IC card water control machines are also very common in modern cities, and some problems often occur during use that can be headache-inducing, such as "no communication". Today, we will simply analyze the reasons and solutions for the IC card water control machine not communicating:
A. Whether there is an external short circuit or open circuit in the water controller. Whether the wiring heads are stuck together, separate them; if there's a wiring break, replace and test again.
B. Whether the communication device wiring head is connected in reverse. Adjust it and test again.
C. Internal chip or diode short circuit. Return to the factory for repair.