WE PURCHASED 4 AC AROUOND A YEAR BACK. LAST YEAR THEY WERE WORKING VERY WELL. THIS YEAR ONE OF OUR SPLIT AC SG 24 TRD IS NOT WORKING PROPERALY. IF IT IS PLUGGED SOMETIMES IT STARTS ON ITS OWN SOMETIMES IT DOSENT. WE LODGED A COMPLAINT ON 3RD OF MAY, NO 2160, NOTHING HAS BEEN DONE UPTO OUR SATISFACTION TILL DATE. SREVICE CENTRE SENT THEIR SO CALLED (HALF) ENGINEER TWICE. THEY TOLD US THE PROBLEM IS DUE TO WE HAVE 4 AC WORKING ON ONE ELECTRIC...