Boiler pump running constantly

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Boiler pump running constantly

Post  S Dexter on Fri Sep 14, 2012 11:29 am

My boiler pump is running constantly (and boiler LED is on constantly).

However the boiler has been wired into the non-switched supply for some reason.

What temperature is the switched supply and boiler pump supposed to turn off, I assume it was what is shown on the menu, i.e. on @ 65degc and off @ 68degC, however I set my boiler to max and neither LED turned off and the ST temperature was over 72degc.....

Maybe the board is faulty and does not thermostatically switch, or is the switch on/switch off temperature different to that which is displayed on the ACB?

Any help would be appreciated...

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Re: Boiler pump running constantly

Post  mike on Sat Sep 15, 2012 12:57 pm

Sort the wiring out first.
Mike
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Norfolk

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Re: Boiler pump running constantly

Post  S Dexter on Mon Sep 17, 2012 6:45 am

mike wrote:Sort the wiring out first.
Mike
MGC/H2O
Norfolk

Will that help it though mike if it is not switching? Will the boiler just trip on overtemp....?

Cheers

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Re: Boiler pump running constantly

Post  mike on Mon Sep 17, 2012 2:40 pm

Check the store sensor.
If in doubt use a temperature probe/ tester.
And sort the wiring out
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Boiler Pump Constantly

Post  chriscollard on Thu Sep 20, 2012 3:08 am

Hi. New to this. Just bought a house with a boiler mate 2000. Boiler circulation pump running contantly. Other two pumps cut in on demand but boiler pump on all the time. Been reading the posts. How do I alter the temperature of the water as, when the pump is rumming, it is on it is red hot. What temp should the stored water be?

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Re: Boiler pump running constantly

Post  scorp on Thu Sep 20, 2012 10:00 am

Sorry if I'm wrong but could this issue be because level of water in the tank is low? This is just out of interest question.

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Boiler Pump

Post  chriscollard on Thu Sep 20, 2012 12:11 pm

I will definately look into it. Thanks. This is a completley new system to me so I don't even know how to tell how much water is in the tank?

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Re: Boiler pump running constantly

Post  mike on Thu Sep 20, 2012 12:50 pm

Try to read / study the book.
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Re: Boiler pump running constantly

Post  S Dexter on Thu Sep 20, 2012 1:23 pm

Cheers for that, the store temp sensor mirrors the readout on the boiler (viessman) - 72degC and rising , but the lights and pump never switch off. I will try it in the switched live but I am assuming it will just trip on overtemp.....

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Re: Boiler pump running constantly

Post  mike on Thu Sep 20, 2012 1:29 pm

Checked the fault codes?

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Re: Boiler pump running constantly

Post  S Dexter on Tue Oct 09, 2012 3:46 am

mike wrote:Sort the wiring out first.
Mike
MGC/H2O
Norfolk

Mike, cheers for that, the bit of information I was missing is that the boilermate re-commisions itself the first time, after sorting the wiring and doing a power cycle it is functioning correctly now.

I don't know whether switching the main supply on and off will have detrimental effect to my boilers reliability... it has a 240v switch input to turn the actual boiler on and off, whilst leaving the control circuits powered separately.

Thanks for your help...


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Re: Boiler pump running constantly

Post  mike on Tue Oct 09, 2012 11:34 am

Sometimes switching off for 30 seconds and then back on can reboot it.
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