The SB655 C uses a "common" system for probes. Terminal 1 and terminal 4 must be connected via a jumper wire if using two probes. This is a common installation mistake.
A pre-programmed key does not need to be formatted before downloading parameters. 4. Troubleshooting and Alarm Codes eliwell sb655 c manual
Do you need assistance mapping out a specific or calculating defrost schedules for your system? Share public link The SB655 C uses a "common" system for probes