1、 Output fault

• phenomenonThe output signal of the thermostat cannot reach the expected value, for example, when outputting 4-20mA, it cannot reach 20mA or exceed 20mA at 100% output.

• solution：

  • Use a multimeter to check the two corner positions of the output.
  • If it still cannot reach the normal level after verification at 100% output, it may be necessary to send it back to the manufacturer for testing.

2、 Display malfunction

• phenomenonThe PV value (measured value) of the thermostat jumps or cannot be displayed normally, showing abnormal numbers.

• solution：

  • Check if the sensor type is wired incorrectly and ensure that the correct sensor type is used.
  • Check if the parameter selection is set incorrectly.
  • If the problem persists, it may be necessary to check whether the input/output board has decayed due to prolonged use, and then it needs to be sent back to the manufacturer for repair.

3、 Wiring malfunction

• phenomenonThe entire panel cannot be displayed, possibly due to wiring errors or power issues.

• solution：

  • Check the wiring condition to ensure that the wiring is correctly connected to the power supply.
  • Check for visible signs of breakdown, burning, or blackening on the power board and transformer.
  • If the problem persists, it may be necessary to check whether the board has experienced capacitor decay or resistive breakdown due to prolonged use. At this point, it needs to be sent back to the manufacturer for inspection and repair.

4、 Malfunctions caused by environmental factors

• phenomenonThe temperature sensing cable (which may be used for temperature monitoring of temperature control cable crimping machines) experiences temperature abnormalities, such as fluctuating temperatures.

• solution：

  • Check if the cable connections are loose, as loose cable joints may cause inaccurate temperature sensing.
  • Check if the cable sheath is damaged, as any damage may cause the temperature sensing function to fail.
  • Ensure that the cable is used in a suitable environment to avoid overloading or overheating that may affect the temperature sensing function.