Error codes for roda air conditioners. Review of Roda air conditioners: mobile and wall-mounted models, their comparison, characteristics and instructions

Since the result of a statistical test of the null hypothesis is either to reject it or not to reject it, two types of errors are possible. First, the null hypothesis can be rejected when it is true. Secondly, it can be accepted when it is incorrect. These two errors are called respectively error of the first kind And error of the second type, or a mistake? And mistake?, since letters ? And? the probabilities associated with the occurrence of these errors are indicated. Errors of the two kinds are not complementary (i.e.).

To illustrate each type of error and to demonstrate that their probabilities are not complementary to each other, consider a legal analogy. Since, according to US criminal law, a person is innocent until proven guilty, the judge and jury always test the hypothesis of innocence. In fact, the defendant can be either guilty or innocent, but based on the evidence, the court can come to any verdict, regardless of the true situation. The possibilities are presented in Table 19a.1. If the defendant is innocent and the jury finds him not guilty, or if he is guilty and the jury finds him guilty, they make the right decision. If, however, the defendant is truly innocent and the jury finds him guilty, then they commit an error, as if the defendant is guilty but is found not guilty. The jurors are forced to go one way or the other, and therefore the probabilities of their decisions must add up to 1 along the vertical table. Thus, if we denote by the probability of incorrectly identifying a person as guilty when that person is innocent, then the difference 1 must be the probability of correctly identifying him as guilty. Similarly, and 1 represent the probabilities of being found innocent and guilty when the defendant is guilty. It is intuitively obvious that the sum of + is not equal to 1, although further discussion will show that? must increase when decreasing, when everything else remains the same. Since our society is generally of the opinion that finding an innocent person guilty is a more serious error than finding a guilty person innocent, the legal system strives to reduce error as much as possible, which is implemented in the requirement of proving guilt “beyond any reasonable doubt.”

Table 19a.2 presents a general approach to investigating the relevant situation. Just as the jury does not know the true status of the accused, the researcher also does not know the true situation regarding the null hypothesis he has accepted. The parallel to the researcher's dilemma in terms of the jury's situation is that he, too, is limited by the information at his disposal. Let's assume that the null hypothesis is true. If the researcher concludes that it is incorrect, he or she has made a Type I error (mistake). The significance level associated with a statistical test indicates the likelihood with which this error may occur. Since sample information is always incomplete in some way, there will be room for some error. The only way to avoid it is to never reject the null hypothesis (never find anyone guilty, to return to the legal analogy). Trust level statistical testing is represented by a difference of 1-, and the more confidence we want to achieve in the statistical result, the lower the error value should be set. Power, associated with statistical testing is the probability of correctly rejecting an incorrect null hypothesis. One-way tests are more powerful than two-way tests because, given the same error k, they are simply more likely to reject an incorrect null hypothesis. Error represents the probability that an incorrect null hypothesis will not be rejected. There is no single meaning that is associated with an error.

Table 19a.1

Legal Analogy Illustrating Error of Decision

Table 19a.2

Types of errors when testing hypotheses

Even in the hot summer, consumers often refuse to install air conditioning for a number of reasons. Residential owners are often frightened by the consequences of the installation process, believing that after installing climate control equipment, the carpet and upholstered furniture will deteriorate. The noise that invariably accompanies any installation process also discourages many from purchasing an air conditioner.

Despite the high temperature in the room, residents of city apartments continue to endure discomfort, being under the delusion that purchasing climate control equipment is nothing more than an unjustified financial expense. But the Roda RS Arctic split system allows you to avoid many troubles. These devices are extremely easy to install. And their cost corresponds to the price of the highest quality equipment.

Manufacturer information

Roda is a German company. The air conditioners produced by the company under this brand are distinguished by their attractive design and wide functionality. In their activities, Roda employees are guided by the principle of creating high-level equipment at prices corresponding to middle-class air conditioning equipment. We will not consider Roda floor-ceiling air conditioners, because... They are rarely used in everyday life.

