CN103032934A - Automatic control method of air conditioner - Google Patents

Abstract

The invention provides an automatic control method of an air conditioner. The indoor environment is controlled in combination with current environmental temperature and humidity, so that a most comfortable and most healthy indoor environment is created. The air conditioner comprises a humidifier; an indoor unit of the air conditioner is provided with a temperature sensor; and the humidifier is provided with a humidity sensor. The method comprises the following steps of: in the running process of the air conditioner, automatically judging whether the indoor environmental temperature is consistent with the requirement of a comfortable temperature range, and if so, controlling the indoor humidity by using the air conditioner till an indoor environment reaches an optimal humidity range; if the indoor environmental temperature is lower than a comfortable temperature range value, judging the humidity and controlling the humidifier to start up or shut down to maintain the indoor environment at a higher humidity level; controlling the environmental temperature to rise gradually by using the air conditioner to reach the comfortable temperature range; and if the initially-judged indoor environmental temperature is higher than the comfortable temperature range value, starting the dehumidifying mode of the air conditioner to maintain the indoor environment in a lower humidity range, and lowering the running temperature to meet the requirement of comfort of the indoor environment.

Description

Automatic air conditioner control method

FIELD

[0001] The present invention belongs to the technical field of the control method of an air conditioner, particularly to a method for automatically controlling an air conditioner. Background technique

[0002] As the saying goes: ". Winter and spring dry, wet summer and autumn do not quit wet most comfortable" This is manifested in the north country is very obvious. And it is closely related to air dry and wet atmospheric humidity. The so-called atmospheric humidity refers to the degree of moist air, which indicates the degree of atmospheric water vapor content at the time from a saturated atmosphere, with generally expressed as a percentage relative humidity Dui atmospheric humidity size. Air humidity has a direct impact on human health.

[0003] Under certain conditions of temperature, relative atmospheric humidity Dui smaller, the faster evaporation of water vapor; conversely, the larger the air humidity, water evaporates more slowly. In real life, people, winter and spring, the air will feel dry, hot summer weather phenomenon, which is due to changes in atmospheric humidity at work. Amount of heat lost in humans, depending on the degree of saturation of the moisture in the air, generally saturated air 37 ° C difference is called saturation difference physiology, its people evaporation during breathing is important.

[0004] Under different conditions of humidity, body cooling method is not the same. Of course, it affects human health, are common in humidity and temperature play a role. In cool, damp weather, due to the evaporation of water vapor in the atmosphere absorbs heat radiation of the body, the body is easy to feel cold and cold; in hot and humid weather, atmospheric water vapor will hinder the body's surface evaporation, which affects the human body cooling process, if sweat is not timely, people will heat stroke. Dui phase if the humidity reaches 80% or more, it will prevent people body heat by evaporation, suffering from kidney disease, tuberculosis, chronic disease, waist and legs of the people will have adverse effects. In the winter, low temperatures (such as our country's southern region), moist air is easy to get rheumatism and bronchitis. While the air humidity in the atmosphere is too small will result in dried human skin and the like. In particular, people in long-term outdoor, field work, chapped hands and feet are particularly vulnerable to the phenomenon. In fact, people feel most comfortable weather conditions are the atmospheric temperature at 22-25 ° C, relative humidity of 50% for the best, that is the best fall season in Beijing.

[0005] To this end, whether it is hot summer, or dry and cold winter, people should always pay attention to the weather and atmospheric humidity changes, timely adjust the humidity changes, for human health are of great significance.

[0006] The control method of the prior art relates to an air conditioner, the cooling and heating functions are controlled in accordance with a single ー temperature, the humidity and temperature do not combine. Humidity in a manner directly or indirectly affect the comfort of people at a certain temperature, so reducing humidity occupants feel colder, drier and more comfortable feel for the fabric but smoother and more comfortable. For ー a sedentary people, when the RC temperature, 30% relative humidity Dui, heat sensation of thermal equilibrium have the same effect. Dimensionless, merely controlled air conditioner according to the temperature, still can not reach the ideal climate comfort effect.

SUMMARY

[0007] The object of the present invention to provide an automatic air conditioner control method, with the current ambient temperature and humidity of the indoor environment is controlled to achieve the most comfortable and healthy indoor environment.

