Change serial number of HCU 200:
The serial number is written to the RPM card. In order to change the serial number you have to Telnet to the HCU 200 on port 5001
telnet XX.XX.XX.XX 5001 (Enter Twice)
It will now say… YOGI>
Next enter the commands below.
YOGI>cal get info (will show current info)
YOGI>cal set info sn xxxxxxx Displays CAL_Set and changes the S/N
YOGI>cal get info (displays updated info)