Roda RS Arctic inverter split systems are quite simple to use, although the quality is not inferior to devices produced by leading manufacturers. This allows the consumer to purchase a device for cooling the room even if there is a shortage of funds. The operation of air conditioners in this series is reliable and fully automated. The company's employees develop equipment using an energy-saving algorithm. Subsequently, during operation, this allows you to significantly reduce energy costs, especially if we are talking about Roda duct and cassette air conditioners.

Split systems and mobile air conditioners Roda

Air conditioners produced under this brand are compact wall-mounted systems. Available models of the Arctic series:

• RS-A07B;
• RS-A12B;
• RS-A09B;
• RS-A18B;
• RS-A24B.

Installing such equipment is not particularly difficult, primarily thanks to the accessible and detailed instructions that come with each model. The Arctic climate system consists, like other similar devices, of an external and external unit. What function each of them performs is outlined in the manual.

Important qualities of the Roda RS Arctic series air conditioner are compactness and stylish design. That is, when purchasing such a device, the buyer can be calm as to whether the air cooling device will fit harmoniously into the interior of the room and how easy it will be to set up.

The instructions describe the functions in detail. The air conditioner is controlled via an infrared remote control. The Arctic climate system operates in the following modes:

• cooling;
• heating;
• drainage;
• ventilation.

It will take no more than ten minutes to understand how to operate the remote control. A description of the buttons is provided in detail in the instructions. Coolness in the sultry summer, cozy warmth on a cold winter evening - all this is easy to achieve. You just need to press the remote control button.

The advantages of Röda Arctic air conditioners are also associated with the ability to save energy. A few months after the start of operation, the buyer has the opportunity to verify the energy efficiency of such a device. This feature of Rod split systems is evidenced by numerous reviews and certificates.

The cleaning mode rids the room of fungi and bacteria. And what is important in the operation of any household appliance, air conditioners of this brand are easy to maintain. The panel is easy to remove and wash. Although, as far as maintenance is concerned, the system is capable of performing cleaning and diagnostics on its own.

Positive reviews from customers who have already acquired modern and convenient Arctic equipment indicate that these devices are extremely convenient due to the presence of additional functions. Using the remote control, you can select any of the following modes:

• antifungal;
• self-cleaning;
• auto restart;
• timer;
• sleeping mode.

In addition, the remote control has a built-in temperature sensor. This mode allows you to set the air conditioner to cold so that it independently selects the required temperature that needs to be set in the room to achieve maximum comfort. The remote control also has a built-in Anti-Cold-Air function that allows you to switch the fan speed. According to reviews of Roda air conditioners, this configured mode can relieve discomfort caused by cold air flow.

Comparison of technical characteristics of Roda split systems

Let us define an expression for calculating the error of the second type and the power of the test, construct it inMSEXCELOperating-characteristic curves.

Recall that the procedure hypothesis testing consists of the following steps:

• from the distribution under study is taken sample;
• based on values samples calculated test statistics;
• meaning test statistics is compared with values ​​corresponding to the given ;
• based on the comparison result, a conclusion is drawn about a deviation (or non-deviation) null hypothesis.

Usually with testing hypotheses There are 2 types of errors. If null hypothesis rejects when it is correct - it is Type I error(denoted by α, alpha). If the null hypothesis is not rejected when it is false, then it is Type II error(denoted by β, beta).

For hypothesis testing this type is used test statistics Z 0:

To find Error of the second type it is necessary to assume that the hypothesis H 0: μ=μ 0 is not true, and accordingly the true distribution meanμ=μ 0 +Δ, where Δ>0. In this case, test statistics Z 0 will have normal distribution N(Δ√n/σ;1), i.e. will be shifted to the right by Δ√n/σ (see. example file on Beta sheet).

According to the definition, Type II error equal to the probability, accept the null hypothesis if H 1 is actually true. This probability corresponds to the area highlighted in the figure. Statistics Z 0 , in this case, will take a value between -Z α/2 and Z α/2 (these values ​​correspond to the boundaries confidence interval). Z α/2 is .

