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Hello Guys, I desperately need your advice. :( I have a Biasi 24S. 2 months ago it sprung a leak and stopped working entirely. I called a plumber out to look at it. He replaced the ignition PCB unit. All was ok C/h and d/h/w all working. 2 weeks later it leaked again. This time I searched...

Hello there Temperate control for Central heating is working correctly but the hot water temperature keeps fluctuating and won't remain constant. It just gets hotter and hotter. The temperature knob for hot water doesn't seem to be doing anything. I only seem to get constant temp hot water...