CN109323374B - Air conditioner controller and control method - Google Patents
Air conditioner controller and control method Download PDFInfo
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- CN109323374B CN109323374B CN201710617214.7A CN201710617214A CN109323374B CN 109323374 B CN109323374 B CN 109323374B CN 201710617214 A CN201710617214 A CN 201710617214A CN 109323374 B CN109323374 B CN 109323374B
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Abstract
The invention discloses an air conditioner controller, wherein an outdoor unit control module comprises an outdoor unit controller and an outdoor unit power module, a live wire and a zero wire are respectively connected with the indoor unit power module and the outdoor unit power module, the indoor unit controller is connected with a strong current zero-crossing detection circuit, the strong current zero-crossing detection circuit is also connected with the live wire and the zero wire, a live wire disconnecting device is arranged on the indoor unit controller, and the live wire disconnecting device can disconnect the live wire from the outdoor unit power module under the indoor unit controller. The invention has the beneficial effects that: (1) the power consumption of the outdoor unit control module is reduced when the air conditioner is in a standby state; (2) the power consumption of the indoor unit control module is reduced when the air conditioner is in standby.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner controller and a control method.
Background
The air conditioner controller is divided into an indoor control module and an outdoor control module, the indoor control module and the outdoor control module are respectively provided with a power supply module, in order to respond the national energy-saving requirement, a linear power supply of an indoor unit is changed into a switching power supply by a plurality of existing air conditioner enterprises to reduce the standby power of the power supply module, although the standby power consumption of the power supply of the indoor unit is reduced by the existing method, the circuit of the switching power supply output voltage stabilizing module of the indoor unit is still fully reduced in voltage and large in power consumption in the standby state, and the MCU weak current communication transmitting ports of the second, the inner and the outer units are in the normal working state; thirdly, the power supply module part of the outer panel still works and forms a current loop communication module circuit with the inner panel; and fourthly, strong-current zero-crossing detection modules and the like are available, the power consumption of the modules is large, and in the case of a 1.5-P air conditioner, the standby power consumption is usually about 2W, which is a large energy waste. For these working modules with relatively large power consumption, the air conditioning industry has not yet been completely solved.
The present invention has been made in view of the above reasons.
Disclosure of Invention
An object of the present invention is to provide an air conditioner controller and a control method thereof, which can reduce the standby power of the air conditioner.
Specifically, the invention is realized by the following technical scheme:
the utility model provides an air conditioner controller, includes indoor set control module and outdoor set control module, indoor set control module includes indoor set controller and indoor set power module, outdoor set control module includes outdoor set controller and outdoor set power module, and live wire and zero line are connected with indoor set power module and outdoor set power module respectively, indoor set controller and forceful electric power zero cross detection circuit connection, forceful electric power zero cross detection circuit still is connected with live wire and zero line set up live wire disconnecting means on the indoor set controller, live wire disconnecting means can be under indoor set controller, disconnection live wire and outdoor set power module's connection.
Preferably, the live wire disconnecting device is also capable of disconnecting the live wire from the strong current zero crossing detection circuit.
Preferably, the live wire disconnecting device is an electromagnetic relay.
Preferably, a voltage clamping circuit is arranged between a power supply line of the indoor unit power module for supplying power to the indoor unit controller and a low-power-consumption control port of the indoor unit controller.
Preferably, the voltage clamping circuit comprises a first resistor, a second resistor, a third resistor, a first zener diode, a second zener diode, a first capacitor, a second capacitor and an optocoupler; one end of the first resistor is connected with a power supply line, and the other end of the first resistor is respectively connected with the cathode of the optocoupler, the cathode of the first voltage stabilizing diode and the cathode of the second voltage stabilizing diode; one end of the second resistor is connected with the anode of the first voltage stabilizing diode, and the other end of the second resistor is connected with the low-power consumption control port; one end of the third resistor is connected with the anode of the second voltage stabilizing diode, and the other end of the third resistor is grounded; the first capacitor and the second capacitor are connected in series to form a series connection body, one end of the series connection body is connected with an emitting electrode of the optocoupler, and the other end of the series connection body is grounded.
Preferably, an indoor unit weak current communication sending end of an indoor unit controller of the air conditioner controller is further connected with an indoor unit sending optocoupler module.
