XP DEUS II with 13" x 11" (34x28cm) FMF Coil, and Remote Control

Some problems with my DEUS II

I did read instructions and first tried to charge the Coil with the clamp and charger supplied and the Coíl began flashing 4 seconds on and 4 seconds off like if it where already charged, I took off charging clamp and Coíl began to flash every 30 seconds, I tried to pair the Coíl with the RC and couldnt , I did NOT know what to do ,I tried to charge the Coíl and pair it with Rc and after 3 days suddenly Coíl began to charge , and after that I finaly,pair it with RC,the first time I took the detector to field suddenly coil unpair the RC after several attempts finaly It pair again, so I think there is a false contact inside coil.