STATE 452STATE 452
Power Stack Filter Communication Error
Behaviors
The inverter will wait for the defined grid wait period (typically 5 minutes) and automatically attempt to connect again and resume grid power feed operation
Status Code Class 4
Class 4 status codes (state codes that start with a four, i.e., 4xx), typically necessitate intervention by a Fronius-trained service technician.
STATE 452 applies to:
Primo
Galvo
Symo
IG Plus
CL
Solutions for this Error
Remedies
- Power Cycle the Inverter. To do so, both the DC and AC power sources must be disconnected to allow the device to discharge. Once the device has had time to discharge, turn on both the AC and DC power sources to the inverter.
- Run latest firmware update
- If this issue persists, the next steps include inspecting internal inverter components and their cabling by a trained Fronius Service Provider to further diagnose this specific issue. Defective components or the device itself may need to be replaced.
Additional Info
This error may occur unexpectedly due to temporary electromagnetic disturbances, although it is also common when a firmware update is running as the sun sets. Typically, power cycling the inverter will resolve this issue. Ensure that night mode is enabled when updating firmware near nighttime hours. If this error persists after power cycling the inverter and updating the firmware, a Fronius-trained technician may need to replace the PRIMOFIL board.
Get Help with this Error:
The best point of contact is your original installer
If the orginal installer is no longer available, contact a local Fronius Service Provider
DENVER RESIDENTS: Is your system located in the Denver, CO metro area? CONTACT US
