The component shown is an original LCD Display & Communication Board used in Sunways AT3600 photovoltaic inverters from the AT series.

This module acts as the inverter’s Human Machine Interface (HMI) and allows real-time visualization of operating parameters, inverter status, production data, and fault codes of the photovoltaic system.

The board integrates:

• Graphic LCD display
• Embedded management microprocessor
• Flash memory
• Communication circuitry
• Ethernet/LAN interface
• Expansion/service slot
• Front keypad and control management

It is responsible for communication between the user and the inverter, enabling local monitoring, diagnostics, and system configuration.

⚙️ Main Functions

• Display of inverter operating data
• Menu navigation and configuration management
• Photovoltaic production monitoring
• Alarm and fault code indication
• Communication with the main logic board
• LAN/Ethernet interface for remote monitoring
• Firmware update management

🔌 Role Inside the Inverter

Inside the Sunways AT3600 system, the module functions as:

• HMI (Human Machine Interface) panel
• Local operator interface
• Diagnostic and monitoring unit
• Communication interface module

The display allows monitoring of:

• DC voltage
• AC output power
• Produced energy
• Grid status
• MPPT status
• Alarms and inverter faults

🔧 Visible Technical Features

• Monochrome graphic LCD display
• Flat cable connection between LCD and PCB
• Freescale ColdFire microprocessor
• Samsung memory + AMD Flash memory
• Integrated RJ45 Ethernet port
• SD/Card expansion interface
• Flex connectors for inverter interface
• Integrated switching power supply
• Industrial multilayer PCB
• SMD communication and control circuitry

🛠 Applications

• Replacement of faulty inverter display
• Repair of inverter user interface systems
• Restoration of inverter communication functions
• Recovery of operational data visualization
• Maintenance of Sunways AT series inverters

⚠️ Typical Faults & Symptoms

A defective module may cause:

• Display completely off or unreadable
• White or frozen screen
• Loss of communication with inverter
• Non-functioning buttons or menus
• Startup freeze or boot issues
• LAN/Ethernet communication failure
• Firmware or boot errors

🚨 Common Error Codes Associated

Possible faults related to this module include:

• Communication Error
• Display Init Error
• Control Panel Fault
• Internal Bus Error
• Firmware Error
• HMI Communication Fault
• EEPROM / Memory Error
• LAN Communication Error

(Error naming may vary depending on Sunways firmware version.)

📋 Product Specifications

• Manufacturer: Sunways AG
• Compatibility: Sunways AT3600
• Module Type: LCD Display & Communication Board
• Display Technology: Monochrome graphic LCD
• Communication: LAN / internal inverter bus
• Application: Grid-tie photovoltaic inverter

📌 Summary

The Sunways AT3600 LCD Display & Communication Board is the inverter’s central user interface module, responsible for:

✔ Displaying operational and production data
✔ Managing inverter configuration and diagnostics
✔ Handling communication with internal inverter electronics
✔ Providing local and remote monitoring functionality

👉 An essential component for proper inverter supervision, diagnostics, and user interaction in Sunways photovoltaic systems.