ODU won't run Found open circuts in stat wires from stat to Attic unit and open cir5 in stat wire from Attic unit to ODU Noted ODU Defrost board has been wired out of control scheme, ALSO, after getting the system to operate it is noted the refrigerant charge is shy of fully charged (indicates a leak probably exists) System dates to 2001, duct system is original (1981) and should able be considered for replacement Quoting new system, without ducting