HOLTEK Air Conditioner Workshop User Guide
- June 11, 2024
- HOLTEK
Table of Contents
Air Conditioner Workshop User Guide
Development Environment Introduction
This air conditioner workshop integrates all the common functions which exist
in present day household air conditioners. Using this workshop, users can
configure the air conditioner’s internal fan, wind deflector, temperature
measurement, I/O port selection, etc. to quickly generate air conditioner
projects. Additionally users can implement secondary development on the
project for different product requirements.
1.1 Development Environment Schematic Diagram
1.2 Software Description
The required software includes air conditioner workshops, the HT-IDE3000 and
the HOPE3000.
Air conditioner workshop: The workshop is used for air conditioner
functional configuration, internal fan operation, wind deflector operation,
temperature measurement configuration and code generation.
HT-IDE3000: View, compile and generate code, secondary development,
download the program using with the e-Link.
HOPE3000: Programs the device using the e-Writer.
1.3 Hardware Description
Internal control board: two development boards, inverter internal control
board and fixed speed internal control board. Motor driver daughter board:
includes PG motor driver daughter board, BLDC motor driver daughter
board.
Communication daughter board: includes HE inverter, MD inverter, GL
inverter communication daughter board.
MCU adapter daughter board:
divided into two types: HT66F31A5 and HT66F2362 adapter daughter boards, used
to select different MCUs as the main control MCU for the fixed speed air
conditioner control board.
Display board: The display board includes a
display drive circuit and an infrared receiving circuit.
This is used to display the air conditioner on/off status, set temperature information and receive remote infrared signals.
Simulated load board:
The integrated digital resistors on the simulated load board are used to
simulate indoor temperature, evaporator temperature and condenser temperature
NTC components.
Users can select different NTC specifications and adjust the temperature value accordingly to implement ways to control different temperatures. In addition, the simulated load board can receive the control board indoor unit status information. It can also display information such as the indoor unit working mode, air speed, compressor speed etc., which will assist debugging various air conditioner functions.
Infrared remote control board: includes
infrared emission circuit and LCD driver circuit. Used to emit infrared
commands to control the air conditioner for operation, and display the air
conditioning status on an LCD.
Air Conditioner Workshop
2.1 Workshop Software
Double-click on the executable file “Air Conditioner Workshop.exe” in the BIN
folder to open the air conditioner workshop software as shown in the figure
below.
Open the
page as shown below:
2.2 File Menu Description
There exists four items within the file menu: New Project, Open Project,
Save Project, and Save Project As, which are described in detail below.
2.2.1 New Project
Click on the New Project item under the file menu to create a new air
conditioner development project, as shown in the figure below.
The new project page is shown in the figure below.
In the new project window, the project name needs to be edited →
select the project path → select the air conditioner type, horsepower, MCU
type and package (determined by the air conditioner type, users cannot change
this), MCU system clock, click the “OK” button to enter the project
configuration interface.
On the new project page, hovering the mouse over the MCU area will display a
summary of the MCU resources. This will assist users to familiarise themselves
with the available MCU resources.
Air Conditioner Type
A. Air Conditioner Model
The wall-mounted or vertical cabinet air conditioner can be selected.
B. Inverter Type or Fixed Speed Type
Select either inverter type or fixed speed air conditioner.
C. Cold/Heat or only Cold
Select whether the air conditioner is a dual heating and cooling type or a
cooling-only type.
D. Cooling Capacity
Select Air Conditioner Horsepower – select either 1hp, 1.5hp or 2hp.
E. Communication Protocol
When selecting the communication protocol for the indoor and outdoor air
conditioner, protocol 1~protocol 3 can be selected. If a custom protocol is
selected, users can design a communication protocol for themselves. If a
protocol 1~3 is selected, one of the platform integrated communication
protocols will be used. Protocol 1 corresponds to the HE brand which means
using the HE communication daughter board. Protocol 2 corresponds to the MD
brand which means using the MD communication daughter board. Protocol 3
corresponds to the GL brand which means using the GL communication daughter
board.
MCU Setup
A. MCU
Here the MCU model is selected by the platform according to the air
conditioner type and cannot be changed.
B. MCU Package
According to the air conditioner type, the platform will select this and which
cannot be changed.
