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Top 5 Fronius installers in the United States, Rocklin Solar Repair brings unmatched diagnostic precision to your doorstep. We are fully licensed (Class B & C-46 Solar #1050566), factory-trained, and dedicated strictly to honest diagnostics, professional repairs, and flawless installations.
Fronius builds some of the most reliable string inverters in the solar industry, but getting expert service shouldn't be a hassle. Whether your original installer went out of business or your system has suddenly stopped producing power, you need a specialist who knows Fronius hardware inside and out.





Is your Fronius inverter showing a solid red light or flashing an error code like State 301, 415, or 509? We pinpoint circuit, grid, or hardware faults accurately on the first visit.
If your older IG or Snap Inverter model has reached the end of its lifespan, we handle seamless upgrades to the latest Fronius Primo or hybrid GEN24 systems.
Reconnect your inverter to your local home network, configure Fronius Solar.web, and ensure real-time tracking of your daily kilowatt-hour production.
Full DC/AC string testing, thermal imaging, and isolation resistance testing to protect your inverter from external array faults.
Fronius State Code 301 / 302 (Overcurrent)
Fronius State Code 415 / 475 (Communication & Isolation Faults)
Fronius State Code 509 / 517 (No Grid Feed-In / Hardware Error)
Fronius IG
Fronius IG Plus
Fronius Primo
Fronius Symo
Fronius Gen 24

Based in Rocklin, CA, we provide on-site Fronius inverter diagnostics and installation across:
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6518 Lonetree Blvd #2050 Rocklin, CA 95765