Powermax 155x CH not working

Chris168888
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Powermax 155x CH not working Nov 10, 2016 5:08:56 GMT -5

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Post by Chris168888 on Nov 10, 2016 5:08:56 GMT -5

Hi Hoping someone can help

I have a Powermax 155x and when the programmer turns on the central heating the radiators dont heat up.

The pump is a grundfos alpha 2 15-60 130. And when the CH is turned on it just displays '--' on the front of the pump controller and it doesnt pump anything.

From doing some reading I'm wondering if this is a faulty pump or if the programmer isnt providing enough power to the pump?

Hot water works fine.

Any help or suggestions would be greatly appreciated.

Thanks

Chris

C J
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Powermax 155x CH not working Nov 10, 2016 15:47:44 GMT -5

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Post by C J on Nov 10, 2016 15:47:44 GMT -5

It may be seized? Indication (it is very hot?) Try removing the brass screw plug from the end of the pump.. anticlock wise.. Some water will leak out. Insert a wide blade screw driver into the slot on the spindle and turn it. If it starts job done. Be careful if power is on it spins fast!

Chris168888 Guest	Powermax 155x CH not working Nov 11, 2016 4:43:40 GMT -5 Quote Select Post Deselect Post Link to Post Back to Top Post by Chris168888 on Nov 11, 2016 4:43:40 GMT -5 The pump has a digital controller on the front, so no screw to access it. Unless I'm missing something? Its this pump www.grundfos.com/products/find-product/ALPHA2.html?cmpid=ps:google:cb_heating:gb:%252Bgrundfos%2520%252Balpha2

northpole Junior Member Posts: 58	Powermax 155x CH not working Nov 11, 2016 9:03:57 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by northpole on Nov 11, 2016 9:03:57 GMT -5 Would it be worth contacting Grundfos for help with the meaning of the message on the display?

Chris168888
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Powermax 155x CH not working Nov 11, 2016 9:34:25 GMT -5

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Post by Chris168888 on Nov 11, 2016 9:34:25 GMT -5

I've contacted them, nothing back yet. But I have found that either the pump is not receiving power or the 'impurities' need removing.

I checked the contacts and the programmer is sending power to the pump so only thing thats suggested is removing impurities, but I have no idea what that means or how I would do that.

Post by Chris168888 on Nov 10, 2016 5:08:56 GMT -5

Post by C J on Nov 10, 2016 15:47:44 GMT -5

Post by Chris168888 on Nov 11, 2016 4:43:40 GMT -5

Post by northpole on Nov 11, 2016 9:03:57 GMT -5

Post by Chris168888 on Nov 11, 2016 9:34:25 GMT -5

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