Dear friends
Could anyone give the password for recovering serial number of (YORK YCIV100 ) chiller, the following messege is shown on the display ( UNIT WARNING:INVALID SERIAL NUMBER, ENTER UNIT SERIAL NUMBER), according to the manual this messege means that the chiller has lost some important information from the software and it requires the help of Johnson Controls technical support to send a password , I tried many times to contact them but they made no answer, So i need your help please , i am ready to pay for that, and thanks in advance.

Khaled Husain