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Earth-ft Earth fault happens Contact Sungrow service dept. 1 Selecting Installation Location Selecting an optimal installation location for the inverter is decisive for its operating safety as well as it expected efficiency and service life. If the original packaging is not accessible, an equivalent carbon which is able to support the unit weight and size can be used. Press ► to move right and press ▼ to input the password 1111. 1 AC Side Requirements Only after receiving prior approval from the local grid company as required, should you connect the inverter to the grid. Wait for DC voltage to return to the operating voltage. Press ► to move cursor to the right and press button ▼ to set password 1111. Press ▼ to navigate arrow-pointer to “His-inform” and press ENTER. Press ▼ to navigate arrow-pointer to “Fault-record” and then press ENTER. The following precautions should be observed when working on batteries: − Remove watches, rings, or other metal objects. Improper operation during the wiring process can cause fatal injury to the operator or unrecoverable inverter damage. Please contact our company or distributors to get the latest version. 23 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Mark positions Drill holes In order to avoid electrical shock or other injury, inspect existing electronic or plumbing installations before drilling holes. Do not release the equipment unless it has been secured to the wall firmly. If the fault still exists, contact Sungrow service dept Bus-low The Bus voltage is too low. Plug the threaded sleeve into the front connector. Fig 6-4 One Inverter Connected to PC or SolarInfo Logger 37 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Fig 6-5 Multiple Inverters Communication with Other Devices 7. Terminals not used underneath the inverter are sealed. 1 2 Read this manual, especially the section on “safety instruction” Chapter 1 3 Store the inverter unit if not installed immediately Section 4. Where there are multiple inverters in the PV power system, connect “PE” cables of all inverters and mounting frame of PV arrays to the same copper bus bar