Wuhan unified Sakura Snow range hood after-sales service point telephone number (411) ... 7368 ... 298)-factory maintenance point

Common faults and repair methods.

(1) press the function switch of the range hood, and the display screen of the range hood is completely unresponsive.

this failure of the range hood is caused by different power supplies. (2) The automatic control of the range hood fails, and the indicator light is not on. This failure is mostly due to lack of cleaning and maintenance, and the gas sensor installed on the remote control panel is very fast. Remove the gas sensor, put the net cover into the cleaner and clean it with a brush. If there is dirt on the surface of the gas sensor head, it can be cleaned with anhydrous alcohol and put back in its original position, and the fault can be eliminated. If it doesn't work, you can improve the sensitivity by adjusting the sensitivity potentiometer in the automatic control circuit. If it still doesn't work, the potentiometer is mostly damaged, so you can replace it. If the above repairs fail, the gas sensor is aging and invalid, so replace it with a new product and troubleshoot it. (3) Press the key switch, and the motor will not turn when it turns. This fault is mostly caused by the following reasons: First, the moving contact of the key switch is deformed, resulting in the moving and static contacts being at arm's length. Clean the moving contact with cleaning agent, then clamp the root of the moving contact with needle-nosed pliers for correction, restore elasticity and make the moving contact contact normally. The second is to find out the loose screw and tighten it again through the loose wire contact of the motor connector screw. Third, the motor connector is loose, find out the loose connector, reconnect it, solder it with tin if necessary, and wrap it with insulating tape. (4) The motor is difficult to start or does not start. This fault is mostly caused by leakage or failure of the starting capacitance of the motor. (5) The motor can rotate, the noise is loud, and the shell is very hot. This fault is mostly caused by serious oil shortage or wear of the oil-bearing of the motor rotor. First, remove the fan blades and hold the rotor shaft end with your hands and shake it gently. At this time, there are two phenomena: First, it is not loose, and the hand feels tight, which is a serious oil shortage; Second, there is a loose phenomenon, and the feel gap is very large. This phenomenon is that the bearing is seriously worn and needs to be replaced with a new bearing.