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Hi all Our greenstar 28i is warming up then cold and takes ages to warm up again just to go cold again. If you run shower or taps on really low flow then maybe it’ll keep hot… We had this problem last year. I was going to change the heat exchanger plate.. I flushed the system first with cleaner...

Hi all, two questions really.. I know theres lots of chat about which way drainage should go, but I'd really love it if someone with more experience than I could have a look over this and tell me what to do. we have a small terrace house garden, which after digging out about 16 tons of raised...