Since this week my Phantom vision 2+ has a strange rear flight indicator. My rear flight indicator leds are flashing 1x green and 3x red (sometimes also 1x green, 2x red) No orange! And the front flight indicators don't blink. With both the S1 and S2 in the upper position Software 3.0 6 sattelites found, connection looks normal, Wifi OK, I can control my camera etc. When I tried to fly, it said "no connection" at 3 meter distance, but I could still control my Phantom. Does any one now what this means? It's not in the manual.... Big thanks!