No ac upstairs on the dual head ductless mini split - indoor fans will operate for approx. 2-3 min then shut down and the operation lights on both heads will start to flash continually - outdoor unit LED 1 Red -On, LED 2 Yellow -On, LED Green - Flashing 10 times pauses on 11 and stays lit, then starts the 10 times and pauses on 11 and stays lit - this happens non stop - L1 And L2 has 241 volts - S1 and S2 on both control wires have 241 volts - no information is in the system regarding the flashing on the LED 3 Green - spoke with Mitsubishi and they stated that they have been getting the 10-11 flash code here recently and asked questions like where is the unit, ground level or on the roof - both indoor heads have condensate pumps with no standing water in pumps - homeowner stated that they just turned on the equipment to start cooling - left all information to tech support and waiting a call back - was told that wait time is currently almost an hour and maybe a little short for Diamond