Let's define type II error in terms standard normal distribution:

This expression will also work for Δ<0. Как видно из выражения, Type II error is a function of α, Δ and n. IN example file on the Beta sheet you can quickly calculate β and test power depending on these parameters. The diagram above will be automatically rebuilt.

For a given value of α, a family of curves is often constructed that illustrate the dependence errors of the second type from Δ and n. Such curves are called operational characteristics(Operating-characteristic curves).

As can be seen from the figure, the further the true value average from μ 0, i.e. the larger Δ, the smaller error of the second type. Thus, for given α and n, the test will more easily detect large deviations from average than small ones (the test has, in this case, a larger power). As n increases test power is also growing.

When an error occurs in Panasonic air conditioners, they turn off and the timer LED on the panel begins to blink. If the system is multi-split, then for each indoor unit you need to read the error codes separately.

Error codes for household air conditioners

H00 - No problems recorded

H11 - There is no communication between the indoor and outdoor units, the control board is faulty

H12 - discrepancy between the total power of the indoor units and the outdoor one

H14 - air sensor closed/broken

H15 - open or short circuit compressor temperature sensor

H16 - low current consumption by the external unit - not enough freon, open circuit in the current transformer circuit of the outdoor unit board, IPM power module has failed

H17 - open or short circuit temperature sensor on the refrigerant suction pipe

H19 - jamming of the fan motor of the indoor unit - motor, board or wire connectors.

H21 - the drainage is clogged or the float sensor is faulty

H23 - evaporator temperature sensor N1 is closed/broken

H24 - evaporator temperature sensor N2 is closed/broken

H25 - the ionization unit or the internal board is faulty

H26 - ionizer

H27 - outside air temperature sensor is closed/broken

H28 - condenser temperature sensor N1 is closed/broken

H30 - discharge temperature sensor is closed or broken

H32 - temperature sensor at the condenser outlet is shorted or broken

H33 - interconnect error

H34 - power module radiator temperature sensor is closed/broken

H35 - drainage clogged, pump malfunction (the resistance of the pump motor windings is about 200 Ohms)

H36 - outdoor unit gas tube temperature sensor is closed/broken

H37 - temperature sensor of the liquid tube of the outdoor unit is closed/broken

H38 - mismatch between external and external units

H39 - wires and freon circuits are mixed up (multi-split systems), the solenoid valve of the corresponding outdoor unit is faulty

H41 - inconsistency in connecting wires and freon pipes

H50 - fan motor or board is faulty

H51 - nozzle clogged (AC Robot)

H52 - Limit switch fault (AC Robot)

H58 - Patrol Sensor unit malfunction

H64 - high pressure sensor malfunction

H97 - compressor motor, indoor unit board is faulty

H98 - protection of the indoor unit from overheating in heat mode (high pressure), insufficient heat removal from the heat exchanger of the indoor unit, sensor malfunction

H99 - evaporator freezing

F11 - incorrect operation of the four-way valve

F17 - freezing of the indoor unit in standby mode, the error appears on the unit on which the fact of freezing was detected

F90 - break in compressor windings, difference in winding resistance, inverter board malfunction

F91 - incorrect operation of the refrigeration circuit, low pressure protection

F93 - break in the compressor windings, malfunction of the inverter board

F94 - protection for excess discharge pressure

F95 - overheating of the outdoor unit heat exchanger

F96 - overheating of the power module, silt for cartoons - the thermal tablet is not triggered

F97 - high compressor discharge temperature, compressor overheating

F98 - protection based on total current consumption

F99 is an error in the DC protection system, possible causes are jammed compressor, failure of the transistor module, malfunction of the current sensor on the external unit board, the resistance of the compressor windings is below normal.