An air conditioner control method, the air conditioner using the air conditioner controller described before, the method comprising:
step 1: the air conditioner is initially powered on, an indoor unit power module works and enters a first power saving mode, and the first power saving mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to work and disconnects the live wire from the outdoor unit power supply module;
step 2: judging whether the air conditioner is started, if so, entering a first normal working mode, wherein the first normal working mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module; then executing step 3;
and step 3: and judging whether a shutdown signal is received or not, if so, delaying the preset time, and entering a first power saving mode after the outdoor compressor and the external fan equipment stop.
An air conditioner control method, wherein the air conditioner uses the air conditioner controller, and the method comprises the following steps:
step 1': the air conditioner is initially powered on, the indoor unit power module works and enters a second power saving mode, and the second power saving mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to work and disconnects the live wire from the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs a low level;
step 2': judging whether the air conditioner is started, if so, entering a second normal working mode, wherein the second normal working mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs high level; then step 3' is executed;
step 3': and judging whether a shutdown signal is received or not, if so, delaying the preset time, and entering a second power-saving mode after the outdoor compressor and the external fan equipment stop.
An air conditioner control method, wherein the air conditioner uses the air conditioner controller, and the method comprises the following steps:
step 1': the air conditioner is initially electrified, the indoor unit power module works and enters a third power-saving mode, and the third power-saving mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to work and disconnects the live wire from the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs a low level; the internal machine weak current communication sending end outputs low level;
step 2': judging whether the air conditioner is started, if so, entering a third normal working mode, wherein the third normal working mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs high level; the internal machine weak current communication sending end outputs high level; then step 3 "is executed;
step 3': and judging whether a shutdown signal is received or not, if so, delaying the preset time, and entering a third power-saving mode after the outdoor compressor and the external fan equipment stop.
The invention has the beneficial effects that: (1) the power consumption of the outdoor unit control module is reduced when the air conditioner is in a standby state; (2) the power consumption of the indoor unit control module is reduced when the air conditioner is in standby.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioner controller according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an air conditioner controller according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an air conditioner controller according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of a voltage clamp circuit configuration;
fig. 5 is a schematic structural diagram of an air conditioner controller according to a fourth embodiment of the present invention;
FIG. 6 is a schematic flow chart of a first air conditioner control method according to the present invention;
FIG. 7 is a flowchart illustrating a second method for controlling an air conditioner according to the present invention;
fig. 8 is a flowchart illustrating a third method for controlling an air conditioner according to the present invention.
Description of the reference numerals
To further clarify the structure and connection between the various components of the present invention, the following reference numerals are given and described.
A first resistor 1; a second resistor 2; a third resistor 3; a first zener diode 4; a second zener diode 5; a first capacitor 6; a second capacitor 7; and an optical coupler 8.
The technical scheme of the invention can be more clearly understood and explained by combining the embodiment of the invention through the reference sign description.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The present invention will be described in detail below by way of examples.
As shown in fig. 1, an air conditioner controller according to a first embodiment of the present invention includes an indoor unit control module and an outdoor unit control module, the indoor unit control module includes an indoor unit controller and an indoor unit power module, the outdoor unit control module includes an outdoor unit controller and an outdoor unit power module, a live wire and a zero line are respectively connected to the indoor unit power module and the outdoor unit power module, the indoor unit controller is connected to a strong current zero-crossing detection circuit, the strong current zero-crossing detection circuit is further connected to the live wire and the zero line, a live wire disconnecting device is disposed on the indoor unit controller, and the live wire disconnecting device can disconnect the live wire from the outdoor unit power module under the indoor unit controller. And a current loop circuit formed by a plurality of optical coupling modules is also arranged between the indoor unit control module and the outdoor unit control module and is used for communication between the indoor unit control module and the outdoor unit control module. The current loop circuit is arranged between the indoor unit control module and the outdoor unit control module, which belongs to the prior art, and the invention is not described in detail.
In the traditional air conditioner controller, when the air conditioner is in a standby state, the live wire is still connected with a strong current zero-crossing detection circuit on the indoor unit controller and is also connected with an outdoor unit control module, so that the strong current zero-crossing detection circuit still works, and the outdoor unit control module also works partially, and the working parts can generate a large amount of electric energy consumption. When the air conditioner is in a standby state, the indoor unit controller can send a working signal to the live wire disconnecting device, the live wire disconnecting device works to at least disconnect the live wire from the outdoor unit power supply module, so that the outdoor unit control module completely stops working, and the electric energy consumption of the air conditioner in the standby state is reduced.
Furthermore, the live wire disconnecting device can also disconnect the live wire from the strong current zero-crossing detection circuit, so that the strong current zero-crossing detection circuit does not work, and the standby electric energy consumption of the air conditioner is further reduced.