C. System Clock
Select the MCU Operating Frequency, HIRC-8MHz, HIRC-12MHz, HIRC-16MHz as the
MCU internal clock, with frequencies of 8MHz, 12MHz, 16MHz. Select HXT-8MHz,
HXT-12MHz, HXT16MHz as the external crystal oscillator with frequencies
divided into 8MHz, 12MHz and 16MHz.
2.2.2 Open Project
Click on “Open Project” in the shortcut bar. Find the path where the project
is located and select the file with the suffix .pjac to open the air
conditioner development project. Or select the nearest project on the platform
software and double-click to open it.
2.2.3 Save Project
After setting up the project parameters, this can be used to manually save the
set parameters. The platform will also automatically save the parameters.
2.2.4 Save Project As
This option is used to save to an additional project, however note that the
original project will still exist.
2.3 Setting Menu Description
Within the settings menu, there are seven configuration pages and three
function pages. The overall setting page is shown below. The settings page can
be divided into three areas, as follows:
- Function selection area, here switch to the functions which need to be set.
- Parameter setting area, here various corresponding function parameters can be set.
- Pin usage schematic area, here the pin usage is shown, where green and yellow are power and ground pins, blue are used pins, pink are pins being configured and white are unused pins.
2.3.1 Buzzer
The buzzer can be used to prompt operations such as power-on, power-off and to
indicate when remote control commands have been received. Such audio feedback
is an important part of humancomputer interaction. The following parameters
are required to configure this.
A. Buzzer Type
Includes active and passive buzzer types, the default is a passive buzzer.
B. Driver Pins
Select which pins control the buzzer.
C. Driver Frequency
Select the driving frequency of the passive buzzer. Options include 2kHz, 4kHz
(valid when the passive buzzer is selected).
D. Drive Level
Select the active buzzer drive level, selectable as high level or low level
(valid when the active buzzer is selected).
E. Power-on Prompt Tone Duration Time
Select the buzzer sound duration time when the air conditioner is powered on,
the range is 10~500ms, with interval steps of 10ms.
F. Shutdown Prompt Tone Duration Time
Select the buzzer sound duration time when the air conditioner is turned off,
the range is 10~500ms, with interval steps of 10ms.
G. Remote Control Audible Indicator Duration Time
Select the buzzer sound duration time when a remote control command has been
received, the range is 10~300ms, with interval steps of 10ms.
2.3.2 Internal Fan
The indoor fan is used to blow the cool or hot air of the air conditioner into
the room. This speeds up the indoor air circulation and improves the heat
exchange efficiency. The internal fan needs to set the following parameters.
A. Internal Fan Types
The internal fan can be selected to be a BLDC motor (brushless DC motor) or PG
motor (AC motor) type. Here, the BLDC motor uses a variable PWM duty cycle to
control the internal fan speed. The PG motor uses a solid state relay (a kind
of thyristor) to control the internal fan speed. This needs to be implemented
using a zero-crossing detection circuit.
B. Motor
Control TM
A timer function is used to control the internal fan When a BLDC motor is
selected, the timer is used to output a PWM signal to control the motor. When
a PG motor is selected, it is used to calculate the conduction angle. The
actual available timers are determined by the platform. C. PWM Frequency
Select the PWM signal frequency to drive the BLDC motor. Here the frequency
range is 100~8000Hz.
Note that if an STMn is selected and the frequency is greater than 1000Hz, the
selected frequency and the output frequency may be slightly different. This is
only valid when a BLDC motor is selected.
D. PWM Active State
Select the active state of the PWM signal to be either active high or active
low. This selection relates to the BLDC motor drive circuit. If the motor
rotates when the output is high, select active high. If the motor rotates when
the output is low, select active low. Select according to the actual circuit.
This is only valid when a BLDC motor is selected.
E. Zero Crossing Detector Pin
The zero-crossing detection pin is used to locate the zero-crossing point of
the mains power. This works alongside the solid state relay to adjust the
speed of the PG motor. The selected pin is an external interrupt pin. It is
only valid when the PG motor is selected.
F. Drive Pins
Select which IO port is used to output the PWM signal or control signals. If
it is a BLDC motor, the optional pin can only select the pin related to the
timer output. If it is a PG motor, any remaining I/O port is sufficient. The
default is to be a high level drive.
G. Feedback Pin
Select the internal fan speed feedback pin to calculate the internal fan
speed. The selected pin is an external interrupt pin. On the HT66F31A5 it is a
GPIO pin due to insufficient external interrupt pins.
