E
Ermintrude
Did he try blowing out the coil with mains
Surely that will blow the mains fuse? 100a through coil?????? Oh water right !
Close all your valves to zones and boiler so only route from loop to drain off is the coil , open filling loop and drain off , open and close drain off to allow pressure to build and remove any bits?? No sawdust or plaster board ore even air in coil??
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