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The test method is to place the temperature sensor part in water or air of the matching temperature, and use a digital multimeter to measure whether the two terminals are open or open, so as to know the quality. Thermistor resistance belt temperature controller is also used for indoor cold wind control. The defrost temperature controller is a component set in the control circuit of the intermittent hot air conditioner to switch the electro-hydraulic reversing valve.

Its temperature sensor tube is placed on the fan coil of the heat exchanger on both sides of the room. When the temperature is lower than a certain preset value due to the thickening of the frost layer on both sides of the room during winter heating, the contact point of the defrost controller is turned off. The electro-hydraulic reversing valve is disconnected, so that the original heating cycle becomes a cooling cycle. There are two common structural forms: one is thermistor resistance belt type: the other is a general temperature controller.

What should be paid attention to when using an overload protector? The overload protector product series is a temperature controller that uses a resistor as a temperature sensor component. When the appliance is working normally, the resistor is in a random state and the contact is in a closed/disconnected state. When the temperature rises to the action temperature value, the wear-resistant steel tube component generates thermal stress when it encounters heat and quickly moves, opening/closing the contact, disconnecting/connecting the power circuit, thereby playing a thermal protection role. When it gradually drops to the reset temperature, the contact automatically closes/disconnects and resumes the operating state.