What Is This Control Board? This is a genuine replacement main control board (PCB) for the Rocket Faustino 3.1 and Giannino coffee grinders, rated at 220–240V / 50–60Hz. The control board manages the grinder’s motor control, dosing logic, and display functions. A faulty board is a common cause of the grinder failing to power on, dosing incorrectly, or displaying error codes. Compatible Rocket Grinder Models Rocket Faustino 3.1 (from February 2022) Rocket Faustino 3.1 (from October 2022) Rocket Giannino (from March 2023) Not sure which version you have? Contact us with your grinder’s serial number and we’ll confirm compatibility before you order. Specifications Voltage: 220–240V Frequency: 50–60Hz Type: Main control board / PCB Application: Rocket Faustino 3.1 and Giannino coffee grinders Symptoms of a Faulty Grinder Control Board Grinder not powering on despite being plugged in Grinder cutting out mid-grind or randomly shutting off Incorrect or inconsistent dose weights Display not illuminating, freezing, or showing error codes Buttons or controls unresponsive Erratic motor behaviour or speed fluctuations Before Replacing the Control Board At $320, this is a high-value part — rule out simpler causes first: Check the power outlet and cable for faults Inspect the on/off switch and any fuses on the board Test the motor independently if possible Confirm the issue persists across multiple power cycles and resets How to Replace the Grinder Control Board Unplug the grinder completely before opening the casing Remove the outer casing panels to access the internal electronics Photograph all wiring connections before disconnecting anything Unscrew the old board from its mounting points and disconnect all connectors Fit the replacement board, reconnect all wiring per your photos, and reassemble Power on and test dosing and display functions before returning to service Control board replacement is best performed by a qualified technician. Contact us if you need installation guidance or compatibility confirmation. Why Buy From Bear Coffee Machine? Genuine Rocket Espresso OEM grinder parts — not aftermarket substitutes Fast shipping from Sydney, Australia Expert support — we can confirm compatibility using your grinder’s serial number