H. Gear Number
Select the internal fan gear numbers. The range is 3~5 gears. The gears do not
include the silent gear and the powerful gear.
I. Pulses per Revolution
Select the number of pulses generated by the internal fan per revolution. The
range is 1~12. The value is related to the internal fan speed calculation.
Select this according to the actual internal fan parameters.
J. Cool Air Speed
Set the wind speed of each gear of the internal fan in the cooling mode and
air supply mode. The units here are revolutions per minute (RPM).
K. Hot Air Speed
Set the wind speed of each gear of the internal fan in the heating mode. The
units here are revolutions per minute (RPM). 2.3.3 Air Deflector
-
Up/Down Sweep
Used to set the parameters related to the up and down sweep operation of the air conditioner indoor unit. The following parameters need to be set.
A. Motor Phase Number
Select the stepper motor number of phases, having a range of 4~6 phases.
B. Polarity
The stepper motor drive polarity is unipolar common anode.
C. Step Angle
The rotation angle of each drive pulse ranges from 0.1 to 30 degrees. Enter a figure which corresponds to the stepper motor specification.
D. Deceleration Ratio
The stepper motor output shaft deceleration ratio ranges from 1/1 to 1/200 expressed as a reciprocal.
If the deceleration ratio is 1/100, the input value should be 100. Enter a figure which corresponds to the stepper motor specification.
E. Drive Mode
Select the driving mode of the stepper motor, a double-beat driving (1-2 phase drive) can be selected.
Taking a 4-phase motor as an example, the driving cycle is A→AB→B→BC→C→CD→D→DA.
For a 1-phase drive, its drive cycle is A→B→C→D. For a 2-phase drive, its drive cycle is AB→BC→CD→DA. Select according to the stepper motor specification.
F. Time
Select the duration of the stepper motor single drive pulse. The smaller the value, the faster the wind deflector rotates. The range is 5~50ms with a step of 5ms.
G. Opening Angle
This is the wind deflector angle from the closed position to the highest sweep point. Refer to the Figure below where Angle 1 is related to the shell structure, the range is 30~120 and the default is 70 degrees.
H. Sweep Angle
This is the up and down sweep angle of the wind deflector. Refer to the Figure below where Angle 2 is related to the shell structure, the range is 30~120 and the default is 55 degrees. I. Drive Pin Selection
Select the drive pins for each phase of the stepper motor. This item is related to the number of motor phases. If 4 phases are chosen, 4 pins need to be configured. If 5 phases are chosen, 5 pins need to be configured.
-
Left/Right Sweep
Reserved item, presently not supported.
-
2.3.4 Temperature Measurement
-
Indoor Temperature Measurement
Set the parameters related to indoor temperature detection, including the following items.
A. NTC Control
Select whether to execute NTC detection.
B. NTC Pin
Select the NTC sampling pin, only an A/D Converter input pin can be selected.
C. NTC Specification
Select the NTC specification, including commonly used types – 10K @ 25℃/B3950, 15K @ 25℃/ B3950, 20K @ 25℃/B3950, 23K @ 25℃/B4200
D. β Value
It is not required to manually select this as the platform will automatically selected it according to the chosen NTC specification.
E. Resistor Divider
Select the resistor divider value.
F. NTC Location
Select where the NTC is located in the voltage divider circuit. The upper end means that one end of the NTC is connected to VDD and the lower end means that the NTC end is connected to GND.
Refer to the figure below.
-
Evaporator Temperature Detect
Reference Room Temperature Detection -
Condenser Temperature Detect
Refer to the room temperature detection. This option is not available for inverter air conditioners.
2.3.5 Display Settings
Set the parameters related to the display. The platform may not include all
the options listed below.
Ignore any options which are not included.
A. Select Driver IC
Select the display driver IC. This can be either the HT16D31B or the 74HC164D.
If the HT16D31B driver is selected, the MCU can issue instructions to the
HT16D31B through the I
B. IC SCL Pin
Configure the I2 C clock pin for communication with the HT16D31B. Only valid
when the HT16D31B is selected. C. I C SDA Pin Configure the I2 C data pin for
communication with the HT16D31B. Only valid when the HT16D31B is selected.
C interface. If
the 74HC164D is selected, a Darlington transistor, such as the ULN2003, is
required to drive the display.
D. Clock Pin
Configure the clock pin for communication with the 74HC164D. Only valid when
the 74HC164D is selected.