As shown in fig. 2, an air conditioner controller according to a second embodiment of the present invention is provided, and on the basis of the air conditioner controller according to the first embodiment of the present invention, the live wire disconnecting device is an electromagnetic relay. The live wire is sequentially connected to the strong current zero-crossing detection circuit and the outdoor unit power module through the electromagnetic relay switch, when the air conditioner is in a standby state, the indoor unit controller outputs high level to the electromagnetic relay, and the electromagnetic relay switch is disconnected, namely, the live wire is simultaneously disconnected from the outdoor unit power module and the strong current zero-crossing detection circuit.
Further, as shown in fig. 3, in an air conditioner controller according to a third embodiment of the present invention, based on the air conditioner controller according to the second embodiment of the present invention, the indoor unit controller is a control chip such as a single chip microcomputer, and has a low power consumption control port capable of outputting a low level, and a voltage clamp circuit is further disposed between a power supply line of the indoor unit power module for supplying power to the indoor unit controller and the low power consumption control port of the indoor unit controller. The voltage clamping circuit has the following functions: when the low-power-consumption control port outputs a low level, the voltage on the power supply line can be clamped to a lower potential, so that the power consumption of the indoor unit power supply module is reduced.
Specifically, as shown in fig. 4, the voltage clamping circuit may include a first resistor 1, a second resistor 2, a third resistor 3, a first zener diode 4, a second zener diode 5, a first capacitor 6, a second capacitor 7, and an optocoupler 8; one end of the first resistor 1 is connected with a power supply line, and the other end of the first resistor is respectively connected with the cathode of the optocoupler 8, the cathode of the first voltage-stabilizing diode 4 and the cathode of the second voltage-stabilizing diode 5; one end of the second resistor 2 is connected with the anode of the first voltage stabilizing diode 4, and the other end of the second resistor is connected with the low-power consumption control port; one end of the third resistor 3 is connected with the anode of the second voltage stabilizing diode 5, and the other end is grounded; the first capacitor 6 and the second capacitor 7 are connected in series to form a series connection body, one end of the series connection body is connected with an emitting electrode of the optical coupler 8, and the other end of the series connection body is grounded. The voltage on the power supply line connected with the voltage clamping circuit shown in fig. 4 is 12V, the low power consumption control port outputs low level in the standby state, the 7.5V voltage stabilizing diode is connected in series with the anode of the optical coupler of the output voltage of the switching power supply, and the control circuit is combined with the correlator, and the output 12V is clamped at about 8.5V in the standby state of the air conditioner, so that the power consumption of the indoor unit power module is reduced. Because the voltage drop at the two ends of the voltage stabilizing diode is 7.5V, when the low power consumption port outputs low level, the anode potential of the voltage stabilizing diode is zero, the cathode potential of the voltage stabilizing diode is 7.5V, and because the control end of the optocoupler 8 in fig. 4 is a light emitting diode, the voltage drop of the light emitting diode is about 1.0V, the 12V voltage on the power supply line in fig. 4 is pulled down to (7.5+1.0) V which is 8.5V.
Further, as shown in fig. 5, for an air conditioner controller provided in a fourth embodiment of the present invention, on the basis of the air conditioner controller provided in the third embodiment of the present invention, the current loop circuit includes an outdoor unit receiving optocoupler module, an outdoor unit transmitting optocoupler module, an indoor unit transmitting optocoupler module, and an indoor unit receiving optocoupler module, where the indoor unit transmitting optocoupler module is connected to an indoor unit weak current communication transmitting terminal on the indoor unit controller; meanwhile, an optocoupler power supply module specially used for supplying power to the current loop circuit is further arranged in the outdoor unit controller, the optocoupler power supply module is directly connected with the live wire and the zero wire to generate direct current suitable for the current loop circuit, and the optocoupler power supply module supplies the direct current to the outdoor unit receiving optocoupler module, so that the smoothness of the current loop circuit is kept. According to the invention, when the live wire disconnecting device disconnects the live wire, the connection between the live wire and the optocoupler power supply module is also disconnected, so that the optocoupler power supply module does not supply direct current to the outdoor unit receiving optocoupler module any more, a current loop circuit is disconnected, the current loop circuit does not consume electric energy, and the electric energy is further saved. In an embodiment of the invention, when the air conditioner is in a standby state, the indoor unit controller controls the indoor unit weak current communication sending end to output a low level, so that no current is consumed on the indoor unit sending optical coupling module, and electric energy is further saved.
