Potterton Lynx 2

[HSEDoc]

First time on the site reading all the issues relating to the Potterton Lynx 2 seems i have almost all of them. i was losing pressure from heating system which got progressively worse, replaced PRV and this cleared frequency of pressure loss, however still get some. Question how do you fix a flat expansion vessel.

2 most current issue is when running hot water boiler sounds like it is kettling particulary either showering and after short while requires reset. guessing heat exchange is scaled and reducing water flow, if so is there a way to de scale? any other suggestions

 

[kevplumb]

Question how do you fix a flat expansion vessel.

look here

 

[HSEDoc]

Thanks KevPlumb great advise with the expansion Vessel, and there was a piece on descaling to.

Am I right in my understanding that the only way to descale the hot water side of this combie HX unit is by power flush, and if so, then how is done?