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