Sinclair SDT-ASH is a user-friendly diagnostic tool designed for air conditioning units. It offers comprehensive features for servicing and troubleshooting split wall-mounted inverter units. With its ability to perform self-diagnosis and simulate both indoor and outdoor units, technicians can efficiently identify malfunctions and pinpoint the root cause of issues. Whether it's testing communication errors or analyzing operational data, the Sinclair SDT-ASH enhances the efficiency and accuracy of air conditioning maintenance and repairs.
Sinclair SDT-ASH is a user-friendly diagnostic tool designed for air conditioning units. It offers comprehensive features for servicing and troubleshooting split wall-mounted inverter units. With its ability to perform self-diagnosis and simulate both indoor and outdoor units, technicians can efficiently identify malfunctions and pinpoint the root cause of issues. Whether it's testing communication errors or analyzing operational data, the Sinclair SDT-ASH enhances the efficiency and accuracy of air conditioning maintenance and repairs.
DIAGNOSTIC TOOL FOR SPLIT
WALL MOUNTED SERIES
SDT-ASH
USER'S MANUAL
EN
1
AC-L AC-L
AC-N
COM ODU
AC-NAC-L
COM IDU
COM
AC-N
2 0V
50Hz
3mA
185×140×40（mm）
Parameters of Tester
Brief Introduction
Scope of Application
It is applicable to one-to-one wall-mounted type inverter units.
Model
SDT-ASH
Rated Voltage
Rated Frequency
Rated Current
Dimensions
Indoor Unit
Outdoor Unit
Tester of Inverter Unit
Functions
Basic Principle
Connect the tester to communication line of the unit in parallel as shown below:
1.Self-diagnosis of Indoor and Outdoor Units:
2. Test Indoor Unit:
If there is communication malfunction or malfunctio
n of indoor unit needs to
be independently
inspected, tester will simulate outdoor unit to communicate
with indoor unit and meanwhile intercept and capture data of indoor unit.
3. Test Outdoor Unit:
If there is communication malfunction or malfunc
tion of outdoor unit needs
Monitor and display communication data of the unit. If it fails, it will
to be independently
inspected, tester will simulate indoor unit to communicate
with outdoor unit and meanwhile intercept and capture data of outdoor unit.
In this mode, data of remote control can be directly received.
automatically turn to simulation test to test indoor and outdoor unit step
by step.Finally,it will judge which malfunction it is.
Description of Appearance and Buttons
Operation
There is LCD and buttons on tester to facilitate the operation. LCD display
the user’s menu and useful information. Buttons is used for choosing operation.
Back to previous page
Up
Enter selected item
Backlight of LCD is controlled by program. At the beginning of energization,
the backlight will be on for 5 seconds as default. If there is no button pressed
within 5 seconds, it will be off automatically. Besides, it will be on for 10
seconds. If button is not pressed within 10 seconds, it will be off automatically.
Appearance is as shown below:
Power cord is three-core. Brown wire connects to live wire, blue wire connects
to neutral wire and black wire connects to communication wire. Connect
them to indoor unit or patching board of outdoor unit as shown in the picture.
Down
Introduction to Wiring
Self-diagnosis for Wiring of Indoor and Outdoor Units
Wiring for Testing Indoor Unit
Connect three-core wire to patching board of indoor unit or outdoor unit.
Connect wire according to corresponding wire. Live wire connects to terminal
of live wire (brown); neutral wire connects to terminal of neutral wire (blue);
communication wire connects to terminal of communication wire (black).
In that case, communication wire of tester, indoor unit and outdoor unit
are connected in
parallel.
When self-diagnosis fails and it needs to manually test indoor unit, only
tester and indoor unit shall be connected and communication wire of outdoor
unit shall be disconnected.
Connection of neutral and live wire is the same as self-diagnosis of
indoor and outdoor units and indoor unit shall be turned on.
When self-diagnosis fails and it needs to manually test outdoor unit,
only tester and outdoor unit shall be connected and communication wire of
indoor unit shall be disconnected.
Connection of neutral and live wire is the same as self-diagnosis of
indoor and outdoor units and outdoor unit shall be turned on.
Wiring for Testing Outdoor Unit
Process of Self-diagnosis of Indoor and Outdoor Units
Inverter checker
function selection：
self - diagnosis
test IDU
test ODU
self - diagnosis
under testing...
communication error
testing ODU...
communication error
testing IDU...
After choosing function, tester will intelli-
gently
identify communication circuit and protocol
malfunction, the tester can’t monitor comm-
unication data of the unit and the self-diagnosis
will fail. In that case, tester will automatically
turn to simulation test to judge where the
communication malfunction comes from.
of the unit. During this period,“self-diagnosis
under testing…” is displayed.
