Customer said the remote will not connect to the crane. The crane will not start if a joystick is not in the neutral position. To see if remote is sending signals to receiver; Press the emergency stop, hold the esc button and turn on remote. If the wireless remote is the static state it should read 7F 7F 7F 7F across the display.
Watch the wireless remote diagnostic video here
K100A contactor will pull in when you start the crane, but the horn will not honk. K101A and K100M contactor will not be pulled in.