My Potterton Promax 28 HE Plus boiler started leaking and pressure dropping recently. I stupidly did an online repair with a certain well known company (BG), engineer came out and noticed water pooling on the metal shelf that sits the exapnsion vessel and a big metal thing with black gaskets he said the hose was split he replaced this and went away. The boiler was still leaking. 2nd engineer came out said I suspect your expansion vessel is burst, he replaced this as the EV was full of water, but could not see a leak, boiler was still leaking. 3rd engineer came out "oh the new hose that was fitted was fitted the wrong way"!!!!, boiler was still leaking, 4th engineer came out oh I dont see a leak, your pressure is not dropping so I would not worry about a leak!!!, i said but its a sealed system. Boiler was still leaking and pressure started dipping again.
I turned off the boiler and electric cooker switch next to it and opened the front cover, all I did was have a look nothing more, water was pooling at the top shelf where the expansion vessel sits and noticed water leaking from the top black gasket with a metal clip (see images), water appears to be coming out the little space that the metal clip inserts into. I left the boiler switched off and drained it down. thankfully have an electric shower and use the kettle for hot water for dishes.. I dont understand how a BG engineer never noticed this, but I noticed it within 10 seconds of looking around it.
If this an expensive job to get replaced/repaired, the boiler is 10 years old. When the boiler was running the radiators would produce amazing heat and the hot water is excellent.
I turned off the boiler and electric cooker switch next to it and opened the front cover, all I did was have a look nothing more, water was pooling at the top shelf where the expansion vessel sits and noticed water leaking from the top black gasket with a metal clip (see images), water appears to be coming out the little space that the metal clip inserts into. I left the boiler switched off and drained it down. thankfully have an electric shower and use the kettle for hot water for dishes.. I dont understand how a BG engineer never noticed this, but I noticed it within 10 seconds of looking around it.
If this an expensive job to get replaced/repaired, the boiler is 10 years old. When the boiler was running the radiators would produce amazing heat and the hot water is excellent.
