Bosch 8733802694 EON ECM Board Kit

- EON ECM control board for heat pump systems.

- Manages communication between the thermostat and the ECM blower motor.

- Coordinates staged heating, cooling, and fan operation at correct airflow levels.

- Ten-position screw terminal strip for low-voltage thermostat wiring.

- R and C terminals provide 24V power connections.

- G, O, Y1, Y2, W1, and W2 terminals handle standard system calls.

- H and C terminals dedicated to humidity control.

- Color-coded terminal sections separate power, system calls, and humidity wiring.

- O terminal supports reversing valve control for heat pump operation.

- Dual-stage Y and W inputs support two-stage compressor and auxiliary heat sequences.

- Individual status LEDs indicate which thermostat calls are active.

- DIP switch banks for CFM selection, airflow trim, and humidity output settings.

- Quick connect tabs for direct component wiring.

- Multi-pin harness connector for factory-style furnace or air handler connection.

- Alternate part number 8-733-802-694.

- Select SM Series.

The Bosch 8733802694 EON ECM board serves as the control and interface module for heat pump systems, managing communication between the thermostat and the ECM blower motor so that staged heating, cooling, and fan operation run at the correct airflow levels. Wiring is handled through a clearly marked ten-position screw terminal strip that separates power at R and C, standard system calls at G, O, Y1, Y2, W1, and W2, and humidity control at H and C, with the sections grouped by color so each low voltage conductor lands where it belongs during installation or replacement. Heat pump-specific terminals, including O for reversing valve control and dual-stage Y and W inputs, allow the board to support two-stage compressor and auxiliary heat sequences. Individual status LEDs beside each input show which calls the board is receiving, while onboard DIP switch banks handle CFM selection, airflow trim, and humidity output settings, and quick-connect tabs plus a multi-pin harness connector complete the factory-style connections to the furnace or air handler.