Hi I have a potterton netaheat 6-10 downstairs and hot water cylinder upstairs. The radiators are cold downstairs and only two of three upstairs are hot. I have been told that the pump is not working. Howeve the three way valve has been moved to the both CH and HW position and now all rads are hot. I am stumped at understanding how the pump can be faulty if all rads are hot when 3way valve is moved,can anyone explain. Also I am being advised that both the pump and 3way valve need replacing is this correct? thx if u can help, R
central heating not working
- Thread starter rich66v
- Start date
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get the 3 way valve checked first 
i wouldn't be looking at the pump if its heating all the rads.
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