SOLAX POWER X1 Single Phase Inverter Air Installation Guide

October 27, 2023
SOLAX POWER

SOLAX POWER X1 Single Phase Inverter Air

X1 Series 2.5KW-3.3KW

Packing Lists

Inverter Installation

  1. Unscrew the bracket from the back of the inverter.
    And mark the position(210mm×25mm) of three holes

  2. Drill holes with φ10 drill.
    Depth: at least 50mm

  3. Tighten the expansion tubes

  4. Screw the expansion screws

  5. Match the inverter with the bracket.
    Screw the cross recessed screw on the right side.

PV Connection

AC Connection

  1. Slide the cable nut and back shell onto the cable.

  2. Insert the tripped end of each three wires into holes in the female insert, then tighten each screw with L-type wrench

  3. Screw down the threaded sleeve of the pressure screw.

  4. Screw down the pressure screw.

  5. Connect the AC plug to the inverter, and screw down the pressure screw on the top part of AC terminal.

Connections and Overview
  • Screw the ground screw with Φ4 hexagon wrench shown as follow.

  • Prepare the connector and the communication cable, following the PIN definition and assembly order below, then insert the cable into the corresponding 485 port of the inverter, and tighten the waterproof connector.

  • Overview for connection.

  • After checking all connections are correct, turn on the external DC /AC breakers

  • Turn on the DC switch to the “ON” position.

  • Inverter will start automatically when PV panels generate enough energy. The LED will be blue and the LCD screen will display the main interface

Firmware Upgrading

1) Make sure the DC switch is off and the AC is disconnected with grid. Unscrew the waterproof lid of Upgrade port by straight screwdriver as the picture shows.


Please contact Solax service to get the latest firmware. Then add a new folder named “Update” in the root directory on your U-disk, and two more sub- folders named
“ARM” and “DSP” under “Update”. Please copy the firmware files into ARM and DSP respectively.
It will be like: update\ARM\618.00207.00_X1_BOOST3.0_MINI2.0_AIR2.0_ARM_V1.10_20190828.usb; “update\DSP\618.00205.00_X1_BOOST3.0_MINI2.0_AIR2.0_DSP_V1.09_20190613.usb Press and hold the “Enter” key for 5 seconds to enter Off Mode. Then unscrew the waterproof lid and insert the U-disk into the “upgrade” port.

  • For the inverter with LCD, user can refer to the following:
  1. When the user turns on all the switches, the LCD will show pictures as below.
    And at the same time, the user can choose the program you need by pressing short Up and Down , and long press “V” to confirm and upgrade the inverter.

  1. If the upgrade fails, please do not turn off the DC switch or disconnect the PV connector, just re-plug the USB again and continue to upgrade.
  • Please contact our service support to get the update package, and extract it into your U-disk.
    Do not modify the program file name ! Or it may cause the inverter not work anymore

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