I am still having problems with my compressor locking out. After my system runs for an extended period of time, the compressor will lockout and the auxillary will kick on. My technician has done the following things: Replaced the CXM board twice, cut JW3 - this was not done originally yielding a low water temp problem, installed a hard start kit on the unit, flushed the ground loops, replaced air filters, installed a toggle switch to disengage the desuperheater during extreme cold, recalibrated the refrigerant pressure temperature settings, check for high low pressure problems - there was none. What in the world is going wrong ? After a few successful hours after the aforementioned interventions the system is still locking out per the descirption above. Is the heat pump an inferior product ? Comfort-Aire by Heat Controller. System specs: 4 ton unit with 4 150ft vertical bore holes for a 2200 square ft house. 1 circulating pump circulating fluid through the loops. PLEASE HELP !