Original REFU Elektronik BF29724B Display Control Board featuring an integrated graphic LCD display, designed as the operator interface module for REFUsol photovoltaic inverters.
This electronic assembly is responsible for displaying inverter operating data, providing access to configuration menus, and supporting system diagnostics. Through the LCD display, users can monitor key operating parameters such as power output, energy production, inverter status, alarms, and system events.
The module integrates control electronics, a dedicated microcontroller, display interface circuitry, and communication connectors for connection to the inverter's main control board.
Ideal as a replacement part for repairing REFUsol inverters experiencing display, communication, or user interface issues.
⚙️ Main Functions
✔ Photovoltaic production data display
✔ Inverter status monitoring
✔ Alarm and fault management
✔ System diagnostics and event reporting
✔ Access to configuration and service menus
✔ Local user interface (HMI)
✔ Communication with the inverter main control board
🔌 Function Within the Inverter
Inside REFUsol photovoltaic inverters, this module serves as the primary Human Machine Interface (HMI) and allows users to:
- Monitor real-time inverter operation
- View energy production data
- Access configuration settings
- Display warning and fault messages
- Navigate service and maintenance menus
- Monitor system performance and operating status
👉 This board acts as the main communication interface between the user and the inverter.
🔧 Technical Specifications
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Manufacturer: REFU Elektronik
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Board Code: BF29724B
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Part Number: 0029725B/01
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Type: Display Control Board / HMI Board
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Display: Graphic monochrome LCD
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Microcontroller: Atmel ARM
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Origin: Made in Germany
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Application: REFUsol photovoltaic inverters
📊 Displayed Information
The integrated LCD display can provide:
- Instantaneous AC power output
- Daily and total energy production
- DC input parameters
- Grid connection status
- Inverter operating mode
- Alarm and fault messages
- System events and diagnostics
- Configuration settings
⚠️ Typical Faults and Symptoms
A defective display control board may cause:
❗ Blank or unreadable display
❗ Missing production data visualization
❗ Frozen menus or navigation issues
❗ Communication errors with the inverter controller
❗ Incorrect status indications
❗ Startup display failures
❗ Unresponsive user interface buttons
❗ Loss of diagnostic information
🚨 Possible Related Errors
Depending on inverter model and firmware version, failures involving the display control board may be associated with:
- Display Error
- HMI Communication Fault
- Internal Communication Error
- User Interface Fault
- LCD Initialization Error
- Control Panel Fault
- System Monitoring Error
- Firmware Communication Error
🔄 Compatibility
Used in several REFUsol inverter models, including:
- REFUsol 008K
- REFUsol 010K
- REFUsol 013K
- REFUsol 015K
- REFUsol 020K
and other REFU inverter models using the same BF29724B board reference.
Always verify the board code BF29724B and Part Number 0029725B/01 before purchase.
🛠 Applications
- REFUsol inverter repair
- Replacement of faulty LCD display modules
- Restoration of inverter monitoring functions
- Repair of communication and HMI faults
- Refurbishment of photovoltaic inverters
- Professional maintenance of PV systems
💡 Advantages
✔ Original REFU Elektronik component
✔ Integrated graphic LCD display
✔ Restores inverter monitoring capabilities
✔ Enables configuration and diagnostics access
✔ Reliable industrial-grade electronics
✔ Cost-effective repair solution compared to inverter replacement
🟢 Summary
The REFU Elektronik BF29724B Display Control Board is the original HMI and display interface module used in various REFUsol photovoltaic inverters. Equipped with a graphic LCD display and Atmel ARM-based control electronics, it provides monitoring, diagnostics, configuration access, and user interaction, making it an essential component for the proper operation and maintenance of REFU photovoltaic inverter systems.
