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Dan, (and to follow up on snb's question) Thanks for your post. When the CH is on, the blue light on the boiler was on solid. After about half an hour and with the thermal store approaching 60C on the store gauge, the blue light on the boiler started to flash. Which I assume means its...

Thanks for your replies so far. SNB, Appreciate your helpful questions. Here are replies to your questions The ICOS boiler is an HE24 which has min of 9.1KW to 24KW. The thermostat dial on the front is set to maximum. I don't know what the pump speed is from the boiler to the thermal...

Hi Guys, I am kinda needing a bit of direction on what might be wrong with the performance of my thermal store CH and HW system. I would appreciate any advice you can give me. My current system - Ideal Icos boiler feeding a Mcdonald Engineers Thermflow 210 thermal store vented mains...