Error codes for semi-industrial air conditioners:

• cassette
• channel
• columnar
• subceiling

Reading error codes for Panasonic air conditioners

In different models of Panasonic air conditioners, there are different ways to read error codes, but in any case, the timer indicator on the indoor unit starts blinking. Let's look at ways to determine error codes in order:

First way:

There is a "check" button on the remote control

It is located in a small diameter hole to prevent false pressing. To read errors, you need to press and hold it for 5 seconds. The display will change from temperature values ​​to error codes.

After this, we point the remote control towards the indoor unit of the air conditioner and use the “up” and “down” timer buttons to scroll through the error log; when the error you are looking for is displayed on the screen, the air conditioner will emit a sound signal. The log must be scrolled through completely from error H11 to F99, or better yet, twice.

Second way

There is no "check" button on the remote control

In this case, press and hold the “up” timer setting key for 5 seconds. In this case, the remote control also goes into error code reading mode.

After this, briefly press the same button, scrolling through the errors; when the one we need is displayed, the indoor unit will emit a sound signal. We scroll through the log completely and read all the errors.

Then we look at their transcript here.

After one minute has elapsed, if there were no presses on the remote control buttons, it will return to its original state.

Third way

There is an indicator panel on the indoor unit of the air conditioner. If an error occurs, the air conditioner will stop, and an error code will be displayed on the panel, which you just have to look at and find its meaning in the table of error codes.

For multi-split systems (when there is one external unit and several internal ones), it is necessary to look at the errors on each internal unit.

Air conditioners, audio and video equipment, digital cameras, microprocessor equipment - almost all types of household and professional equipment related to the use of electronic technologies - all this is included in the range of products manufactured by the Panasonic Corporation. Over the past decades, its activity has achieved such stability of quality and reliability that this brand is mentally associated with the words “Japanese quality”, but the path to such popularity was long and thorny.

In 1918, the young and energetic future head of the world-famous corporation Konosuke Matsushita opened the Matsushita Denki company, which was engaged in the manufacture of electrical sockets and sockets (including double sockets of its own design). A few years later, the production of bicycle lamps of an original design was launched, which began the rise in the company’s popularity. In 1983, the Panasonic logo first appeared, assigned to the first home computer model released, and three years later, this logo became a full-fledged trademark along with National and Technics, also owned by Matsushita Electric Industrial Company. Since 2008, the corporation bears the name Panasonic Corporation, and all the manufacturer’s products are assigned the Panasonic TM. Over the last 25 years of the last century, the corporation opened production in Malaysia, China, and the USA, and created hundreds of official representative offices in almost all countries of the world.

The range of air conditioners manufactured by the company consists of more than two dozen models, divided into categories: economy class, business class, HI-END, multi-split systems. Economy class air conditioners are represented by Standart models, which have a low cost and fairly high performance. As new products for 2011, we can note the wall-mounted air conditioners CS/CU-YW7MKD, CS/CU-YW12MKD, CS/CU-Y12MKD, which work both for cooling and heating the room, and are equipped with filters to clean the air from dust.

Inventory air conditioners CS/CU-E7MKD, CS/CU-E9MKD, CS/CU-12MKD, equipped with a Patrol Sensor system that responds to the degree of dust in the air, as well as a plasma filter, with a low (up to 21 db) noise level, are becoming increasingly in demand in the market. . The Deluxe series has been updated with business class models CS/CU-W7MKD and CS/CU-W9MKD with low noise levels and a built-in Patrol Sensor. CS/CU-HE9MKD devices are even less noisy - the noise level during their operation does not exceed 20 db. These split systems are also new for 2011.

The window air conditioners developed by the company's specialists are equipped with a remote control, have a 2-speed operating mode for both cooling and heating the room, and a built-in condensate spray system (for models with only a cooling mode) increases operating efficiency and eliminates the need to use a drain tube. This group includes household air conditioners CW-C51LE (-XC51E), CW-C240KE, designed to cool a room of up to 15 - 70 m², depending on the model.

