Name: Main Controller Card PWB1
Part Number: 718673
Includes:

• Main PWB1 PCB

• Pre-configured cables for:

  • Inverter PCB connection

  • Capacitor module connection

This board is the central intelligence module for the Nibe F2040 12kW, controlling critical functions such as inverter communication, sensor processing, fan operation, and error diagnostics.

System Compatibility

• Specifically compatible with:
  Nibe F2040 – 12kW model

Note: This board is not interchangeable with those used in the 6kW, 8kW, or 16kW F2040 variants due to differences in hardware architecture and firmware coding.

Key Features & Functional Role

Control and Integration

• Serves as the central control hub in the F2040 12kW outdoor unit

• Interfaces directly with:

  • Inverter PCB (to control compressor speed and operation)

  • Capacitor (for electrical stability and startup power)

  • Fan, sensors, and external system controllers (e.g. SMO/VVM modules)

System Management

• Controls:

  • Temperature regulation

  • Compressor modulation

  • Fan speed adjustment

  • Fault and status monitoring

• Processes real-time sensor data to adapt system behaviour for optimal efficiency

Communication Coordination

• Manages internal data bus connections and external comms

• Supports integration into smart heating management systems through SMO interface

Installation & Setup

What’s Included:

• PWB1 Controller Board

• Cables for:

  • Inverter control signals

  • Capacitor power routing