LONGi Manuals & User Guides

LONGi Green Energy Technology Co., Ltd., widely known as LONGi, is a global leader in solar technology and the manufacturing of monocrystalline silicon products. Founded in 2000, the company drives the renewable energy transition through high-efficiency solutions, including wafers, cells, and its renowned Hi-MO series of solar modules. LONGi is dedicated to technological innovation ensuring optimal energy yields and reliability for diverse applications ranging from distributed residential rooftops to large-scale power plants.

The company’s product portfolio includes the Hi-MO 6 and various bifacial solar modules designed to maximize power generation even in challenging environmental conditions. LONGi stresses quality and safety, adhering to international standards for mechanical and electrical installation. Through its lifecycle quality approach, LONGi supports global zero-carbon development and provides accessible green energy solutions.

• Where can I find the serial number on a LONGi module?

  The unique serial number is laminated permanently inside the module (visible from the front) and is also located on a label beside the module nameplate.

• What is the warranty start date for LONGi solar modules?

  The warranty start date is defined as the date of delivery to the initial customer or 6 months after the modules are shipped from the production plant, whichever is earlier.

• Can LONGi bifacial modules generate power from the back?

  Yes, bifacial modules are designed to generate power from both the front and rear surfaces by utilizing reflected and diffused light, significantly increasing overall energy yield.

• How should LONGi solar modules be cleaned?

  Modules should be cleaned regularly according to the manual instructions. avoid using harsh chemicals or abrasive materials. Do not attempt to clean modules if the glass or sealing materials are damaged unless wearing appropriate PPE.

• What should I do if a module is damaged?

  If a module's glass or sealing materials are damaged, wear Personal Protective Equipment (PPE) to isolate the module from the circuit and contact LONGi customer service for further assistance. Do not repair problematic modules on your own.