[0008] The present invention is achieved by the following technical solution:

[0009] automatic control method for an air conditioner, wherein the air conditioner includes a humidifier, air conditioner of the machine is provided with a temperature sensor, a humidity sensor is provided with the humidifier; inch running the air conditioner, if the indoor temperature is automatically determined comfort temperature range meet the requirements, such as compliance, the indoor air-conditioner indoor humidity environment optimum humidity range; ambient temperature is below a comfortable indoor temperature range value, the humidity is determined, the operation start and stop control of the humidifier, so that the indoor environment is maintained at a high humidity level; air-conditioner control and ambient temperature gradually increased to reach a comfortable temperature range; as initially determined comfortable indoor temperature is higher than the ambient temperature range of values, the air conditioner starts the appropriate dehumidification mode, so that indoor humidity is maintained in the lower range, and then to meet the comfort requirements of the indoor environment by reducing the operating temperature.

[0010] Advantageous effects of the present invention are as follows:

[0011] The method for automatically controlling an air conditioner according to the present invention, consider not only the remote controller of the set temperature, combined with the current ambient temperature and humidity controlled indoor environment, eliminating the need for frequent remote control operation, to achieve the most comfortable and healthy indoor environment. Users only need to boot a given operating temperature, the control program starts automatically adjust the indoor temperature and humidity is automatically adjusted within the comfort range, to ensure the comfort of the person in the room. Be compensated by an appropriate humidity control temperature caused discomfort, and then to adjust the indoor temperature by increasing or decreasing the operating temperature. The combination of temperature and humidity regulation of the indoor environment, indoor environment more comfortable and healthy.

BRIEF DESCRIPTION

[0012] FIG. 1 is a heating process conditions Ester automatic air conditioner control method according to the present invention, a schematic view;

[0013] FIG. 2 is a schematic flowchart of the automatic refrigerant Ester condition control method of an air conditioner of the present invention.

Detailed ways

[0014] The present invention discloses a method for automatically controlling an air conditioner ー species, wherein the air conditioner includes a humidifier, air conditioner of the machine is provided with a temperature sensor, a humidity sensor is provided with the humidifier; inch running the air conditioner, automatically determine whether the ambient temperature indoor comfort temperature range requirements, such as compliance, the indoor air-conditioner indoor humidity environment optimum humidity range; ambient temperature is below a comfortable indoor temperature range of values, it is determined humidity, the humidifier control start and stop operation, the indoor environment is maintained at a high humidity level; air-conditioner control and ambient temperature gradually increased to reach a comfortable temperature range; as initially determined comfortable indoor temperature is higher than the ambient temperature range of values, the air conditioner starts corresponding dehumidification mode, the indoor environment is maintained within a low humidity range, and to meet the comfort requirements of the indoor environment by reducing the operating temperature.

[0015] Please see FIG. 1 to FIG. 2, the automatic heating control method of the present invention, an air conditioner, the refrigerant flow conditions Ester schematic drawings in which:

[0016] T cycloalkyl - ambient temperature;

[0017] Ts-- set temperature, i.e. the temperature set by the user or the remote control was last used temperature;

[0018] Tg-- operating temperature and humidity data set in real time according to the indoor temperature;

[0019] Tftmin- heating comfort temperature range minimum value;

[0020] Tamax-- heating comfort temperature range of the highest value;

[0021] IVmin ~ comfort temperature range as low refrigerant;

[0022] I ^ max-- refrigerant temperature range comfortable maximum value;

[0023] Small - indoor relative humidity;

[0024] (J) is provided to set the relative humidity value;

[0025] t-- air conditioner running time.

[0026] As shown in FIG 1, the heating Ester case, the automatic control method of the air conditioner of the present invention comprises the steps of: [0027] I) start of air conditioner operation;

[0028] 2) The air conditioner reads the ambient temperature T a ring;

[0029] 3) determines whether the ambient temperature is less than the heating temperature range of the lowest value Tsmin comfort, and if so, proceeds to step 4), if not, proceeds to step 8);

[0030] 4) read the indoor relative humidity Dui small value;

[0031] 5) Analyzing Dui humidity environment is less than the first set of small Dui relative humidity value smaller, and if so, proceeds to step 6), if not, proceeds to step 7);

[0032] 6) the current operating temperature according to the set temperature of the heating operation, and turns on the humidifier, the humidifier automatically closed after time t2, and reads again relative humidity Dui small value;

