Ariston Microgenus 23 MFFI sounds..

[samhhodge]

Hi all,

First time post so sorry for any issues. Just moved into a new flat in London, top floor Victorian conversion. Two bed. Came with a Ariston Microgenus 23 MFFI Combi boiler. Couple of issues we’re having & unfortunately it’s the version without fault lights. Just so you know Hot Water & C.H. do work fine.

I) Consistant low-pressure. Sits just above 0.5 hot water or CH. have tried increasing but when twisting both valves connected to the corded inlet pipe. Nothing. No noise either so assuming it’s not a busted pressure gauge.

II) The boiler lights up every 30 mins to keep the ambient temp up. But when it lights a loud whirring/gurgling sounds is heard. Sounds linked to the timer? And isn’t heard when normally using hot water or CH.

III) General drone/whirring noise when on - less bothered about this. It’s an old boiler and not going to as quiet as newer models.

Any help on the auto-light noise and pressure would be great!! Thanks!
Sam.

 

[Dan Robinson]

What area of Laaaandan is it and what floor are you on?

 

[samhhodge]

Second floor mate and based in Streatham.

 

[Dan Robinson]

Pressure should be OK there. If its a built in filling loop then I would suggest that's shagged.

Test your mains off the washing machine valve then consider getting an external filling loop fitted. Then worry about the other issues if they remain.

 

[algas]

Also if I remember correctly that model runs best with min 1.5 bar pressure, under that and can be temperamental

 

[samhhodge]

Thanks for your replies. It has an external filling loop (see photo) but nothing happens when I turn the blue handles. There’s a flat head screw at the end of the filling pipe set to off, but when turned it leaks.

How do I test the mains off of the washing machine valve?

Thinking it is pressure related...

 

[Dan Robinson]

That classed as an internal filling loop; and as with all of them, was schit.

To test the mains, you need a pressure guage from toolstation or Screwfix. Disconnect the machines hose from the service valve and connect the test guage.

 

[samhhodge]

My bad.. does it just clog up? Will report back.

 

[Dan Robinson]

They clog up, seize up, and if you're lucky leak too.

It is the way of things.