Test Interface
Interface of Choosing Function
After con
Instruction of operation procedure Interface display
necting three-core wire as
per the method above, energize the unit
selection interface:self-diagnosis, test IDU
and test ODU. Press button“▲” or “▼”
to choose expected function and then press
button “ENTER” to enter the function.
self-diagnosis. One is the method set forth
above.
The other is that don’t press any button
within 5 seconds and then the system will
automatically enter self-diagnosis.
and the tester will enter welcome interface.
In 1 second later, it will automatically
change to function selection interface.
There are three items in function
There are two methods to choose
Error of Self-diagnosis Interface
If the tested unit has communication
4
self - diagnosis done!
1. check IDU’s data
malfunction display:
2. check ODU’s data
malfunction display:
mismatch of IDU and
2. check ODU’s data
communication error
with IDU and ODU...
communication error
with indoor unit
communication error
with outdoor unit
ON/OFF status: ON
running mode:
cooling
speed of indoor fan:
ODU error
Interface of Successful Self-diagnosis
Interface of Operation Information
Auto simulation will test indoor and outdoor units as set procedure
and the result is shown below:
When the tested unit has no communication
malfunction, the self-diagnosis will be successful.
The tester will turn to interface of successful
self-diagnosis.
Press button“▲”or “▼”to view
information of malfunction. If there is
malfunction, the malfunction will be displayed
as shown below.
The second row is “ check IDU’s data”;
and press button “ENTER” to enter
corresponding interface.
the third row is “ check OUD’s data”. Press
button“▲”or“▼”
to choose expected item
Press button “BACK” to return to previous
interface, view information of malfunction or
enter function selection interface.
Operation information includes information
of all communication data. Press button “▲” or
“▼” to change page, which is shown as below.
Process of Self-diagnosis of Indoor and Outdoor Units
5
Process of Testing Indoor Unit
Once the unit is energized, it will
When the unit has communication malfunction which causes failure
of self-diagnosis or malfunction of indoor unit needs to be independently
inspected, it will turn to manual testing mode. This section is the process
of manual test for indoor unit.
When the unit is de-energized, connect three-core wire to patching board
of indoor unit as per corresponding color.
Note: in that case, communication wire of tester and indoor unit shall be
connected in parallel. Suspend the communicat
ion wire of outdoor unit and
don’t let it contact with other conducting body.
enter welcome interface and 1 second later,
it will automatically turn to function selection
interface. Press button selection interface.
Press button
“▲”or “▼”to select “ test
IDU”
function and press button” ENTER” to
enter it, which is as shown below.
function selection：
test ODU
self - diagnosis
test IDU
function selection：
test ODU
self - diagnosis
disconnect communica-
tion wire of ODU
test IDU
under testing. . .
After confirming that the communication
wire of outdoor unit has been disconnected,
press button “ENTER” to enter test interface
to start the test.
After entering the function, system will
“test IDU under testing” is displayed
and it starts to test the unit.
show “ disconnect communication wire of ODU”.
patching board. If not, disconnect the comm-
unication wire after de-energization. Then
energize it and enter the function again.
In that case, user shall confirm if communication
wire of outdoor unit has been removed form
Live wire connects to terminal
of live wire (brown); neutral wire connects to terminal of neutral wire(blue);
communication wire connects to terminal of communication wire (black).
disconnect communica-
tion wire of ODU
test IDU
under testing. . .
Interface displayInstruction of operation procedure
Function Selection Interface
Prompting Interface for Disconnecting
Test Interface
Wire
6
test IDU
Failure of Manual Test
Successful Test for Indoor Unit
IDU test succeeded!
2. check ODU’s data
malfunction display:
1. check IDU’s data
test IDU
communication error
with indoor unit.
IDU data is not
received
View of malfunction and operation data is
keep communicating with indoor unit.
test for indoor unit is successful, tester will
the same as self-diagnosis function.After the
If communication fails, “ IDU data is not
received” will be displayed.
When manual test for indoor unit fails,
“test IDU communication error with indoor
unit” will be displayed on tester.
When tested unit has no communication
malfunction, tester will simulate outdoor unit
to communicate with indoor unit as per set
communication data of outdoor unit. In that
case, tester will automatically turn to successful
interface which is shown as below.
Process of Testing Indoor Unit
When the unit has communication malfunction which causes failure
of self-diagnosis or malfunction of outdoor unit needs to be independently
inspected, it will turn to manual testing mode. This section is the process of
manual test for outdoor unit.