E. Data Pin
Configure the data pin for communication with the 74HC164D. Only valid when
the 74HC164D is selected.
F. Display Digits
Select the number of display digits. If it is required to display decimal
places, choose three. If decimal places are not required, choose two.
G. Other Flag Numbers
Select the number of flags, such as on/off, electric auxiliary heating, etc.
H. COM0 Pin
Select the COM0 scanning pin to control the leftmost number, that is, the tens
digit. Only valid when the 74HC164D is selected.
I. COM1 Pin
Select the COM1 scanning pin to control the intermediate number, that is, the
ones digit. Only valid when the 74HC164D is selected.
J. COM2 Pin
Select the COM2 scanning pin to control the rightmost number, that is, the
decimal place. Only valid when the 74HC164D is selected.
K. COM3 Pin
Select the COM3 scanning pin to control each symbol. Only valid when the
74HC164D is selected.
2.3.6 IO Settings
Note: The platform may not include all the options listed below. Ignore
any options which are not included.
A. External Machine Power Supply (or compressor)
Controls the power supply or power downs the external machine using a relay.
Here the control pin and drive level need to be selected.
B. Electric Auxiliary Heating (only for dual cooling and heating types)
The power supply or power-off of the electric auxiliary heating PTC is
controlled by a relay. Here the control pin and drive level need to be
selected.
C. Emergency Button
Select the emergency button detection pin. The fixed high level is the
inactive state and the low level is when the button is pressed.
D. Infrared Receiver
Select the infrared remote control signal receiving decoding pin, the selected
pin is an external interrupt pin.
E. Internal/External Machine Communication RX (variable speed types only)
Select the internal/external machine communication receiving pin, the selected
pin is the external interrupt or UART receiving function pin. Presently it is
fixed by the platform and cannot be changed.
F. Internal/External Machine Communication TX (variable speed types only)
The internal/external unit communication sending pin is fixed to be PA7.
G. External Fan (fixed speed types only)
Select the external fan power supply control pin and drive level.
H. Four-way valve (fixed-speed cooling and heating models only)
Selects the 4-way valve supply control pin and drive level.
I. PC and RX Communication
Select the receiving pin for the PC communication, either the UART0 or UART1
receiving pin.
J. TX PC and TX Communication
Select the transmitting pin for PC communication, either the UART0 or UART1
sending pin.
2.3.7 Other Settings
-
Basic Settings
A. Maximum Set Temperature
Fixed at 30℃
B. Minimum Set Temperature
Fixed at 16℃
C. Evaporator High Temperature Protection
Set the evaporator high temperature protection value, the air conditioner will stop working if the evaporator temperature is higher than this.
D. Evaporator Low Temperature Protection
Set the evaporator low temperature protection value, the air conditioner will stop working if the evaporator temperature is lower than this.
E. Condenser High Temperature Protection
Set the condenser high temperature protection temperature value, the air conditioner will stop working if the condenser temperature is higher than this.
F. Condenser Low Temperature Protection
Set the condenser low temperature protection temperature value, the air conditioner will st working if the condenser temperature is lower than this.
G. Low Voltage Reset Threshold
Set the minimum operating voltage of the MCU, the MCU will reset below this voltage. -
Fault Code Settings
Note: The platform may not include all the options listed below therefore ignore any which are not included.
A. Interior NTC Fault
Set this error code when the indoor NTC is open or short circuited.
B. Outdoor NTC Fault
Set this error code when the indoor NTC is open or short circuited.
C. Outdoor Extractor NTC Fault
Set this error code when the outdoor extractor NTC is open or short circuited.
D. Evaporator NTC Fault
Set this error code when the indoor evaporator NTC is open or short circuited.
E. Condenser NTC Fault
Set this error code when the outdoor condenser NTC is open or short circuited.
F. Abnormal Communication between Internal and External Units
Set this error code displayed when the communication between the internal and external units is abnormal.
G. Internal Fan Abnormal Speed
Set this error code when the internal fan speed is abnormal.
H. Zero-cross Detection Fault
Set this error code when the zero-crossing signal is abnormal. -
Temperature Control Setting
Note: The platform may not include all the options listed below, therefore ignore those which are not included.
Cooling Mode
A. Compressor Off Condition
When the indoor temperature is lower than the set temperature the compressor
will stop to prevent the temperature from becoming too low. Usually, the
compressor will stop at a temperature 2°C lower than the set temperature.
