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Fronius Symo 7kW Inverter LITE 22.7-3 22 Advanced

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Input Voltage DC720 V
Output Voltage AC480
Solar panel compatibility60/72 - 120/144 cell
  • Grid-Tie Inverters
Rated Efficiency98 %
Dimensions LxWxH8.9" x 20.1" x 28.5"
Weight95.7 lbs
ManufacturerFronius USA LLC
Manufacturer Part #LITE22.7-322
Operating Temperatures -40 F to 140 F
Warranty10 Years Manufacturer
Delivery Time 5-7 business days

About product

Fronius Symo 7kW Inverter LITE 22.7-3 22 is a three-phase string solar inverter for residential and commercial PV systems of different sizes. It is a complex solution, as a dual MPPT is already integrated in the inverter. The SnapINverter hinge mounting system and easy commissioning app, which allow installing the Fronius Symo 7kW Inverter in no more than fifteen minutes. Among its features are Wi-Fi and SunSpec Modbus interfaces, which enable seamless monitoring.


The Fronius SnapINverter generation features a hinged mounting system allowing for easier and quicker installation. There are two main parts: the power stage and the lightweight connection compartment. First, mount the connection compartment and all wiring to the wall. Second, snap the power stage in. The inverter is ready to be used! If servicing is needed, just take the power stage and leave all wires in place.


Every solar system requires monitoring. Fronius Symo 7kW Inverter offers integrated data communication capabilities and free online monitoring with the help of Fronius Solar.web. You can use Modbus TCP SunSpec, Modbus RTU SunSpec or Fronius Solar API (JSON) interface for seamless data communication.


Fronius Symo 7kW Inverter is equipped to meet the technical requirements of a smart grid of the future. It comprises a range of control functions for dynamic feed-in of both effective and reactive power. The functions enable a stable grid and highest solar density, as well as prevent unwanted system shutdowns when grid parameters exceed their thresholds.


Due to the integrated Fronius Arc Fault Circuit Interruption (AFCI), Fronius Symo 7kW Inverter is NEC 2014 and NEC 2017 690.12(B)(1) compliant and offers a best-in-class solution for detecting arcs. What the AFCI does is shuts down the inverter in the event of an arc fault within the solar system.


There is one or more fans, which regulate the air circulation inside the inverter and keep the temperature low. It prolongs the lifespan life of the inverter, optimises yields and reduces costs.

Number of MPPT: 2

Recommended PV Power (kWp): 18.0 - 29.5 kWp

Nominal input voltage: 720 V

Max. efficiency: 98%

Dimensions: 8.9" x 20.1" x 28.5"

Weight: 95.7 lbs

Reviews & Questions

  • Reviews (3)
  • Questions (3)
Great inverter, but software could be better. Spent many hours trying to set up the app to get it working only to have it go offline. Not very intuitive setup. Works 70% of the time and then just goes offline. Then all of a sudden it will connect again.
08/02/2021 02:31 pm
We have this wonderful piece of hardware hooked up to our 10 kW Solar system. Solid, responsive, easy to connect and monitor, what else to say. Happy with the purchase.
Jenny and Greg
07/27/2021 09:41 am
Upgraded our old 1.5kw setup to a 6.6kw solar system with a Fronius Symo inverter. So far, so good. I love being able to monitor the stats in realtime through the app.
Dave S.
07/12/2021 05:50 pm

Leave a review

Can it be mounted on the roof next to the solar array?
Cole Egan
08/03/2021, 17:32
Mounting inverters right next to the array on a rooftop is a popular approach with commercial PV systems. You can mount the Fronius Symo Advanced inverter completely flat on the roof. No extra mounting racks are needed.
Where is it produced?
Lela Fisher
07/19/2021, 15:54
All Fronius inverters are designed and manufactured in Europe. Fronius is an Austrian photovoltaics and battery charging company founded in 1945.
Are Fronius inverters noisy?
07/06/2021, 08:52
Fronius Primo and Symo inverters can cause noise up to 65 dB when working their hardest. It is slightly louder than the sound of normal conversation.