What should I do if the high pressure of the cold storage compressor becomes low, the low pressure b

Overhaul or replace the compressor. Because the check valve inside the compressor is broken.

Normally, it should be melted every 12 hours, and the specific outdoor ambient temperature is determined by how many degrees your cold storage is. If the defrost relay is mechanical, when adding refrigerant, it will melt once every 6 hours at most, and it will also clog the filter drier. Unless you have replaced the expansion valve yourself, you have to wait for the temperature of the cold storage to cool down before you can accurately judge?

I don't know how many degrees the cold storage is. 8 kg, bring out the refrigeration oil of the compressor, the return air temperature of the compressor rises, you can see if there are many bubbles in the oil mirror of the compressor refrigeration oil.

It is recommended to replace the filter drier and the low pressure should be less than 1. Looking at the effect, there is no way to know what the low pressure should be. Adjust the expansion valve down.

A large amount of refrigeration oil, indicating that the filter drier is a little blocked, the evaporation temperature increases, because the refrigerant flow rate is too fast, the low pressure pressure should not be higher than 1, the high and low pressure pressure difference becomes larger, the filter drier has a temperature difference, it should be the refrigerant is added, the evaporation temperature is reduced. How often the defrosting relay is adjusted, the return air temperature of the compressor becomes low, and the expansion valve is not adjusted randomly.

In addition, it is also necessary to check whether the filter drier is blocked, and whether there is a temperature difference between the front and back ends of the filter drier?

Cold storage at 25 degrees? The defrost heating tube is not working properly. The normal high-pressure pressure is not higher than 16 kg until the high-pressure pressure is 16 kg (when the outdoor ambient temperature is 30 degrees), but if the refrigerant is added.

The outdoor unit condenser is not dirty. The expansion valve is turned up. 8 kg, put the refrigerant off the point, the compressor current increases.

But according to your narrative.

1. The cause of compressor overcurrent

To put it simply, there are three reasons for the overcurrent of the compressor:

1. The condensing pressure of the refrigeration system is too high.

2. Too much refrigerant in the refrigeration system.

3. The compressor lacks refrigeration oil.

Let's take a closer look:

1. Poor heat dissipation of the external unit.

Short circuit of the external unit return and exhaust air: If the external unit is installed in a closed balcony, in a narrow aisle, in an unventilated place such as the house, there are obstructions in front of the tuyere.

The air volume of the external unit is small, and the heat dissipation speed is slow: if the condenser of the external unit is too dirty or blocked by dust and oil, the fan motor speed is slow, the fan capacitance becomes smaller, and the temperature around the external unit is high.

2. External power supply voltage factor.

The power supply voltage is low or high, both of which will cause the compressor working current to be high, and the domestic voltage is low to account for the vast majority, especially during the peak of electricity consumption.

If the power supply voltage (i.e. the voltage before start-up) is too low: the user should be asked to rewiring, if the voltage is about 190V, you can consider installing a voltage regulator, if it is too low, it will be invalid.

Check the voltage drop after starting: under normal circumstances, the voltage drop is only a dozen volts, and if the voltage drop is too large, the power cord should be thickened or rewired, and the fault such as poor line contact should be eliminated.

3. Refrigeration system failure.

Mixed air in the refrigeration system: if there is air in the system, the air often accumulates in the upper part of the condenser, because it cannot pass through the liquid accumulation device of the condenser, whether there is air in the system, generally can be determined by the beating of the system pressure, if there is air in the system, it should be re-evacuated and fluoridated.

Excessive fluorine: The compressor is overloaded for a long time, which will eventually lead to the compressor overcurrent jumping. In this case, part of the fluoride should be released to.

Fourth, the internal temperature of the shell is high.

Poor lubrication of the compressor: the height difference between the indoor and outdoor units is greater than 5 meters, and the oil return bend is not made, or the oil return bend is only made on one pipe, the system can not return the oil smoothly, and the temperature of the compressor slowly rises during operation due to lack of lubrication, and finally leads to overheating and jumping.

Too much impurities and moisture in the system: the lubricating oil deteriorates, carbonizes, and cannot play its normal effect, resulting in a sharp rise in compressor temperature and overheating and jumping. This situation generally occurs on machines that have been repaired or used for a long time, and if the substances in the inspection system are black, then this must be the case, at this time, nitrogen should be used to clean the system, replace the compressor, capillary assembly, and re-evacuate and add fluorine.

Fifth, the cooling effect of the compressor is not good.

If the fluorine is too little, the system flow rate is small, which can not meet the 100% load of the evaporator, resulting in the increase of suction superheat, coupled with the small suction flow rate of the compressor, the cooling efficiency is greatly reduced, so that long-term operation can lead to compressor thermal protection.