B. Compressor On Condition
When the indoor temperature is higher than the set temperature, the compressor
will start to ensure a comfortable temperature. Usually, the compressor will
turn on when the temperature is greater than or equal to the set temperature.
C. Compressor Maximum Power Operating Condition
When the indoor temperature is higher than the set temperature the compressor
runs at the maximum speed to quickly reach the set temperature. Usually, the
compressor is turned on when the temperature is greater than or equal to the
set temperature.
Heating Mode
A. Compressor Off Condition
When the indoor temperature is higher than the set temperature, the compressor
will stop to prevent the temperature from being too high. Usually the
compressor will stop when the temperature is 6°C higher than the set
temperature.
B. Compressor On Condition
When the indoor temperature is lower than the set temperature, the compressor
will start to ensure a comfortable temperature. Usually, the compressor will
be turned on when the temperature is lower than or equal to the set
temperature.
C. Compressor Maximum Power Operating Condition
When the indoor temperature is lower than the set temperature, the compressor
will run at its maximum speed to quickly reach the set temperature. Usually,
the compressor will be turned on when the set temperature is lower than the
set temperature.
D. Cold Air Temperature Prevention
When the temperature of the inner channel is higher than this temperature, the
internal fan will turn on to prevent cold air causing discomfort.
E. Internal Fan Delay Shutdown
This is the internal fan shutdown time delay in the heating mode. This will be
the time that the internal fan continues operating after being shutdown in the
heating mode or when the compressor is turned off. This is to ensure that any
residual heat in the channel is extracted.
Dehumidification Mode
A. Compressor Off State
When the indoor temperature is lower than the set temperature, the compressor
will stop to prevent the temperature being too low. Usually, the compressor
will stop when the temperature is 2°C lower than the set temperature.
B. Compressor On State
When the indoor temperature is higher than the set temperature, the compressor
will activate to achieve a comfortable temperature. Usually, the compressor
will be turned on when the indoor temperature is greater than or equal to the
set temperature.
C. Dehumidifier Mode Gear
Set the number of compressor gears in the dehumidification mode. There are
usually two gears where the smaller the number represents a lower compressor
speed.
D. 1st Gear Setting Parameters
Set the compressor speed and internal fan speed corresponding to gear 1.
E. 2nd Gear Setting Parameters
Set the compressor speed and internal fan speed corresponding to the gear 2.
It needs to be greater nd than or equal to the first gear speed.
2.3.8 Overall Framework
This is used to show the overall framework.
2.3.9 Project Output
After setting up the parameters, switch to the output project column to
execute the project output operation.
A. Project Output
After configuring various parameters for the first time, click this button to
generate the project.
B. Update Parameters
When the parameters are changed after the project has been generated, click
this button to update the parameters. It should be noted that if no project
has been generated, this button will be invalid.
C. Open a Project
If the “Use IDE3000 to open project” item below is checked, click on this
button to directly use the HT-IDE3000 to open the project. If it is not
checked, open the directory where the project is located.
2.3.10 Air Conditioner Properties
This item is only used to display air conditioner properties, as shown in the
figure below. 2.4 Help Menu Description
2.4.1 Language
The display language of the platform can be selected to be English, Simplified
Chinese and Traditional Chinese using the language bar under the Help menu.
2.4.2 Documentation
The related documents such as the platform user manual can be examined in the
document bar under the help menu.
2.4.3 About
Display platform version information, as shown.
Air Conditioner Testing
The air conditioner test function is used to test and debug the operational
status of the air conditioner during the development stage. Here developers
can check whether the operating parameters of the air conditioner are correct.
The air conditioner test can be divided into two parts, monitoring and
testing. Click the “Air Conditioner Test” tab to enter the selection
interface, as shown in the Figure below.
3.1 Monitor Mode
Users can select the debugging monitoring mode to monitor the running status
of the air conditioner on the platform.
3.1.1 Hardware Connection
There are two connection methods in the monitor mode.
The first is the demonstration mode. Here the indoor unit is not connected to
the outdoor unit. The main control board is connected to the simulated load
board and the NTC interface of the inner unit is connected to the NTC
interface of the simulated load. The simulated load board is connected to the
PC using a 5V power supply. There is no need to connect it to a 220V mains
power. Note that if the demonstration mode is used, it is necessary to disable
the following three fault detections: F (abnormal communication between
internal and external units), G (abnormal speed of internal fan) and H (zero-
crossing detection Fault). Otherwise the internal unit will report an error
and will not enter the demonstration mode.
