I think the water is boiling so the pipes bang and the thermal trips cut off the fan. There are two radiator circuits upstairs and downstairs (under the floor in concrete). Has anyone done this or had a similar problem. Nightstor '100' Input Element Rating- 19.2kw (Off-Peak) + 9.6kw (Boost) Output at Full Charge- 22kw Approx Weight- 750kg Width(mm)- 610 Depth(mm)- 596 Height(mm)- 1664 I'm trying to budgeting what needs doing to the house. I think if I turn of the valve next to the pump and open the drain in the boiler compartment and flush from the header tank this may clear the heat exchanger. They paid to have it flushed again and it worked for 11 days then same problem and nothing plumber could do.Īnyway I believe the heat exchanger has been blocked because of the flushing which was exited from a radiator and not the drain in the boiler. Sadly the system was flushed out and after that there was banging from the pipes and it eventually cut out. My parents have had a GEC Nightstor for over 20 years and it has been a good system.
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