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Boilermate Ii and Potterton 30

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Post  Jahig Mon Dec 03, 2012 12:04 pm

Looking for some advice thanks.

Returned home Friday to find the house cold and the heating system dead electrically. The 3A fuse had blown which I replaced. The boiler began making some loud banging and the boilermate gurgling loudly. This settled and I assumed all was ok however I have found that the there seems to be a constant call for heat to the boiler which is firing up and then shutting down a minute later indicating it has reached it's desired temp. This cycle is continuous and does her the house but very very slowly. Hot water seems to be fine but can cycle hot/cold. The boilermate green light is on continuously and the tank never seems to get anything more than Luke warm. I suspect it is the pump from looking at previous posts and an engineer from heatteam says the boiler is fine and that its probably the pump (refused to fix it and offered full refund). I'd like to be sure before ordering parts. Can you advise on how to properly test the pumps are working along with the boards. I'm confident enough to tackle the work myself but if anyone knows of a boilermate knowledgable engineer in Glasgow I'd be happy to put the work their way.

James

Jahig

Posts : 2
Join date : 2012-12-03

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Post  mike Mon Dec 03, 2012 1:42 pm

Well when the boiler is heating the boiler pump should be working.
Undo the big screw and put your finger in gently.
Also check with a meter or test leads.
Bm II the clock works the heating via the room stat.
I would turn the clock off and concentrate on the unit and boiler pump first.
Also check the unit is full.
Drain some water out and see / hear if the unit takes water.
If it does NOT then that can be a problem too.
Boiler needs to be on max.
Mike
MGC/H2O
Norfolk

mike

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Location : Norwich

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Post  Jahig Thu Dec 06, 2012 2:06 am

Mike.

The boiler pump seem to be operational. The central heating pump (lower of the two) however doesn't seem to be operational. Is there a safe spot for me to drain the unit from to check that it is refilling? Also can the pumps be isolated for removal rather than having to drain the system an if so from where?

Thanks for your help.

James

Jahig

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Join date : 2012-12-03

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Post  mike Thu Dec 06, 2012 2:02 pm

If c/h pump not working, check it has a supply.
If it has then check if it spin ok.
Not seized.
Drain off at the bottom of your unit.
Pump have a valve above and below ( 1 each side of the pump)
In an ideal world you turn them off remove the pump and fit new one.
BUT the pump valves will most likely leak. If they do it is a drain down new pump valves.
Refill etc adding inhibitor @ 1 litre to every 100 litres to include the unit and system.
Mike

mike

Posts : 1747
Join date : 2009-10-08
Age : 68
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