LCD Display Ventilation Fan Controller with Multi Working Modes and Fault Code Alarm for ERV HRV Systems

Product Overview:

The KF-700C controller set comes with local temperature & humidity sensing and supply air temperature monitoring. It supports up to 28 time periods weekly scheduling. The filter timer function reminds users to clean or replace filters, with filter working hour reset available. Complete fault diagnosis is integrated to show error codes for temperature sensor, supply fan, exhaust fan and communication failures.

WiFi connectivity is available for remote control via mobile APP. Child lock, 60s auto screen off and Boost rapid ventilation mode are included for daily convenience. The mainboard provides rich output terminals for fans, heater, two dampers and dry contact input, making it flexible for integration into various European ERV/HRV ventilation equipment.

The LCD panel provides simple local control and real-time air status display. With RS485 Modbus function, the controller supports long-distance wired communication and seamless integration with smart home & BMS systems.
Optimized for European residential standards, this combo helps local installers deliver stable, energy-efficient fresh air control for homes. Suitable for villas, apartments and residential renovation projects all over Europe.

Key Features:

• Four working modes: Manual, Auto Humidity Control, Weekly Timer, Away Mode
• 4 fan speed options: Low / Medium / High / Boost rapid ventilation
• Filter usage timer with filter replacement reminder & working hour reset function
• RS485 Modbus bus communication, address 1~247, compatible with BMS building central control system
• Preheater control function with temperature setting and test mode
• Child lock function to prevent mis-operation
• WiFi smart remote control, mobile APP control available

Product Specifications:

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