Sigenergy
5101
Software Version Mismatch
Equipment's internal software version does not match. ID1=Software mismatch, ID2=Software/hardware mismatch, ID3=Protocol version mismatch.
Common causes
Incomplete or failed firmware upgrade
What to check
STEP 1
Upgrade again via mySigen App
Escalate if
Upgrade fails multiple times — submit fault report via mySigen App > Support > Troubleshooting
Need full interactive diagnosis?
Faultpath walks you through decision trees, fault codes, and commissioning — built for solar & battery engineers.
Open Faultpath
More Sigenergy fault codes