The present invention also provides a first air conditioner control method, where the air conditioner uses the air conditioner controller according to any of the first to fourth embodiments of the present invention, as shown in fig. 6, the method includes:
s101: and initially powering on the air conditioner, and operating the indoor unit power supply module.
S102: entering a first power saving mode, the first power saving mode comprising: the indoor unit controller controls the live wire disconnecting device to work, and the live wire is disconnected with the outdoor unit power supply module.
S103: and judging whether the air conditioner is started, if so, executing S104, and if not, continuing to execute S102.
S104: entering a first normal operating mode, the first normal operating mode comprising: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module, and then S105 is executed.
S105: and judging whether a shutdown signal is received, if so, executing S106, and if not, continuing executing S104.
S106: and delaying the preset time, and entering a first power saving mode after the outdoor compressor and the external fan equipment stop.
In the first air conditioner control method, when the air conditioner is initially powered on, the air conditioner enters a first power saving mode, so that the indoor unit controller controls the live wire disconnecting device to work, the connection between the live wire and the outdoor unit power supply module is disconnected, the outdoor unit control module and the strong current zero-crossing detection circuit are not electrified, and the electric energy consumption of the air conditioner during standby is reduced. And when the air conditioner is judged to be started, the first normal working mode is entered, power is supplied to the outdoor unit control module and the strong current zero-crossing detection circuit, and the air conditioner works normally. When the air conditioner is detected to be shut down, the air conditioner enters the first power saving mode again, and the power consumption of the air conditioner during standby is reduced.
The present invention also provides a second air conditioner control method, in which the air conditioner uses the air conditioner controller according to any one of the third embodiment and the fourth embodiment, as shown in fig. 7, the method includes:
s201: and initially powering on the air conditioner, and operating the indoor unit power supply module.
S202: entering a second power saving mode, the second power saving mode comprising: the indoor unit controller controls the live wire disconnecting device to work and disconnects the live wire from the outdoor unit power supply module; and a low-power consumption control port of the indoor unit controller outputs low level.
S203: and judging whether the air conditioner is started, if so, executing S204, and if not, continuing to execute S202.
S204: entering a second normal operating mode, the second normal operating mode comprising: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module; the low power consumption control port of the indoor unit controller outputs a high level, and then S205 is executed.
S205: and judging whether a shutdown signal is received, if so, executing S206, and if not, continuing executing S204.
S206: and delaying the preset time, and entering a second power saving mode after the outdoor compressor and the external fan equipment stop.
The difference between the second air conditioner control method and the first air conditioner control method is the difference between the second power saving mode and the first power saving mode, namely, on the basis of the first power saving mode, the low-power-consumption control port of the indoor unit controller outputs a low level, so that the direct-current voltage output by the indoor unit power supply module is reduced, and the power consumption of the indoor unit power supply module is reduced. The second normal operation mode is suitable for generating a difference with the first normal operation mode, and is not described herein again.
The present invention further provides a third air conditioner control method, where the air conditioner uses the air conditioner controller according to any one of the third embodiment and the fourth embodiment, and an indoor unit weak current communication sending end of an indoor unit controller of the air conditioner controller is further connected to an indoor unit sending optocoupler module, as shown in fig. 8, where the method includes:
s301: and initially powering on the air conditioner, and operating the indoor unit power supply module.
S302: entering a third power-saving mode, the third power-saving mode comprising: the indoor unit controller controls the live wire disconnecting device to work and disconnects the live wire from the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs a low level; and the internal machine weak current communication sending end outputs low level.
S303: and judging whether the air conditioner is started, if so, executing S304, and if not, continuing to execute S302.
S304: entering a third normal operating mode, the third normal operating mode comprising: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs high level; the internal weak-current communication transmitting terminal outputs a high level, and then S305 is performed.
S305: and judging whether a shutdown signal is received, if so, executing S306, and if not, continuing executing S304.
S306: and delaying the preset time, and entering a third power-saving mode after the outdoor compressor and the external fan equipment stop.
