Hinweise zum Klimaanlagen-Temperatursensor -1
Generally, 5K–10K temperature sensor is used for hanging machines, and 10K—20K temperature sensor is used for cabinets. Specifically, you need to use your own multimeter to measure the resistance.
The general ambient temperature sensor is a small thing that is close to the fins in the black side of the outdoor unit against the wall. The temperature sensor of the tube is inserted in the wall of the coil inside the outdoor unit.
Der Kupferkopf wird zur Erfassung von Kupferrohren verwendet und reagiert schnell auf Temperaturänderungen. Der Kunststoffkopf wird allgemein zur Erfassung der Umgebungstemperatur verwendet, ist korrosionsbeständig und hochzuverlässig.
So beurteilen Sie den Widerstand des Klimaanlagen-Temperatursensors
Der Schaltungsentwickler der Klimaanlage verwendet die Normaltemperatur von 25 Grad als Referenz, d. h. bei 25 °C gilt RTl=R1, RT2=R2, und die Spannungen an den Punkten A und B betragen 2,5 V. Einige Schaltungen sind mit R3 und R4 ausgestattet, die hauptsächlich als Puffer dienen. Wenn die Umgebungstemperatur steigt, sinkt der RTI-Widerstand, die Spannung an Punkt A steigt, der Komparator gibt eine Druckdifferenz aus, und eine Reihe interner Verarbeitungen der CPU steuert die internen und externen Betriebszustände.
Large air conditioner, inverter air conditioner external control board, temperature sensor connected VI sampling voltage is not 2.5V, but 1/4 power supply voltage, which is 1.25V. In fact, there is a method to determine the thermistor resistance that is particularly simple. Choose a 50k potentiometer and a thermistor universal plug. For convenience, you can connect with long wires. Unplug the suspected thermistor, plug in the universal plug, energize the air conditioner, and test the potentiometer with the multimeter 5V. The voltage of the terminal slowly turns the potentiometer handle. When the voltage is 2.5V, the rotation stops. At this time, the resistance of the potentiometer is the resistance of the thermistor. For example, if the resistance is 8k and the ambient temperature is about 30°C, then the temperature sensor has a resistance of 10k.
How to judge the quality of the air conditioner temperature sensor
If the air conditioner temperature sensor is broken, the following phenomena will occur, and the air conditioner temperature sensor can be judged by this:
1. The indoor ring temperature sensor has a large resistance value, causing the air conditioner to start frequently.
2. The resistance of the indoor tube temperature sensor becomes smaller, which causes the whole machine to be protected soon after starting.
3. The indoor temperature and temperature of the pipe are changed, causing the air conditioner to malfunction.
4. The indoor tube temperature change value is 0 Ω, which causes the whole machine to start remotely without reaction.
Solution when air conditioning temperature sensor is bad: The temperature sensor barrier has a relatively large proportion in air conditioning faults. To accurately determine the function, the air conditioning control section has three temperature sensors:
1. Room temperature sensor: mainly detects the indoor temperature. When the indoor temperature reaches the set requirement, the internal and external machines are controlled. When the cooling is stopped, the external machine stops, and the internal machine continues to run.
2. Indoor tube temperature sensor: It mainly detects the coil temperature of the indoor evaporator, and prevents cold air, anti-overheat protection and temperature automatic control during heating.
2. Indoor tube temperature sensor: It mainly detects the coil temperature of the indoor evaporator, and prevents cold air, anti-overheat protection and temperature automatic control during heating.
3. Außentemperaturfühler für Abtauung: Erfasst hauptsächlich die Temperatur der Kondensatorspule im Außengerät. Wenn die Temperatur der Außenspule für 2 Minuten unter -6 Grad Celsius liegt, schaltet das Innengerät in den Abtaumodus. Ist der Widerstand des Außenspulensensors zu hoch, arbeitet das Innengerät nicht ordnungsgemäß.
Analysis of the reason why the air conditioner display temperature is inconsistent with the actual perceived temperature:
Analyse der Ursachen für die Abweichung der am Klimagerät angezeigten Temperatur von der tatsächlich wahrgenommenen Temperatur:;
1. Falsche Einstellung der Fernbedienung;
2. Filter nicht rechtzeitig gereinigt;
