Sunsynk F22 fault: Emergency stop fault
Call a qualified installer
Urgency: high
What it means
The inverter has gone into an emergency stop. Something triggered a safety shutdown and the system needs to be checked before it is used again.
Likely causes
- Emergency stop circuit triggered
- Serious internal or wiring fault
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.