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Hi Before I install a Tado extension kit I'm trying to work out if the wiring I currently have confirms to any of the Honeywell Sundial Plans: i.e W or S etc. I just can't match the physical wires to the layout in the HoneyWell wiring guide in that the R6660D seems to go into the wrong...

I have an indirect hot water cylinder, and a gas bolier. The immersion heater coil was replaced some weeks ago and has been fine since, and everything else has been operating fine for 4 years. The central heating circuit is fine but I have no hot water. The boiler fires up fine and all...

After the immersion heater failed, I tested that a current could pass through the elements with the heater in situ, and it could not. I isolated the water flow, drain from the bottom of the hot water cylinder and extracted the element. It was visibly split. I have replaced the element with...