Classification, function and resistance of air conditioning temperature sensors

Air conditioner temperature sensor A temperature sensor is a sensor that converts the temperature of each part of the air conditioner into electricity by utilizing the law that various physical properties of substances change with temperature.

1, the indoor ambient temperature sensor: the indoor ambient temperature sensor is usually installed in the indoor machine heat exchanger outlet, it has three main roles: one is to detect the temperature of the room during cooling or heating, control the compressor operation of the running time; the second is to control the working state in the automatic mode of operation; the third is to control the speed of the indoor fan.

2, indoor coil temperature sensor: indoor coil temperature sensor using a metal shell, installed on the surface of the indoor heat exchanger, its main role has four: one is to prevent overcooling protection during refrigeration; the second is to prevent overheating protection during heating; the third is to control the speed of the indoor fan motor; the fourth is to be used to assist in defrosting the outdoor during the heating.

3, outdoor ambient temperature sensor: outdoor ambient temperature sensor through the plastic frame mounted on the outdoor heat exchanger, its main role has two: one is in the cooling or heating period to detect the outdoor ambient temperature, the other is to control the speed of outdoor fan with a straight to.

4, outdoor coil temperature sensor: outdoor coil temperature sensor using a metal shell, mounted on the surface of the outdoor heat exchanger, its main role has three: one is the cooling period to prevent overheating protection, the second is the heating period of anti-freezing protection, the third is to defrost during the control of the temperature of the heat exchanger.

5, the compressor exhaust temperature sensor: the compressor exhaust temperature sensor also uses a metal shell, it is installed in the compressor exhaust pipe, its main role has two: one is to detect the compressor exhaust temperature, control the opening degree of the expansion valve compressor speed, the second is used for the exhaust pipe overheating protection.