A 3-Blink Error is a communication fault shutdown. It occurs when a critical error happens on the CAN bus network while the machine is actively running an operation.
If you see the LED on the Power Module blinking three times every 5 seconds, the machine has detected a failure in communication between its internal modules during an active process.
To ensure safety and prevent incorrect mixing, the system triggers an emergency shutdown. This error is often the hardware-side equivalent of seeing a 301 or 208 error on your tablet.
Reboot the Mixmate. Power down the machine completely, wait a few seconds, and turn it back on. This clears the communication buffer and allows the modules to re-establish their connections.
If the 3-blink error persists, you are likely dealing with electrical "noise" or a physical wiring issue. Check the following:
Grounding Connection: Inspect the ground wire between the Power Module and the machine frame. A poor ground is the most common cause of communication "noise" that disrupts the signals between modules.
CAN Bus Resistance Test: This is the most important test for communication health.
SHUT OFF ALL POWER to the Mixmate.
Use a digital multimeter to measure the resistance between the GREEN and YELLOW wires inside the Power Module.
Target: ~60 Ohms. * 120 Ohms: One terminator is missing/broken.
Above 70 Ohms: The system will be unstable and throw 3-blink errors frequently.
Below 50 or Above 135 Ohms: The system will not work at all.
Power Source (Voltage): Check your battery. If the voltage dips too low while a valve or pump is drawing power, the communication signal can "brown out," causing the modules to lose track of each other and trigger a shutdown.