How to get a four wire air conditioner pressure sensor with one less tie wire?

Pressure sensor No output of pressure transmitter 1: Check whether the power supply of the pressure sensor is reversed; Connect the power supply polarity correctly 2: Measure whether the power supply of the transmitter has a 24V DC voltage; The supply voltage supplied to the transmitter must be 12V (i.e. the voltage at the input of the transmitter supply is 12V).

If there is no power supply, you should check whether the circuit is disconnected and whether the detection instrument is selected incorrectly (the input impedance should be 250); Wait a minute. 3: If it is with a meter head, check whether the meter head is damaged (you can short circuit the two wires of the meter head first, if it is normal after short circuit, it means that the meter head is damaged); If the meter head is damaged, it needs to be replaced, 4:

Serial the ammeter into the 24V power supply circuit to check whether the current is normal; If it is normal, it means that the transmitter is normal, and you should check whether the other meters in the circuit are normal.

The line of sight air conditioning pressure sensor is less than a large iron wire, that is, one less zero line, you need to find an electrician to help you carry out technical operations, which belongs to technical work, you can't just get it yourself, it is easy to get the air conditioner, and the pressure sensor will be damaged if it is not good.

For example, this four-wire air conditioner pressure charger has one less tie wire, you can connect it from a cable, if you don't add it, it is very likely that there will be other problems, so it is best to connect it.

The 4-wire air conditioner pressure sensor has one less iron wire, so I think it's okay to reconnect this wire.

If the four-wire air conditioning pressure sensor is missing one wire, you have to connect it through a different line.

In this case, I suggest that you can choose a ground wire to connect it yourself, then relatively speaking, the connection method of this wire is relatively simple, just follow its screws to screw it.

The four-wire air conditioning pressure sensor is missing an iron wire, how to get it? This is a four-wire air conditioner pressure sensor missing, and when the iron wire is built, I can go and bird him on it.

If the sensor is missing one wire, then it becomes difficult to use, and it must be connected to him if it is not sensitive.

The air conditioner has less of a bottom line, and you can connect the body to the ground wire of the building.

The four-wire air conditioning pressure sensor is missing an iron wire, which can be equipped at a later stage.

In the case of a four-wire air conditioning pressure sensor, if there is one less wire to tie the iron wire, there is no way to use it, because the sensing is still relatively powerful.

If the pressure sensor of the electric air conditioner is missing, it should be difficult to ride.

The four lines are two lines to control the high-pressure pressure switch and two lines to control the low-pressure pressure switch. Direct shorting of the pressure sensor is working properly, indicating that the pressure switch is damaged. Its function is to protect the air conditioner when the pressure of the air conditioner is abnormal, and the direct connection can work normally, but the protection work is missing.

Dear, hello, I'm glad to answer for you, the air conditioning pressure sensor is missing and the three wires have met together Answer: a live wire, a neutral wire, and a pressure switch line, that is, when it comes to the set pressure, there is electricity on this line. The electricity from this wire is then transmitted to the compressor via a relay.

1, There are many kinds of automobile air conditioning lines, and the control methods are different for different models, but as you said, the three lines to the compressor should be Toyota, and its control principle is: after the air conditioning switch is turned on, it will be obtained from any gear of the fan switch to take the iron, and the command will be transmitted to the air conditioning amplifier (air conditioning ECU), the air conditioning amplifier collects the evaporator sensor (installed in the evaporation box), the pressure sensor (installed on the high-pressure pipeline), and the compressor locking sensor is also called the speed sensor (installed on the compressor), The engine speed sensor is used as the input signal, (the automatic air conditioner also adds: ambient temperature sensor, indoor temperature sensor, engine water temperature sensor, sunlight sensor, etc. as the input signal) to control the compressor electromagnetic clutch relay, cooling fan relay, and then the relay transmits power to the compressor and cooling fan, and the air conditioner starts to work.

2 When the pressure is too low, none of them will pass, these are signal lines, and they will only be used after the relay. 3. Before vacuuming, add the oil directly to the compressor to dress up, the traditional practice is to pump the vacuum first, and then use the table filling pipe (yellow) to open the low-pressure valve to suck the oil into the low-pressure pipeline, this way is not advisable, because most of the oil at this time enters the evaporation tank, when the air conditioner is started, the compressor is prone to "liquid shock" accident.

The four wires are: two wires for high-pressure pressure switch and two wires for low-pressure pressure switch. If the pressure sensor is shorted directly, the air conditioner can work normally, indicating that the switch of the pressure sensor is damaged. Its function is to protect the air conditioner when the pressure of the air conditioner is abnormal.

The two power cords are red and black, blue is low-pressure trigger, brown or gray is high-voltage trigger, and different types of air conditioner wiring sequences and colors are different.

Two wires for high-pressure pressure switch and two wires for low-pressure pressure switch. Direct shorting of the pressure sensor is working properly, indicating that the pressure switch is damaged. Its function is to protect the air conditioner when the pressure of the air conditioner is abnormal.

The direct connection works fine, it's just that the protection work is missing! Generally, there is a low-pressure failure, one is air leakage, and the other is that the air is not vacuumed or emptied when the pipe is installed! High Voltage Faults:

Flow pipe plugging, four-way valve blockage, capillary plugging.