Hello, I have a problem with multi system unit, the out door unit is model aoy30lmaw4 and there are 3 indoor units models asy9lmacw. At all indoor units the green light fleshing consistently and the red light 5 times, after run test the red light fleshing consistently and the green light twice. At the out door unit all the fuses are fine and the leds are off. There is about 170V between legs 1 and leg 3, there is about 70V between legs 2 and leg 3, at all units. As far as I understood the problem is "serial reverse communication error". What can cause the problem?
