Pump gone

[Notadecor8ter]

Hi,

Like idiots buying convertible motors in summer my heating has decided to seasonally pack up!

Saga is the fan went, my good friend who is a GS Engineer came round and sorted that.

I've fitted a Hive in between this, which i'm still working out why the HW won't come on (i'm on a S Way system)

Yesterday i woke up with a massive clunking, sounded like someone was in the loft! Boiler was calling to heat...occasionally coming on but then stalling back to flashing Green (call to heat?). I took the pump screw out and turned it around, this worked yesterday. Got to last night and same again, turned off, looked at the screw and it felt far loose this morning.

Is this the Pump? Would my issues with hive wiring add any preasure onto the pump burning it out?

Can a pump be installed DIY? I really do need heating (and blood preassure down).

Thanks

 

[Madrab]

If the pump isn't turning when the system is calling for heat and you are getting 240V to the pump then yup, it's fooked. Isolate valves top and bottom and replace the pump head or complete unit.

why not get your GSR pal to come round and test it and if it's knackered then sort it out/help you out with it? Not a big job if the valves close ok.

 

[Notadecor8ter]

Yeh gona be replacing it later...

Fingers crossed.

 

[Notadecor8ter]

Being naive and skint, I spun the thing again and a bit more, now working fully again.

Also, spoke to my sparks friend (fully positive spark) and he gave me rewire instructions for the pump, i'd got CH ON and HW on the wrong way on the Hive.

Really not sure if this has cleared air out of the system that had built up due to no HW running through relevant sections?

 

[JohnD]

if you're really skint, you can often pick up used pumps for their scrap value on Freegle or Fleabay. You're taking a risk, but if you get a Grundfos that looks fairly new, it may be worth a punt. It happens when people install a combi or system boiler, and no longer require the old pump.

Look at the numbers on your old one, they specify the width between fittings (so it fit straight in to replace your old) and the throughput. I'd avoid the Alpha or self-varying ones as they seem more troublesome than the simpler pumps. Measure the old and new pumps before buying and test your pump valves, they may be seized or leak.

I am a DIYer not a heating engineer.

 

[Notadecor8ter]

I have seen they do a wilo replacement one https://www.screwfix.com/p/wilo-ssrs2501-replacement-central-heating-pump-230v/5082v

Are these basically just reconditioned ones?

 

[JohnD]

budget brand.

 

[Hot&Cold]

Dont know how old or how well your pump is installed but The pump capacitor could have gone tech.Could be a result of your tinkering with the heating system electrics-who knows,

 

[Notadecor8ter]

Its inconsistent. When i'm calling heat on HW the pump dosn't seem to come on (can't hear it like CH).

Odd clunk here and there and then it works ok.

I do not want this going over xmas so I might buy a new pump and not hope this problem goes away.

What you think?