The second is the actual operation mode. Here the indoor unit is connected to
the outdoor unit and the main control board is connected to the simulated load
board. The NTC interface of the indoor unit is connected to the simulated NTC
interface of the simulated load or to the actual NTC and the simulated load
board is connected to the PC. A 220V supply provides power to the internal
unit and the air conditioner operates normally. The simulated load board has a
USB to serial port and optocoupler isolation circuit. Use the TYPE-C interface
data cable to connect the simulated load board to the PC, refer to Figure
1~Figure 3.
3.1.2
Monitoring Interface
During air conditioner operation, the air conditioner main controller
regularly sends out its current working status, such as the compressor speed,
the internal fan gear position and the indoor temperature, etc.. The platform
will draw temperature change curves (including target temperature, indoor and
outdoor temperature, evaporator temperature), compressor speed, curve, etc.
The monitoring interface is shown in the figure below. The air conditioner
main control board regularly sends status information (USB to serial port
mode) and the platform displays the operating status of the air
conditioner.
3.1.3 Communication Port
Settings
After the simulated load board is connected to the PC, move the mouse cursor
to “This PC”, click the right mouse button, select “Manage” and then select
“Device Manager” > “Port(COM & LPT)” in the pop-up window. If successful, it
will display “USB-SERIAL CH340(COMx)”, where x is a certain number. If it is
not displayed or there is an exclamation mark behind it, download and install
the CH340 driver and
reconnect.
The “Open Serial Port” button in the communication setting area is used to
open the platform receiving function. It is necessary to select the correct
COM port (consistent with the COM port number shown in the figure below). The
baud rate is fixed at 9600 and the time interval for receiving data is 15s,
30s and 1min which can be selected. After the receiving function is turned on
the platform will start to receive and record the data sent by the air
conditioner master control or simulated load. 3.1.4 Parameter Monitoring
The air conditioner status area displays the operating status of the air conditioner in real time.
3.1.5 Compressor Monitoring
The upper part of the coordinate axis on the right side of the figure is used to record the air conditioner compressor speed and the air conditioner displays the speed correspondingly. For a fixed speed air conditioner, 0 means that the compressor is off and 1 means that it is on. According to the time interval of the received data, the recorded dots are sued to draw a curve which can be used as a compressor startup record.
3.1.6 Temperature Monitoring
The coordinate map of the lower part of the right side of the figure is used to record and draw the target temperature, indoor temperature and evaporator temperature change curve, as shown in the figure below.
On the upper right side the receiving interval time can
be adjusted, choosing between 15 seconds, 30 seconds or 60 seconds. There are
two buttons here. One is the “Export Data” button which will save the air
conditioner compressor status, target temperature, indoor temperature,
evaporator temperature and condenser temperature data to an Excel table. This
is convenient for the user to monitor the air conditioner operational status
and to save the data. The other is the “Clear Data” button which will clear
all the air conditioner operational data received by the platform and clear
the figures in the coordinate chart. Refer to the figure below. 3.1.7 Export
Data Description
The exported data encompasses the air conditioner basic information. This information includes the on/off status, working mode, compressor target speed, compressor current speed (needs to be connected to the external unit), etc. Up/down and left/right sweep operations are represented by 0 and 1 where 0 means off, 1 means on. The internal fan is represented by gear position, 1 means first gear with larger numbers representing higher speeds. The working modes include cooling, heating, dehumidification, air supply and automatic. The target speed and current speed of the compressor are expressed as a frequency in units of Hz. The target temperature, indoor temperature, evaporator temperature, condenser temperature and outdoor temperature are expressed as the actual temperature value. For example a figure of 23.4 means 23.4°C.
Note that a certain type of air conditioner may not contain all the data in the figure below. For example, a fixed-speed air conditioner has no target speed, therefore this value is fixed at 0. The current speed is used to indicate the status of the compressor. 0 means off and 1 means on. Only some models include a condenser temperature and outdoor temperature. If there is no such item, this value will be fixed at -20°C. 3.2 Test Mode
Based on the monitoring mode, the test mode has more air-conditioning control functions. For its interface refer to the figure below. The air conditioner’s on/off status, working mode, set temperature, air speed and other functions can be controlled on the platform and can be divided into manual control and automatic control.
