HELLO , I need you help , in my house i have for a long time UPS 1500 kva. but i make a stupid - i connect the air conditioner for a five time. after i see problem in invertore mode function with ackumulator 12v only 5 -7 secudes with loud ,,tv CRT ,,maximal 60w . ackumulator it is change full. in stand by U in = 220v Uout 220 v the barograph see change ackumulator not problem. The cooler air (2 pcs ) make a noise invariabile and U = 12-TO14,5V DC I draw schematic diagram for good understand my problem. i wait your advice steep by steep for rezolve this problem. Best regardes. Ioan- Romania