plate heat exchanger

Hi, apologies for the slightly convoluted thread title! I have a fairly old Vokera Linea 24/28 that's been playing up. Previously, it was cutting out intermittently, with an error code 07 (thermistor circuit open) - I could turn it off and on again, and the hot water and heating would start to...

Hoping for some advice. I need to remove the plate heat exchanger on my combi boiler to clean it. I've switched off the power to the boiler, closed off the valves and drained it using a hose and checked the pressure is on 0. However, when I start unscrewing the screws that hold it in place I am...

Looking to open up a discussion - purely to learn / discover something new. The point of this thread is to explore the topic. When a Plate Heat Exchanger (PHEx) is blocked - one obvious option is to clean out the unit (spirit of salts etc) & then refit. What are members thoughts about...

Hi All, can i take your advice on something please? I have a Main Combi Eco 30 and it seems like my plate heat exchanger is clogged up (from researching symptoms). I've bought a replacement online and want to have a go at replacing myself, so I know for future reference too for cleaning/...

My boiler is 11 years old (the system was power flushed then). Just recently the hot water started to cut out. I contacted Vaillant who offered a £300 fixed repair contract. I have had two visits. On the second visit the diverter valve and plate heat exchanger were replaced. The first visit the...

Hi All, I've been studying this and other forums for months off and on and putting all the ideas into a do it all system. I am posting my plans for fitting a heat bank to a combi boiler using a converted 300L unvented cylinder for comments / suggestions and probably ridicule. First a bit of...