3.2.1 Manual Test Mode
In the manual test mode, the air conditioner working mode, internal fan speed, air deflector, target temperature and other data on the platform interface can be changed. After the setup is complete, click on the “Send Parameters” button, and the platform will send the current data to the simulated load. The simulated load makes corresponding adjustments to the simulated NTC. At the same time, the simulated load sends information such as the working mode of the air conditioner and the air speed gear to the air conditioner main control board. The air conditioner main control board will make the corresponding adjustments according to the received commands.
The air conditioner main control board will also send data to the simulated load regularly and the simulated load will then send the received information to the platform. The platform will then sketch out the received data (including compressor switch, target temperature, indoor temperature, evaporator and condenser temperature, compressor speed (inverter air conditioner)).
3.2.2 Automatic Test Mode
The automatic test mode is supported in the debugging test mode. Before executing the automatic test mode, it is necessary to set the NTC specifications for each temperature measurement. The parameters which are set here are the nominal resistance value of the NTC at 25°C, where the β value is fixed at 3950. After selecting the correct NTC specification from the drop- down menu, click on the “Send Parameters” button to set the NTC specification. If the NTC specification is not set correctly, the simulated load will not be able to correctly simulate the temperature change and the test will fail. After setting the NTC specifications, click on the “Advanced” button which is located on the far right of the automatic mode bar, as shown in Figure 1 below. The “Advanced” page will then be opened where files can be imported. On the “Advanced” page, select the air conditioner working mode and the internal fan gear, and then click on the “Import Data” button to select the Excel file to be imported. After importing the data, each temperature will be displayed in a curve, as shown in Figure 2.
3.2.3 Test File Description
The test file data contains a range of temperature and time information. Refer to below “Test File Information” . “0” means the 0th minute, that is, the first set of data sent by the platform after the automatic test mode has just started. The second set of data will be sent after 0.5 minute until all the data is sent and the automatic test has completed.
Time/
min| ON/
OFF| Working
Mode| Internal
FAN| Target
Temperature
(TR)| Room
Temperature
(TR)| Evaporator
Temperature
(TT)| Condenser
Temperature
(TOT)| Outdoor
Temperature
(To)
---|---|---|---|---|---|---|---|---
0| 1| 1| 1| 22| 25| 25| -20| -20
0.5| 1| 1| 1| 22| 25| 13| -20| -20
1| 1| 1| 1| 22| 24| 10| -20| -20
1.5| 1| 1| 1| 22| 24| 10| -20| -20
2| 1| 1| 1| 22| 24| 10| -20| -20
2.5| 1| 1| 1| 22| 24| 10| -20| -20
3| 1| 1| 1| 22| 23| 8| -20| -20
3.5| 1| 1| 1| 22| 23| 8| -20| -20
4| 1| 1| 1| 22| 23| 8| -20| -20
4.5| 1| 1| 1| 22| 23| 8| -20| -20
5| 1| 1| 1| 22| 22| 8| -20| -20
5.5| 1| 1| 1| 22| 22| 8| -20| -20
6| 1| 1| 1| 22| 22| 8| -20| -20
6.5| 1| 1| 1| 22| 20| 7| -20| -20
7| 1| 1| 1| 22| 20| 7| -20| -20
7.5| 1| 1| 1| 22| 20| 7| -20| -20
8| 1| 1| 1| 22| 20| 7| -20| -20
8.5| 1| 1| 1| 22| 19| 7| -20| -20
9| 1| 1| 1| 22| 19| 7| -20| -20
9.5| 1| 1| 1| 22| 19| 7| -20| -20
10| 1| 1| 1| 22| 19| 7| -20| -20
10.5| 1| 1| 1| 22| 18| 7| -20| -20
11| 1| 1| 1| 22| 18| 6| -20| -20
11.5| 1| 1| 1| 22| 18| 6| -20| -20
12| 1| 1| 1| 22| 18| 6| -20| -20
12.5| 1| 1| 1| 22| 18| 6| -20| -20
13| 1| 1| 1| 22| 20| 10| -20| -20
13.5| 1| 1| 1| 22| 22| 15| -20| -20
14| 1| 1| 1| 22| 23| 18| -20| -20
14.5| 1| 1| 1| 22| 22| 13| -20| -20
15| 1| 1| 1| 22| 21| 8| -20| -20
Test File Information
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Rev. 1.00
2024-02-29
Revision: V1.00
Date: February 29, 2024