No central heating

rbennett485 · 6 Oct 2014

I moved into a new place in the summer, and haven't been able to get the central heating going properly since I first tried turning it on a couple of days ago.

I should confess to being pretty clueless on these matters, so I'm adding a picture of the pump setup.

All the radiators are turned on, and the programmer is on a timer so the heating should come on twice a day. At best it comes on lukewarm though and there is no sound from the pump at all so I'm guessing that is the problem.

I've tried the dial on the bottom of the pump, but I can't get that to make any difference. Any thoughts as to how I might be able to get it going/how it might have been turned off?

Cheers

Untitled

rbennett485
6 Oct 2014
1

Untitled

rbennett485
6 Oct 2014
1

Untitled

rbennett485
6 Oct 2014
1

rbennett485 · 6 Oct 2014

I should add that all the pipes around this area are very hot, on both sides of the pump

Hugh Jaleak · 6 Oct 2014

How are you currently getting your hot water heated? Boiler or immersion. (If boiler, are you positive immersion is definitely switched off?) Secondly, what is the room thermostat set to?

stardanny · 6 Oct 2014

Have a towel handy, Unscrew the silver screw in middle of pump, little water will come out, can you see the spindle inside turning. If not turning while heating/ hot water on, pump is knacker.

Daniel.

rbennett485 · 7 Oct 2014

We have a gas boiler downstairs by the programmer, but the pump is upstairs by a water tank with what looks to me like an immersion heater. Does that make sense?

I probably wont try unscrewing that thing just yet, especially as the pump has been fitted with all the electrics at the bottom!

Slugbabydotcom · 8 Oct 2014

A tap with a hammer might get it going again!

Don't hit it so hard you crack the casing or bray it off the pipework though.

Agile · 8 Oct 2014

It really does sound as if the pump is jammed. This can happen if the property is empty for several weeks. The pump body will get too hot to touch in that case after a while.

The FAQ on this site has info on spinning the pump which is likely to be all that is needed to make it work.

When its working you can correct the pump head orientation by closing the two valves ( clockwise ) and then removing all four allen screws and then rotating the heat to put the connections at the top.

Sometimes the pump head will be a little stuck. In that case tap it near the screw repeatedly but not too hard until it comes loose.

Have a bucket underneath in case the pump valves are not fully closing.

Tony

rbennett485 · 8 Oct 2014

I am definitely an idiot... There was a thermostat tucked away that I hadn't come across yet, and that was turned down too low for the pump to come on...

Thank you for all your help though!

Agile · 8 Oct 2014

Still better to rotate the pump head though.

There is a very slight chance you could snap the rotor when freeing the head but it will put the connection block on top where it should be.

It always annoys me when installers don't do the little things to make their work better.

Tony

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No central heating

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