Huawei DTSU666-FE User Manual (English)

Questions and Answers:

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Jaclyn MarquezAug 10, 2025
Why is my Huawei Security Sensor metering inaccurately?
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  Jacob DavisAug 10, 2025
  Inaccurate metering in your Huawei Security Sensor can stem from a couple of issues. First, the cable connections may be incorrect, so verify that the phase sequence of voltage and current is correct, referring to the wiring diagrams. Second, the high and low ends of the current transformer inlet might be reversely connected. If the values Pa, Pb, and Pc are negative, you should change the cable connection for the current transformer to ensure correct connection.
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Eric HardyAug 20, 2025
What to do if my Huawei Security Sensors have no display after power-on?
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  kmarshallAug 20, 2025
  If your Huawei Security Sensor shows no display after powering on, the issue might be related to the cable connection or the voltage supply. Ensure the cables are correctly connected according to the wiring diagrams. Also, check that the voltage supplied matches the specifications required for the sensor.
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davisginaAug 30, 2025
How to fix abnormal RS485 communication in Huawei Security Sensors?
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  Matthew JohnsAug 30, 2025
  Abnormal RS485 communication in Huawei Security Sensors can be due to several reasons: * The RS485 communication cable might be disconnected, short-circuited, or reversely connected. If the cable is faulty, replace it. * The communication address, baud rate, data bit, and parity bit of the meter may not match those of the inverter. Correct this by setting these parameters to match those of the inverter using the buttons on the device.