New install no AC, turned on head and it would run for about 4mins and start flashing a steady flash, condenser would not turn on, removed cover off of condenser to check to see if there’s an error code, no led lights were on, all lights were turned off as if there was no power at condenser, pulled disconnect, and checked fuse and all electrical connections making sure all wires are tied in well, put disconnect back in, leds lights came back on, tested both indoor heads and found them to be working normal, checked pressures and delta t, found everything to be normal, cycled units on and off twice, systems operational.