Potterton Combi 80 - how to increase the pressure?

simplerisbetter · 5 April 2010 at 10:13PM

Hi all,

The pressure on my Potterton Combi 80 has fallen way bleow the 1 bar and is now in the red zone. I saw from other postings that I need to increase the pressure by opening the blue lever more to let more cold water in. But the blue lever is opened at maximum.

What else can I do?

Also my boiler is leaking whether on or off. It seems to be coming from a pipe with not connection at one end. The pipe is below the control panel on the left side of the boiler.

Should I call in an enginreer?

Thanks for any help.

w50nky · 6 April 2010 at 10:15AM

Are you sure you have found the only valve? It could also have a valve further back in the system, or indeed the valve could be defective. We have a combi boiler and there is a valve on both ends of the fill loop (flexi braided pipe) as well as a non return valve.

There are also valves to isolate water supply too!

I am sure someone will respond further if you are not able to locate your problem on your installation.

simplerisbetter · 6 April 2010 at 12:47PM

w50nky wrote: »

Are you sure you have found the only valve? It could also have a valve further back in the system, or indeed the valve could be defective. We have a combi boiler and there is a valve on both ends of the fill loop (flexi braided pipe) as well as a non return valve.

There are also valves to isolate water supply too!

I am sure someone will respond further if you are not able to locate your problem on your installation.

Most part of the pipe are hidden behind the worktop but they are exposed at location where there is a tap/lever and I hope all taps/levers are exposed for turning. I tried turning some of them but none increases the pressure.

Potterton Combi 80 - how to increase the pressure?

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