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The plumbing system is oil fired and has its own pump. This pump is located off a boiler located behind an open fire. There is a thermostat linked to one of the pipes from this boiler controlling the pump. Sorry, it is an expansion valve, starts clicking once the boiler gets warm. The...

I have a grundfos pump which is hot to the touch even though it has not been used all summer i.e. no central heating has been used for a couple of weeks. The power switch is on and is supplying power to the pump. I have turned this switch off for safety. I have not tested it yet, but there had...