Another strange fault to solve , replaced an old panel with new Morley dx 1 loop panel, all new devices on loop working perfect after installing new Apollo devices on system. Bell loop 1 reading 6.8 k ohm on multimeter as supposed to , when I put connector into panel it shows up short circuit fault on this sounder loop, I think it maybe some of the pyro in the circuit breaking down and when the current flow from panel causes a short. Has anyone ever came across this problem .
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