1. The radiator of the outdoor unit of the air conditioner is too dirty or blocked by debris, and the heat exchange is poor;

2. The speed of the cooling fan of the outdoor unit decreases: first, the capacitor capacity decreases, and the second is the poor lubrication of the motor; the third is a short circuit in the motor coil; Fourth, the fan blades are broken or deformed;

3. There is too much freon in the pipeline, resulting in excessive load on the compressor;

4. There are problems with the compressor itself.

1.Too much fluorine, high temperature on hot days, low pressure of air conditioning should be in one, (the highest only.)

2.Because the landlord added to 7kg, it will definitely cause the overcurrent of the high-pressure over-high compressor and thermal protection, only 1 kva, the ideal current is about one, and the nameplate is marked as the maximum load current, not the continuous operation current, so as to prolong the life of the compressor.

The current is too low, there are several reasons, 1 There are few refrigerants.

2 Four-way valve string.

3 Compressor valve plate does not work.

Of course, you don't care about the amount of current, as long as he cools down well and everything runs normally. Caught in the trap of the maintenance man.

The operating current of the air conditioner is about the same.

Judging by the current of 30 amps. This air conditioner is not a horse, that master has not opened your compression crimp terminal to check. Have you ever replaced the capacitor test. If you have both. There's a problem with the compressor. You can do second-hand from those.

What is the reason for the low pressure of the cold storage refrigerator is high and the high pressure is low?

Hello, the low pressure of the refrigerator is high, and the reason for the low pressure may be 1: when the low pressure of the air conditioning system is detected by the air conditioning pressure gauge is higher than normal, and the high pressure is lower than normal, at this time, the air conditioning refrigeration can never achieve the effect of normal air conditioning. According to the formula, the general failure cause is the wear and tear in the air conditioning pump, which leads to a decrease in power.

At this time, it is often necessary to replace the compressor to solve the problem. 2: When it is detected that the high and low pressure of the system is higher than normal, the common fault is generally that the system has air or excessive refrigerant, at this time, it is necessary to re-vacuum, and then add an appropriate amount of refrigerant to solve the problem.

However, there is another situation, that is, poor heat dissipation, especially when the ambient temperature is relatively high, which often leads to worse heat dissipation.

Summary. Hello, dear, I am happy to serve you, here for you to find out that there are many possible reasons for the high pressure of the cold storage compressor, the following are some common reasons: 1

Evaporator failure: The evaporator may become clogged or clogged, causing the pressure within the refrigeration system to rise. 2.

Condenser failure: The condenser may be subjected to an excessive heat load, or there may be air or moisture entering the condenser, resulting in an increase in high pressure pressure. 3.

Compressor failure: Compressors can experience internal failures such as damaged valves, stuck pistons, etc., resulting in increased pressure at high pressures. 4.

Insufficient refrigerant: If there is not enough refrigerant in the refrigeration system, it will lead to an increase in pressure within the system. 5.

Filter blockage: If the filter is blocked, it will result in a decrease in flow within the refrigeration system, resulting in an increase in high pressure pressure. 6.

Electrical faults: The electrical components of the refrigeration system may malfunction, such as damaged capacitors, short circuits in the lines, etc., resulting in an increase in high voltage pressure. When it is found that the high-pressure pressure of the cold storage compressor is too high, it should be stopped immediately, and inspection and maintenance should be carried out.

It is advisable to seek professional technicians for overhaul and maintenance.

Hello, dear, I am happy to serve you, here for you to find out that there are many possible reasons for the high pressure of the cold storage compressor, the following are some common reasons: 1Evaporator failure:

The evaporator may experience blockages or fouling blockages, resulting in increased pressure within the refrigeration system. 2.Condenser failure:

The condenser may be subjected to an excessive heat load, or there may be air or moisture entering the condenser, resulting in an increase in high pressure pressure. 3.Compressor failure:

Compressors can suffer from internal failures, such as damaged valves, stuck pistons, etc., resulting in increased pressure at high pressures. 4.Insufficient refrigerant:

If there is not enough refrigerant in the refrigeration system, it will lead to an increase in pressure in the system. 5.Filter blocking:

If the filter is blocked, it will lead to a decrease in the flow rate within the refrigeration system, which will lead to an increase in high pressure pressure. 6.Electrical Fault:

The electrical components of the refrigeration system can malfunction, such as damaged capacitors, short circuits in the lines, etc., resulting in high pressure increases. When it is found that the high-pressure pressure of the cold storage compressor is too high, it should be stopped immediately, and inspection and maintenance should be carried out. It is advisable to seek professional technicians for overhaul and maintenance.

