Check whether the input cable to the module is connected properly and whether the power grid voltage is abnormal.
Remove the load, run without load for a period of time and observe.
Remove the load, run without load for a period of time and observe.
Check whether the power grid is normal and whether the module input plug is properly inserted.
Power off the module for one minute. After the module is completely powered off, power on the module and restart it. If the fault persists, reinsert the fan. If the fault persists, replace the fan. If the fault persists, check whether the driver circuit of the fan is abnormal.