Fault analysis and treatment methods for thermistor temperature sensing elements

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This post was last edited by RSchufaqi on 2017-9-27 08:45. Analysis of causes and solutions for malfunction symptoms: The gauge reading is lower than the actual temperature or the reading is unstable. (1) There is water accumulation inside the protective sleeve； (2) There are metal shavings or dust on the junction box ； (3) Short circuit or grounding between the thermal resistance wires. (1) Remove the water accumulated inside the protection tube and dry the damp areas ； (2) Remove metal shavings or dust from the junction box ； (3) Use a multimeter to check for short circuits or ground faults in the thermal resistor, and eliminate them; if there is a short circuit, it should be replaced. The instrument indicates a maximum value, indicating an open circuit in the thermal resistor (1). Use a multimeter to check the faulty section and resolve the issue ； (2) If the connecting wire is broken, it should be repaired or replaced ； (3) If the thermal resistor is open-circuited, it should be replaced.