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Heather RiddleAug 14, 2025
What to do if the red LED “Fault“ is on and signal output M2 is LOW on my MAYSER Control Unit?
- EEugene BryanAug 15, 2025
If the red LED “Fault“ is on and the signal output M2 is LOW, it could be due to an incorrect monitoring resistor on the sensor. Ensure the sensor is connected with the correct monitoring resistor, either 1k2 or 8k2. Another potential cause is that the sensor is incorrectly connected. Verify the terminal connections, ensuring that a sensor with 1k2 is connected to Y1 and Y2, or a sensor with 8k2 is connected to Y1 and Y3. Also, a cable break can cause this problem, so replacing the sensor might be needed.
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