very much for the prompt replies. I actually have a boiler maintenance/service plan but I wanted to get some advice before making an appointment so I didn't get fobed off with them telling me it wasn't the boiler and wanting to charge me for the repair.
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gas4you

from United Kingdom

Joined: 23 Feb 2007
Posts: 17613
Location: Norfolk,
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PostPosted: Thu Jul 09, 2009 7:43 pm Reply with quote

When it is running for this excess time, check the switched live on the boiler terminal is dead, ie shows 0 volts icon_wink.gif
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