Proteco Advantage (Q60A) Error Code "03"

[CLAUDIOTX]

Hello there.
I have a problem with my Proteco automation system.

My panel of the Q60A displays: "--" (standby)

When I try to open de gate (remote control button), the panel displays: "03", and nothing happens, and the error remains there till a reset is made.

I have shorted 3-9 and 4-9 for bypassing cells.

Please let me know what this error code "03" means.

I've disconnected and reconnected most of the wires and still nothing.

Thanks in advance.