Cassette air conditioners (CS-E15DB4W and other models) are equipped with a new external unit that allows the connection of up to 3 internal units. A distinctive feature is the use of a filter with a resource increased to 2500 hours (before the next cleaning) and, as an option, a built-in ultrasonic air purification system.

Floor-ceiling air conditioners CS-A12CTP, CS/CU-E15DTEW (Inverter) are distinguished by their versatility, and they can quite rightly be classified as a group of mobile air conditioners. Due to its small thickness, when operating as a floor-mounted air conditioner, the device takes up no more space than a standard heating radiator. When used as a ceiling air conditioner, the walls remain free from split system elements, and the operation of inverter devices, due to their low noise level and lack of vibration, increases comfort during use, helps to increase service life and ensure operational safety.

Of particular note is the company's warranty policy. The warranty period for compressors is 5 years, for air conditioners installed by an authorized Panasonic installation center - 3 years. Even if the installation is carried out by unauthorized third-party installers (but without violating the installation recommendations), the company's products are provided with a 12-month warranty.

Since the result of a statistical test of the null hypothesis is either to reject it or not to reject it, two types of errors are possible. First, the null hypothesis can be rejected when it is true. Secondly, it can be accepted when it is incorrect. These two errors are called respectively error of the first kind And error of the second type, or error α And mistakeβ, since the letters α and β denote the probabilities associated with the occurrence of these errors. The two types of errors are not complementary (ie α + β ≠ 1).

To illustrate each type of error and to demonstrate that their probabilities are not complementary to each other, consider a legal analogy. Since, according to criminal law, any person is innocent until proven guilty, the judge and jury always test the hypothesis of innocence. In fact, the defendant can be either guilty or innocent, but based on the evidence, the court can come to any verdict, regardless of the true situation. The possibilities are presented in table 2.4.1. If the defendant is innocent and the jury finds him not guilty, or if he is guilty and the jury finds him guilty, they make the right decision. If, however, the defendant is truly innocent and the jury finds him guilty, then they commit an error, as if the defendant is guilty but is found not guilty. The jurors are forced to go one way or the other, and therefore the probabilities of their decisions must add up to 1 along the vertical table. Thus, if we denote by a the probability of incorrectly identifying a person as guilty when that person is innocent, then the difference 1-α should be the probability of correctly identifying him as guilty. Similarly, β and 1-β represent the probabilities of being found innocent and guilty when the defendant is guilty. It is intuitively obvious that the sum of α+β does not equal 1, although further discussion will show that β should increase as α decreases when everything else remains the same. Since our society is generally of the opinion that declaring an innocent person guilty is a more serious mistake than declaring a guilty person innocent, in the system of jurisprudence they strive to reduce the mistake as much as possible, which is realized in the requirement of proof of guilt "without beyond any reasonable doubt."

Table 2.4.1.

Legal Analogy Illustrating Error of Decision

Table 2.4.2 presents a general approach to studying the relevant situation. Just as the jury does not know the true status of the accused, the researcher also does not know the true situation regarding the null hypothesis he has accepted. The parallel to the researcher's dilemma in terms of the jury's situation is that he, too, is limited by the information at his disposal. Assume that the null hypothesis is true. If the researcher concludes that it is false, he or she makes a Type I error (α error). The level of significance associated with the statistical test indicates the probability with which this error can be made. Since sample information is always incomplete in some respect, there will still be room for some error a. The only way to avoid it is to never reject the null hypothesis (never find anyone guilty, to return to the legal analogy). Trust level statistical testing is represented by the difference 1 – α, and the more confidence we want to achieve in the statistical result, the lower the error value α should be set. Power, associated with statistical testing is the probability of correctly rejecting an incorrect null hypothesis. One-way tests are more powerful than two-way tests because, given the same error, they are simply more likely to lead to the rejection of an incorrect null hypothesis. Error β is the probability that an incorrect null hypothesis will not be rejected. There is no single value that is associated with the error β.

Table 2.4.2.

Types of errors when testing hypotheses

Chapter 3. Parametric criteria