[0033] 7) when the relative humidity is small San Dui Dui phase first set humidity value S1 inch smaller, according to the current operating temperature higher than the set temperature T 1 ° C is provided to the heating operation, and the read time after the ambient temperature Tjf h again ;

If [0034] 8) determines the heating temperature is greater than the highest value Tsmax comfort temperature range, and if so, proceeds to step 9), if not, proceeds to step 13);

[0035] 9) read the indoor relative humidity values ​​Dui small;

[0036] 10) determines Dui humidity environment is less than the second set with a small Dui small humidity values, if so, proceeds to step 12), if not, proceeds to step 11);

[0037] 11) When the relative humidity value read Dui San smaller second setting value S2 relative humidity less Dui inch, according to the current operating temperature 1 ° C lower than the set temperature the heating operation, and the temperature is again determined whether the current time t4;

[0038] 12) When a small value relative humidity Dui <second predetermined value smaller relative humidity Dui inch S2, the current operating temperature according to the set operating temperature of heating, and the humidifier is turned on, a small value humidity reading Dui phase 3 again after time in minutes ã ;

[0039] 13) reading the relative indoor humidity Dui small value;

[0040] 14) determines Dui humidity environment is less than the third set small relative humidity value Dui small, and if so, proceeds to step 16), if not, proceeds to step 15);

[0041] 15) When the relative humidity values ​​less San Dui third set value smaller relative humidity Dui S3, the current operating temperature in accordance with the set temperature heating operation, after time t6 minutes the temperature sensor reads the temperature again.

[0042] 16) When the relative humidity value of less Dui <Dui relative humidity third set value S3 inch small, the current operating temperature according to the set temperature of the heating operation, and the humidifier is turned on, the reading time t5 again relative humidity Dui small value.

[0043] As shown in FIG 2, the refrigerant Ester case, the automatic control method of the air conditioner of the present invention comprises the steps of:

[0044] SI air conditioner starts running;

[0045] S2 air conditioner reads the ambient temperature T a ring;

[0046] S 3 determines whether the ambient temperature is less than the minimum value of the refrigerant temperature range comfortable mo T in, and if so, enters a step S4, if not, proceeds to step S8;

[0047] S4 read indoor relative humidity values ​​Dui small;

[0048] S5 Dui humidity environment is determined whether a value smaller than a fourth set value relative humidity Dui small, and if so, enters step S7, if not, proceeds to step S6;

[0049] S6 when the relative humidity is small Dui> fourth setting a small value relative humidity Dui inch S4, the current operating temperature according to the set operating temperature of the refrigerant and the ambient temperature after time t7 Tjf read again;

[0050] S7 in accordance with the current operating temperature is higher than the set temperature Ts 1 ° C cooling operation, and turns on the humidifier, the humidifier automatically close after time t8, and again read a small value relative humidity Dui; [0051] S8 determines whether the ambient temperature cooling comfort temperature range greater than the highest value Tsmax, if so, entering step S9, if not, proceeds to step S13;

[0052] S9 reads the small indoor relative humidity values ​​Dui;

[0053] SlO Dui humidity environment is determined whether a small value greater than the fifth set value relative humidity Dui small, and if so, to enter step S12, if not, proceeds to step Sll;

[0054] Sll currently operating according to a set temperature 1 ° C lower temperature cooling operation, and t1 (ambient temperature again read time T l loop;

[0055] S12 the current operating temperature according to the set temperature of the cooling operation and the dehumidifying mode is turned on, the reading time t9 Dui again with small humidity value;

[0056] S13 reads the small indoor relative humidity values ​​Dui;

[0057] S14 Dui humidity environment determination value is smaller is smaller than a sixth set small relative humidity Dui value, if so, to enter step S15, if not, proceeds to step S16;

[0058] S15 the current operating temperature according to the set temperature of the cooling operation and the dehumidifying mode is turned on, the time TN after the humidifier close, read again the value of relative humidity Dui small;

[0059] S16 determines Dui humidity environment is greater than the seventh set value is small relative humidity Dui small value, which is greater than a small set 6 small S7, and if so, to enter step S17, if not, proceeds to step S18;

[0060] S17 the current operating temperature according to the set temperature of the cooling operation and the dehumidifying mode is turned on, the reading time t12 again with small Dui humidity value;

[0061] S18 the current operating temperature according to the set temperature 1 ° C lower cooling operation, and after the time t13 again read ambient temperature

& _ T loop.