When the unit is de-energized, connect three-core wire to patching board
of outdoor unit as per corresponding color. Live wire connects to terminal
of live wire (brown); neutral wire connects to terminal of neutral wire(blue);
communication wire connects to terminal of communication wire (black).
Note: in that case, com
munication wire of tester and outdoor unit
shall be connected in parallel. Suspend the communication wire of indoor
unit and don’t let it contact with other conducting body.
Function Selection Interface
Once the unit is energized, it will enter
Prompting Interface for Disconnecting
Wire
automatically turn to function selection interface.
Press button“▲”or“▼”to select “ test ODU”
function and press button” ENTER” to enter it,
which is as shown below.
welcome interface and 1 second later, it will
function selection：
test IDU
self - diagnosis
disconnect communica-
tion wire of IDU
After entering the function, system will
show “ disconnect communication wire of
IDU”. In that case, user shall confirm if
communication wire of indoor unit has
been removed form patching board. If not,
disconnect the communication wire after
de-energization. Then energize it and enter
the function again.
Process of Testing Outdoor Unit
Interface displayInstruction of operation procedure
8
test ODU
selection of ODU test
fixed frequency test
normal test
test ODU
under testing. . .
Test for Outdoor Unit
Test Interface
After confirming that the communication
wire of indoor unit has been disconnected,
“test ODU under testing” is
displayed and communication circuit and
communication.Protocol will be automatically
inspected. After the inspection is successful,
it will simulate indoor unit to communicate
with outdoor unit as per preset commun-
ication data. It also will turn to interface
of malfunction information to display each
kind of information.
press button “ENTER” to enter the next
step. In that case, it will prompt “normal
test” and “
fixed frequency test”. “ normal
test” is for test free frequency which can
completely simulate normal operation of
the complete unit. “fixed frequency test”
can simulate the operation process of
fixed-frequency unit which facilitate
troubleshooting and the interface is shown
below.
button “ENTET” to enter the next step to
start the test.
When select the expected item, press
Process of Testing Outdoor Unit
Interface displayInstruction of operation procedure
10
Failure of Manual Test
ODU test succeeded!
malfunction display:
2. check ODU’s data
1. check IDU’s data
ODU data is not
received
test ODU
with outdoor unit
communication error
When manual test for outdoor unit fails,
“test ODU communication error with outdoor
unit” will be displayed on tester.
Successful Test for Outdoor Unit
When tested unit has no communication
View of malfunction and operation data is
to
communicate with outdoor unit as per set
communication data of indoor unit. In that
malfunction, tester will simulate indoor unit
the same as self-diagnosis function.After the test
for outdoor unit is successful, tester will keep
communicating with outdoor unit.
If communication
fails, “ ODU data is not received” will be displayed.
case, tester will automatically turn to successful
interface which is shown as below.
Note: Tester has infrared receiver and during manual test for outdoor unit,
remote control can be used
for setting each operation mode and temp
erature to
the tester.
Process of Testing Outdoor Unit
NOTE CONCERNING PROTECTION OF
ENVIRONMENT
This product must not be disposed of via normal household waste after its service life, but must be
taken to a collection station for the recycling of electrical and electronic devices. The symbol on the
product, the operating instructions or the packaging indicate such disposal procedures. The materials
are recyclable in accordance with their respective symbols. By means of re-use, material recycling or
any other form of recycling old appliances you are making an important contribution to the protection
of our environment. Please ask your local council where your nearest disposal station is located.
In case of quality problem or other please contact your local supplier or authorized service center.
Emergency number: 112
PRODUCER
SINCLAIR CORPORATION Ltd.
1-4 Argyll St.
London W1F 7LD
Great Britain
www.sinclair-world.com
This product was manufactured in China (Made in China).
REPRESENTATIVE
SINCLAIR Global Group s.r.o.
Purkynova 45
612 00 Brno
Czech Republic
TECHNICAL SUPPORT
SINCLAIR Global Group s.r.o.
Purkynova 45
612 00 Brno
Czech Republic
Tel.: +420 800 100 285
Fax: +420 541 590 124
www.sinclair-solutions.com
info@sinclair-solutions.com
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Sinclair SDT-ASH is a user-friendly diagnostic tool designed for air conditioning units. It offers comprehensive features for servicing and troubleshooting split wall-mounted inverter units. With its ability to perform self-diagnosis and simulate both indoor and outdoor units, technicians can efficiently identify malfunctions and pinpoint the root cause of issues. Whether it's testing communication errors or analyzing operational data, the Sinclair SDT-ASH enhances the efficiency and accuracy of air conditioning maintenance and repairs.
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