Potterton Performa 18e-No Pressure,noisy and no HW or CH

[jamiem]

We have the Potterton Performa 18e boiler which is in the kitchen. Over the past week it has been making a loud moaning noise and there is now no hot water and the radiators are only mildly warm.

I noticed when i opened the front fascia that the pressure gauge reads zero. After reading around on this forum i thought it might need re-pressurising with a filler loop. There was no filler loop on the boiler so i purchased one.

I thought this would need attaching between the two outer pipes beneath the boiler (see pic). However, when i turned the two black taps to the off position (see pic) and undid the cap on the left hand pipe, water started pouring out and did not stop.

I looked in the loft and there are two tanks up there. A large round tank and a smaller rectangular tank with a ball valve. Not sure if these feed the boiler or what. We also have a hot water tank in the airing cupboard.

Any ideas on what to do will be gratefully received.

Thanks,

Jamie

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• jamiem
• 22 Feb 2013
• 1

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• jamiem
• 22 Feb 2013
• 1

 

[45yearsagasman]

Deleted after reading post again.
Very confusing mentioning the small tank in the loft, suggesting an open vented system. Those boilers are for sealed systems only.
Look for a fill loop (poss in the airing cupboard) and refill the system. Turn those valves back on again and tighten those nuts. View media item 35799

 

[jamiem]

Thanks for the reply Pete. I looked in the airing cupboard but could not see a filler loop. I only saw what was in the pic below.

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• jamiem
• 22 Feb 2013
• 1

 

[45yearsagasman]

It is possible that your boiler is fitted to a vented system, although it should definately not be. Have a good look around for the fill loop, it may be hidden in a cupboard near the boiler, maybe.

 

[jamiem]

I checked in all kitchen cupboards and could not see a fill loop

 

[45yearsagasman]

Is the small tank in the loft connected to the system and does it contain water?

 

[jamiem]

Yes its full of water and I've depressed the ball valve and it does fill.

 

[45yearsagasman]

but is it connected to the system pipework. If the answer is yes, then I'm afraid it's wrong. As I said before, these boilers are for sealed systems only, and you need to get someone in.