Specific Example [0062] Please see FIG. 1 to FIG. 2, the air conditioner of the present invention, a method for automatic control:

[0063] Figure 1, under a heating condition Ester:

[0064] AUTO key is pressed, the air conditioner starts to operate, the user input ー temperature values ​​on the remote controller as a set temperature, or the operating temperature of the last memory on the remote control as a setting temperature; temperature sensor readings ambient temperature, then the temperature value judgment:

[0065] When the ambient temperature <18 ° C: reading Dui phase humidity, when the temperature and humidity Dui phase value <65% inch, according to the current operating temperature of the remote memory temperature, i.e. the temperature of the last used or set by the user operation, and the humidifier is turned on; off automatically after ten minutes the humidifier, humidity and read again Dui phase; Dui phase when the humidity> 65%, the current operating temperature according to the set temperature i.e. remote memory 1 ° C higher temperature runs, after 15 minutes and again read the ambient temperature;

[0066] When the ambient temperature is between [18, 24]: humidity reading Dui phase, when the relative humidity values ​​Dui <50%, the current operating temperature in accordance with the set temperature, i.e. the temperature of the remote operating memory, and the humidifier is turned on, after 10 minutes turn off the humidifier, humidity again read Dui phase; Dui phase when the humidity of> 50% according to the current operating temperature of the set temperature, i.e. the temperature of the remote memory operation, after 15 minutes the temperature sensor reads the temperature again;

[0067] When the ambient temperature> 24 ° C: reading current humidity, when the humidity value <40% inch, the current operating temperature according to the set operating temperature, and the humidifier is turned on, again 10 minutes after the humidity reading; when read humidity values> 40% inch, operating according to the current operating temperature lower than the set temperature 1 ° C, and after 15 minutes the current temperature is determined once again.

[0068] As shown in FIG 1, the cooling conditions Ester:

[0069] press the auto button, the program starts running. A temperature sensor reads the ambient temperature, and then determining the temperature range of values: [0070] When the ambient temperature <23 ° C: humidity values ​​read Dui phase, when the relative humidity value Dui <60% inch, than the current operating temperature according to the setting you high operating temperature 1 ° C, and the humidifier is turned on; after ten minutes the humidifier automatically closed, again and relative humidity reading; Dui phase when the humidity is> 60%, the current operating temperature according to the set temperature, i.e. the temperature of a remote controller to operate the memory , and 15 minutes after re-reading the ambient temperature;

[0071] When the ambient temperature is between [23, 28]: humidity reading Dui phase, when the relative humidity values ​​Dui <40%, the current operating temperature in accordance with the set temperature, i.e. the temperature of the remote operating memory, and the humidifier is turned on, after 10 minutes turn off the humidifier, humidity again read Dui phase; Dui phase when the humidity is> 60%, the current operating temperature in accordance with the set temperature, i.e. the temperature of the remote memory operation, and opens the dehumidification mode, the humidifier off after 10 minutes, again reading Dui phase takes humidity; Dui phase when the humidity is between [40, 60], according to the current operating temperature of the set temperature, i.e. the temperature of the remote memory operation, after 15 minutes the temperature sensor reads the temperature again;

[0072] When the ambient temperature> 28 ° C: reading current humidity, when the humidity value> 40% inch, the current operating temperature according to the set operating temperature, and opens the dehumidification mode, the humidity is read again after 10 minutes; when reading the humidity value <40% inch, operating according to the current operating temperature lower than the set temperature 1 ° C, and after 15 minutes the current temperature is determined once again.

[0073] The above-described embodiment, the various operation time (e.g. 10 minutes or 15 minutes in the program), is preferred a reasonable time, due to the different conditions Ester, can be changed according to the actual situation.

[0074] process air conditioner is running, any time the user presses the off button, the air conditioner that is the end of the run, otherwise the automatic cycle has been run.

[0075] The specific implementation of the listed non-limiting embodiment, those skilled in the art, various modifications and changes without departing from the scope of the invention, carried out, belong to the scope of the present invention.

