Sunsynk F41 fault: Parallel system stop
Keep an eye on it
Urgency: medium
What it means
In a parallel system one of the inverters has stopped, so the system shut down to stay balanced.
Likely causes
- One inverter in the parallel system is switched off
- Fault on one of the parallel inverters
What you can safely check
- Check in the app that every inverter in the system is switched on and online.
- If it keeps coming back, stop and call a qualified installer.
When to call a pro
If it doesn't clear on its own, happens often, or comes with burning smells, heat or noise, call a qualified installer.
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.