What else can we do for you<>

What is the reason for the low pressure of the cold storage refrigerator is high and the high pressure is low?

Hello, I'm glad to answer for you. The low pressure of the cold storage chiller is high, and the reason for the low pressure may be 1: when the air conditioning pressure gauge detects that the low pressure of the air conditioning system is higher than normal, and the high pressure is lower than normal, the air conditioning refrigeration at this time can never achieve the effect of normal air conditioning.

According to the formula, the general failure cause is the wear and tear in the air conditioning pump, resulting in a decrease in power. At this time, it is often necessary to replace the compressor to solve the problem. 2：

When it is detected that the pressure of the system is higher than normal, the common fault is generally that the system has air or refrigerant and excessive intake, at this time, it is necessary to re-vacuum, and then add an appropriate amount of refrigerant to solve the problem. However, there is also a situation that is poor heat dissipation, especially when the ambient temperature is relatively high, which often leads to worse heat dissipation, and the cause of this failure is generally that the heat sink is blocked, dirty, and the speed of the cooling fan is not enough. I hope mine can help you and I wish you a happy life <>

Summary. Hello, the low pressure is too high, it may be that the compressor is reversed, it is connected to the wrong power supply, or it may be caused by poor heat dissipation of the condenser.

Do you see what's wrong with the high-pressure gauge?

If the high pressure of the equipment is reduced while operating, it must be the compressor reversing.

If it is water-cooled, make the device your increase in the flow rate of the water tower to solve the heat dissipation effect.

If it is air-cooled, clean the fins of the condenser first and put it in a place with better air convection, or you can make an exhaust for the fan (the equipment is in the house).

What is the reason for the low pressure and high pressure of cold storage.

Hello, the low pressure ruler is too high, it may be that the compressor is reversed, it is connected to the wrong power supply, or it may be caused by the poor heat dissipation of the condenser. Do you see what's wrong with the high-pressure gauge? If the high pressure and wide balance of the equipment are reduced when the equipment is working, it must be the compressor reversal.

If it is water-cooled, make the trap pin prepare you to increase the flow rate of the water tower to solve the heat dissipation effect. If it is air-cooled, clean the fins of the condenser first and put it in a place with better air convection, or you can make an exhaust for the fan (the equipment is in the house).

The high voltage is also lower than before, it used to be normal, and there was no power cord.

Then you check to see if there is something wrong with these places. 1. The compressor efficiency is low, or the internal leakage is leaked. 2. The opening flow rate of the expansion spike valve is too large. 3. Too much refrigerant liquid. These all result in low pressure high and high pressure low.

It used to be normal, but now it doesn't cool down.

It is precisely because of the failure that it will not cool down, and it needs to be inspected and repaired.

Summary. What is the reason for the low pressure of the cold storage refrigerator is high and the high pressure is low? Hello dear, <> condensation pressure is too high:

Capillary blockage or excessive Freon charge; Refrigeration is significantly reduced or not refrigerated. Low pressure is too low: Freon is not enough, there is leakage; Refrigeration is significantly reduced or not refrigerated.

What is the reason for the low pressure of the cold storage refrigerator is high and the high pressure is low?

What is the reason for the low pressure of the cold storage refrigerator and the low pressure of the cold storage refrigerator? Hello dear, <> the condensation pressure is too high: the capillary is blocked or the Freon charge is too much; Refrigeration is significantly reduced or not refrigerated.

The chiller has a low pressure and a high pressure.

Hello dear, <>

The two original grandchildren rushed to 1, the load was too heavy, that is, the low pressure was too high. 2. Poor condensation, too much dust in the condenser, or poor condensing fan, the water cooler is generally too much scale in the condenser and affects the condensation. Hope it helps.

Summary. <>

Dear, hello, I'm glad to ask you for the following answers: What is the reason for the low pressure of the cold storage refrigerator is high and the high pressure is low? The reasons are as follows: the fault is usually that the system has too much air or refrigerant.

What is the reason for the low pressure of the cold storage refrigerator is high and the high pressure is low?

Dear, hello, I am very happy to ask you for the following answers: What is the reason for the low pressure of the waxing machine before returning to the warehouse for refrigeration? The reasons are as follows: the fault is generally that the system has air or refrigerant added in excess of hunger.

Pro, there may be a problem with the compressor, the flow rate is too small, resulting in the gas refrigerant can not circulate normally, and the low pressure will be high and the high pressure will be low.

Pro, the situation that the low pressure of the air conditioner is too high or the lack of high pressure is too low may be due to the unobstructed circulation in the air conditioning system, the failure of the compressor or the failure of the expansion valve.

Dear, at this time, it is often necessary to replace the compressor to solve the problem.