Claims (6)

A method for automatic control of the air conditioner, characterized in that: the air conditioner includes a humidifier, air conditioner of the machine is provided with a temperature sensor, a humidity sensor is provided with the humidifier; run the air conditioner, the indoor temperature is automatically determined meets comfort temperature range requirements, such as compliance, the indoor air-conditioner indoor humidity environment optimum humidity range; ambient temperature is below a comfortable indoor temperature range of values, it is determined humidity, the humidifier controls start and stop operation, the indoor environment is maintained at a high humidity level; air-conditioner control and ambient temperature gradually increased to reach a comfortable temperature range; as initially determined comfortable indoor temperature is higher than the ambient temperature range of values, the air conditioner starts the appropriate dehumidification mode, the indoor environment is maintained within a low humidity range, and to meet the comfort requirements of the indoor environment by reducing the operating temperature.

Analyzing 3); 1) start of air conditioner operation; 2) air conditioner temperature reading Tjf: 2. The method for automatic control of the air conditioner as claimed in claim 1, wherein: the heating condition, comprising the steps of ambient temperature is less than the heating value of the lowest temperature range comfortable Iftmin, if so, proceeds to step 4), if not, proceeds to step 8); 4) to read the indoor relative humidity is small; 5) determines the relative humidity is less than a first value of 0 relative humidity value 0 is set, and if so, proceeds to step 6), if not, proceeds to step 7); 6) the current operating temperature according to the set operating temperature of heating, and turns on the humidifier, the humidifier automatically turn off after time t2, and again small values ​​of relative humidity reading; 7) when the relative humidity 0> first setting value of relative humidity, in accordance with the current operating temperature set higher than the set temperature T 1 ° C to the heating operation, and the read time environment again h temperature Tjf; 8) determines whether the ambient temperature is greater than a heating temperature range of the highest comfort Iftmax, if so, proceeds to step 9), if not, proceeds to step 13); 9) reading the small indoor relative humidity; 10) determining the relative humidity of the environment the second value is smaller than 0 Given relative humidity value, and if so, proceeds to step 12), if not, proceeds to step 11); 11) when the relative humidity value read 0> a second set value smaller ... when the relative humidity, according to the current operating temperature than the set temperature low 1 ° C heating operation, and the temperature is again determined whether the current time t4; 12) when the relative humidity value 0 <a second set value smaller ... when the relative humidity, the current operating temperature according to the set operating temperature of the heating and humidifying open , a read again after time t3 minutes relative humidity value is small; 13) reads the small indoor relative humidity; 14) determines the relative humidity value 0 is smaller than the third set relative humidity value 0, and if so, proceeds to step 16), if not, the routine proceeds to step 15); 15) ... small relative humidity, the operating temperature according to the set operating temperature of the heating current when the relative humidity value 0> third set time t6 minutes after the temperature sensor reads the temperature again. 16) 0 <a third set value smaller ... when the relative humidity, the current operating temperature according to the set temperature of the heating operation when the relative humidity value, and the humidifier is turned on, after time t5 relative humidity value read again small.

The automatic air conditioner control method according to claim 2, wherein: the refrigerant operating condition, comprising the steps of: the SI start of air conditioner operation; S2 to read the air conditioner ambient temperature Tjf; S3 determines whether the ambient temperature is less than cooling comfort temperature range as low as T ^ in, and if so, enters a step S4, if not, proceeds to step S8; S4 indoor relative humidity reading value is smaller; S5 Analyzing relative humidity value is less than the fourth set relative humidity value, and if so, into the step S7, if not, proceeds to step S6; S6 when the relative humidity 0> 0 relative humidity fourth set S4, the current operating temperature according to the set operating temperature of the refrigerant, and read again after time t7 ambient temperature T a ring; S7 in accordance with the current operating temperature higher than the set temperature Ts 1 ° C cooling operation, and turns on the humidifier, the humidifier automatically close after time t8, and reads again the value of the relative humidity less; S8 determines whether the ambient temperature is greater than the refrigeration temperature range up to a comfortable value Iftmax, if so, entering step S9, if not, proceeds to step S13; S9 ​​indoor relative humidity reading value is smaller; SlO Analyzing the relative humidity value is greater than the fifth set Given relative humidity value, and if so, to enter step S12, if not, proceeds to step Sll; Sll currently running operating temperature of the refrigerant in accordance with the set temperature TC is low, and t1 (ambient temperature again read time T l loop; S12 according to the current operating temperature the set temperature of the cooling operation and the dehumidifying mode is turned on, read again after time t9 small values ​​of relative humidity; indoor relative humidity value S13 to read small; S14 Analyzing relative humidity value is less than the sixth set relative humidity value, and if so, enter step S15, if not, proceeds to step S16; S15 current operating temperature according to the set temperature of the cooling operation and the dehumidifying mode is turned on, the time TN after the humidifier close, read again the value of the relative humidity less; S16 determines whether the relative humidity is greater than 0 a seventh set relative humidity value 0, where 0 is greater than a small s · 6, and if so, to enter step S17, if not, proceeds to step S18; S17 current operating temperature according to the set temperature of the cooling operation and the dehumidifying mode is turned on after the time t12 again small values ​​of relative humidity reading; S18 currently operating according to the set operating temperature 1 ° C lower temperature refrigeration, and ambient temperature is read after the time t13 again ◦ T ring

