Problem with wg20

[Thanos3d]

Hello.i just bought a new house that had installed this gate opener.due to the fact that house was abandoned ,when i pressed the transmiters ,the doors did nothing.i visited the central box and i reset it an try to make the leaves recognition.i left the doors middle-opened and i pressed the P3 button as the door ,first the one and then the second closed...two or three seconds later i heard the click from the rele and waited to open but it stopped.so my P3 lights is slowly flashing ,as the total recognition close- open- close never happened.i did this procedure over 20 times and my door only close but refuse to reopen.my ecds bus led is always flashes 1 blink/sec.
I appreciate your advices cause i cant afford to buy a new one.