Sunsynk F29 fault: Parallel CAN bus fault
Call a qualified installer
Urgency: medium
What it means
In systems with more than one inverter, the inverters lost communication with each other. This needs an installer to check the parallel setup.
Likely causes
- Communication link between parallel inverters lost
- Parallel settings mismatch
Don't try to fix this yourself
When to call a pro
Call a qualified installer now. Switch off heavy loads and don't try to repair anything yourself.
Solar systems carry dangerous voltages. Only do the safe checks listed. If unsure, call a pro.
Source: Deye Hybrid Inverter User Manual SUN-3K…6K-SG04LP1-EU, section 7 “Fault information and processing” (paraphrased)
Sunsynk inverters are built on the Deye platform and use the same F-codes. Check your Sunsynk manual if anything differs.