The difference between the third air conditioner control method and the second air conditioner control method is the difference between the third power saving mode and the second power saving mode, namely, on the basis of the second power saving mode, the weak current communication sending end of the indoor unit outputs a low level, so that no current is consumed on the sending optical coupling module of the indoor unit, and electric energy is further saved. The third normal operation mode is suitable for generating a difference with the second normal operation mode, and is not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. An air conditioner controller comprises an indoor unit control module and an outdoor unit control module, wherein the indoor unit control module comprises an indoor unit controller and an indoor unit power supply module, the outdoor unit control module comprises an outdoor unit controller and an outdoor unit power supply module, a live wire and a zero line are respectively connected with the indoor unit power supply module and the outdoor unit power supply module, the indoor unit controller is connected with a strong current zero crossing detection circuit, and the strong current zero crossing detection circuit is also connected with the live wire and the zero line, the air conditioner controller is characterized in that a live wire disconnecting device is arranged on the indoor unit controller and can disconnect the live wire from the outdoor unit power supply module under the indoor unit controller, the indoor unit controller is a control chip and is provided with a low-power consumption control port capable of outputting low level, and a voltage clamping circuit is arranged between a power supply line for supplying power to the indoor unit controller by the indoor unit power supply module and the low-power consumption control, the voltage clamping circuit comprises a first resistor (1), a second resistor (2), a third resistor (3), a first voltage stabilizing diode (4), a second voltage stabilizing diode (5), a first capacitor (6), a second capacitor (7) and an optocoupler (8); one end of the first resistor (1) is connected with a power supply line, and the other end of the first resistor is respectively connected with the cathode of the optocoupler (8), the cathode of the first voltage-stabilizing diode (4) and the cathode of the second voltage-stabilizing diode (5); one end of the second resistor (2) is connected with the anode of the first voltage stabilizing diode (4), and the other end of the second resistor is connected with the low-power consumption control port; one end of the third resistor (3) is connected with the anode of the second voltage stabilizing diode (5), and the other end of the third resistor is grounded; the first capacitor (6) and the second capacitor (7) are connected in series to form a series body, one end of the series body is connected with an emitting electrode of the optocoupler (8), and the other end of the series body is grounded.
2. An air conditioning controller according to claim 1, characterised in that the live disconnect means is also capable of disconnecting live from a strong current zero crossing detection circuit.
3. An air conditioning controller according to any of claims 1 or 2, wherein the live disconnect device is an electromagnetic relay.
4. The air conditioner controller according to claim 1, wherein an indoor unit weak current communication sending end of an indoor unit controller of the air conditioner controller is further connected with an indoor unit sending optical coupling module.
5. An air conditioner control method using the air conditioner controller according to any one of claims 1 to 4, the method comprising:
step 1: the air conditioner is initially powered on, an indoor unit power module works and enters a first power saving mode, and the first power saving mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to work and disconnects the live wire from the outdoor unit power supply module;
step 2: judging whether the air conditioner is started, if so, entering a first normal working mode, wherein the first normal working mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module; then executing step 3;
and step 3: and judging whether a shutdown signal is received or not, if so, delaying the preset time, and entering a first power saving mode after the outdoor compressor and the external fan equipment stop.
6. An air conditioner control method using the air conditioner controller according to any one of claims 1 to 4, the method comprising:
step 1': the air conditioner is initially powered on, the indoor unit power module works and enters a second power saving mode, and the second power saving mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to work and disconnects the live wire from the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs a low level;
step 2': judging whether the air conditioner is started, if so, entering a second normal working mode, wherein the second normal working mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs high level; then step 3' is executed;
step 3': and judging whether a shutdown signal is received or not, if so, delaying the preset time, and entering a second power-saving mode after the outdoor compressor and the external fan equipment stop.
7. An air conditioner control method using the air conditioner controller according to claim 4, characterized by comprising:
step 1': the air conditioner is initially electrified, the indoor unit power module works and enters a third power-saving mode, and the third power-saving mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to work and disconnects the live wire from the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs a low level; the internal machine weak current communication sending end outputs low level;
step 2': judging whether the air conditioner is started, if so, entering a third normal working mode, wherein the third normal working mode comprises the following steps: the indoor unit controller controls the live wire disconnecting device to stop working, so that the live wire is connected with the outdoor unit power supply module; a low-power consumption control port of the indoor unit controller outputs high level; the internal machine weak current communication sending end outputs high level; then step 3 "is executed;
step 3': and judging whether a shutdown signal is received or not, if so, delaying the preset time, and entering a third power-saving mode after the outdoor compressor and the external fan equipment stop.
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| CN115962556B (en) * | 2022-12-30 | 2024-11-08 | 珠海格力电器股份有限公司 | Air conditioner control circuit, method, system and equipment |
| CN116123697B (en) * | 2022-12-30 | 2024-11-08 | 珠海格力电器股份有限公司 | Air conditioner control circuit, method, system and equipment |
| CN116085982B (en) * | 2022-12-30 | 2024-11-08 | 珠海格力电器股份有限公司 | Air conditioner control circuit, method, system and equipment |
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| CN109323374A (en) | 2019-02-12 |
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