U0 CODE ON STATS AGAIN. LOOKED AT ALL THERMISTERS AND FOUND ONE NOT PUSHED ALL THE WAY IN ON THE LINE. ALSO FOUND ONE HEAD TO HAVE A WIRE GOING TO THE WRONG TERMINAL CAUSING THE HEAD TO HAVE POWER BUT NOT FLOW REFRIGERANT. TALKED TO TECH SUPPORT AND THEY SAID THE THERMISTOR IS LOOKING FOR A CERTAIN TEMPERATURE AND IF IT DOESNT SEE THAT IT WILL SHUT DOWN. U0 IS A SYSTEM WIDE CODE SO IT WILL DIAPLAY ON BOTH STATS. BASICALLY THE UNIT WAS TRYING TO SEND REFRIGERANT TO A CIRCUT THAT WASNT IN USE. MONITORED SYSYEM FOR A FEW HOURS WHILE CHECKING OUT ROOFTOP THAT ALSO ISNT WORKING. DUCTLESS SYSTEM WORKING AS IT SHOULD…FINALLY!