You are assuming the line is shorted.. Just because the controller says it is.
That might (or not) be the case.. Sometimes the controller says a problem exists when it does not.. There are about a hundred reasons (or more) this can happen including power surges. Lightening strikes (can be up to a mile away and still false it) and temporary issues that self-clear.. I have one (Other) device here that occasionally trips a fault sensor.. I bypass. it works. and restore the fault detector and it still works Problem passes. But that could be your problem too so try the reset.. Worst that happens is it does not work.