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  1. C

    Is a Safety Relief Valve Needed?

    Re: Rads getting hot when boiler firing for DHW. It is not normal for this to happen. If it does it usually means that the return for the upstairs rads is stabbed in to the return to the boiler in the wrong place( usually to close to return from cylinder). It could also be a bypass...
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    circ pump - can i change it myself?

    Just because the pump is not turning does not mean that it's not working. You have to establish whether there is a call for heat. Turn up room stat or cylinder stat(don't forget to turn back down) and use a multimeter to detect 240 v to pump. If you have a demand for heat and 240 v, then the...
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    potterton prima f 40 boiler

    I had one of these these yesterday. Very unlikely pcb. It is good practice to always change hoses when you replace APS. If it is the pcb the burner will die before APS clicks off.
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