The automatic air conditioner control method according to claim 2, wherein: the heating conditions: Press the auto key, the air conditioner starts to operate, the user inputs a temperature value set on the remote controller as a temperature, the operating temperature of the last or the memory on the remote control as a setting temperature; the temperature sensor reads the ambient temperature, and then determining the range of the temperature: when the ambient temperature <18 ° C: relative humidity reading, when the relative humidity <65%, the current operating temperature according to the temperature of the remote memory, i.e., the last-used temperature, or the temperature set by the user operation, and opens the humidifier; humidifier automatically close in ten minutes, and read again relatively humidity; when the relative humidity is> 65%, i.e., the current operating temperature in accordance with the remote controller memory 1 ° C higher temperature than the set temperature to run and read the ambient temperature for 15 minutes again; when the ambient temperature in [18, 24] of the when the room: relative humidity reading, when the relative humidity <50%, the current operating temperature in accordance with the set temperature, i.e. the temperature of the remote memory operation, and turns on the humidifier, the humidifier off after 10 minutes Read again relative humidity; when the relative humidity is> 50%, the current operating temperature in accordance with the set temperature, i.e. the temperature of the remote memory operation, after 15 minutes the temperature sensor reads the temperature again; when the ambient temperature> 24 ° C: reading current humidity, when the humidity value <40%, the current operating temperature according to the set operating temperature, and the humidifier is turned on, to read again after 10 minutes the humidity; the value read when the humidity> 40%, the ratio is set in accordance with the current operating temperature temperature 1 ° C lower predetermined operation, and after 15 minutes the current temperature is determined once again.

An automatic control method according to an air conditioner according to claim 4, wherein: Cooling conditions: Press the auto key, the air conditioner starts to operate, the temperature sensor reads the ambient temperature, and then determines the range of temperature values: when the ambient temperature <23 ° C: relative humidity reading, when the relative humidity value <60%, the current operating temperature according to the set operating temperature is higher than rc you, and turn on the humidifier; ten minutes after the humidifier automatically shut down, and re-read the relative humidity; when the relative humidity of> 60%, the current operating temperature according to the set temperature, i.e. the temperature of memory to run a remote controller, and 15 minutes after re-reading the ambient temperature; ambient temperature is between [23, 28]: relative humidity reading, when the relative humidity <40%, the current operating temperature in accordance with the set temperature, i.e. the temperature of the remote memory operation, and turns on the humidifier, the humidifier off after 10 minutes again relative humidity reading; when the relative humidity of> 60%, the current operating temperature in accordance with the set temperature, i.e. the temperature of the remote memory operation, and opens the dehumidification mode, the humidifier off after 10 minutes, and then Relative humidity reading; when the relative humidity is between [40, 60], according to the current operating temperature of the set temperature, i.e. the temperature of the remote memory operation, after 15 minutes the temperature sensor reads the temperature again; ambient temperature> 28 ° C when : read current humidity, when humidity> 40%, the current operating temperature according to the set operating temperature, and opens the dehumidification mode, the humidity is read again after 10 minutes; when the humidity value is read <40%, the current operating temperature operating according to 1 ° C lower than the set temperature, and after 15 minutes the current temperature is determined once again.

The automatic control method of an air conditioner as claimed in claim 5, characterized in that: the air conditioner during operation, any time a user presses the off button, i.e. the end of the run the air conditioner, or automatic cycle has been run.