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Relay manufacturers analyze the common causes and situations of faults in operating relays. Nowadays, almost every household has a refrigerator, and it is difficult to imagine what life would be like without a refrigerator. But if the electric freezer is used for a long time, it is difficult to avoid "problems". Now let's summarize the common causes and situations caused by the operation signal relay of household refrigerators.

Common faults in the operation of relays are often caused by the following reasons:

1. Operation relay base combination touch point burning, adhesion, surface adhesion dust, etc

2. Poor connection or poor touch between the operation relay and overload protector and the refrigeration compressor motor;

3. Loose wiring of the relay coil combination or electromagnetic coil routing of the driver current.

4. The touch point of the operating relay cannot be closed.

What are the obvious situations if common faults occur in the operation of relays?

1. The power supply voltage is within the allowable range of roughness, and the refrigeration compressor continues to operate for more than three times, but still cannot enter normal operation.

2. The power supply voltage is normal, the refrigeration compressor and car engine are intact, and there is no sound of touch points after the power switch is connected. The refrigeration compressor buzzed for about 10 seconds and then there was no sound up or down. After a period of time, the situation repeated again.

3. The power supply voltage is normal, the motor is intact, and there is no abnormal noise from the refrigeration compressor after connecting the switch power supply. The suction current is 0A, and the thermal protection touch point is disconnected after 3 seconds.

4. The power supply voltage is normal and there are no issues with the motor. After the power switch was connected, the refrigeration compressor made a buzzing sound, and the suction current was above 5A. After 3 seconds, the touch point continued to turn on, and then the thermal protection touch point turned off. Distinguish whether the running relay is damaged based on common problems, and if it is damaged, it should be replaced immediately. Special attention should be paid to the compatibility issues of other electronic components when replacing and operating relays. The different specifications and models of the operating relay and overload protector can cause the refrigeration compressor to malfunction or frequently start and stop. Therefore, when selecting a replacement operating relay, it is necessary to have specific guidance from skilled professionals.

Article source: Zhongshan Relay Manufacturer qzjyw.com