AS0112C-P

TYPE4 Checker
Instruction Manual

Global Service Department

February 2020

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Table of contents
Introduction 3
Chapter 1 Overview and preparation 4
1-1 What’s the service checker? 4
1-2 Preparation 6
1-2-1 Essential materials 6
1-2-2 Other materials to prepare 7
1-2-3 Required to do before recording 8
Chapter 2 Installing the checker software 10
2-1 Obtainment of software (new/update) 10
2-2 Installation procedure 10
2-3 Removal of software 11
Chapter 3 Connecting to the unit 12
3-1 D3-NET (F1,F2) connection 12
3-2 Connecting power supply 13
Chapter 4 Overview of the checker software 14
4-1 Start up the checker software 14
4-2 Quit the checker software 14
4-3 Overview of the checker software function 15
Chapter 5 Recording operation data 16
5-1 Viewing operation data 16
5-1-1 Customer info selection 16
5-1-2 Network map display 19
5-1-3 Switching modes 21
5-1-4 Detailed info input 23
5-1-5 Operation data display 26
5-2 Recording setup 30
5-2-1 Setup recording 30
5-3 Centralized operation 32
Chapter 6 Playback of recorded operation data 34
6-1 Playing operation data 34
6-2 Viewing customer/network map information 37
6-3 CSV output (export function) 39
Chapter 7 Other functions 41
7-1 Data transfer 41
7-2 Customer information 43
7-3 Option setting 44
7-3-1 Setup COM port 44
7-3-2 Prohibit/permit centralized control 45
7-3-3 Change display language 46
7-3-4 Change display unit of measure 46
7-4 Help function 47
Frequently asked questions 48
Specification 52

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Introduction
Thank you for purchasing TYPE4 Checker.
This document instructs how to use TYPE4 Checker and Windows PC software for TYPE4 Checker (TYPE4
software). Please read carefully this document before using and use for correct use.
There could be a risk of unexpected accidents unless respecting cautions in this document.

[Instructions for your safety]

In this document;
items which could result fatal damage unless respecting are marked as [WARNING],
items which could result serious damage to equipment are marked as [CAUTION].

Functions, ways to use this software, and supported VRV models by this software are different based on
software version. In this document, instructions are targeted at V1.3.0.0 or later version.

PC software for TYPE3 Checker does not work with TYPE4 Checker. If you have not installed TYPE4 software
to your PC, please obtain it before using.

To obtain the latest information (manual, software), please check on Daikin webpage or ask your national
Daikin distributor.
https://www.daikin.com/products/ac/services/index.html

The contents of this document could be updated without precautions.

The contents of this document is not allowed to reprint without permissions.

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Chapter 1: Overview and preparation

1-1 What’s the service checker?

1) Overview
Service checker is the tool which visualizes operation data (sensor readings, actuator status, operation mode,
etc.) of VRV air conditioning units.

2) Composition
Service checker consists of two main components (TYPE4 checker box, TYPE4 checker software). It works with
Windows PC which is connected to TYPE4 checker box by USB cable. It is necessary to install TYPE4 checker
software to your Windows PC before using.
• TYPE4 checker components (see 1-2-1 Essential materials)
• Windows PC (see 1-2-2 Other materials to prepare)
VRV
USB cable (included)
TYPE4 software
(download)

TYPE4
Windows PC
checker box
D3-NET connection wire
(field procurement)

[Software update]

Supporting new VRV models is realized by PC software, so it is necessary to update TYPE4 checker software
for supporting newly introduced products.

3) Purpose

•Troubleshooting, diagnosis of VRV systems (supporting diagnosis by visualized operation data)

•Commissioning of VRV systems (checking number of connected indoor units, operation condition check)

(Note) This tool is not designed for permanent installation such as continuous monitoring or long term data
logging and such ways of using are not guaranteed. If a permanent monitoring is necessary, please consider
using remote monitoring service.

4) How to obtain TYPE4 checker box

This tool is distributed as service part from local distributor of Dakin. Please contact your local Daikin distributor
for purchasing TYPE4 checker box as the other spare parts.

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5) TYPE4 checker details

USB2.0 port (Type-B)

For communication with Windows PC or power
supply by PC USB port or AC adapter (5V)

D3-NET connection
port
Main switch

Main switch Red colored LED will lit if you toggle this switch.

Connecting to Windows PC by USB cable. This port is for power supply (5VDC)
USB 2.0 port
from PC USB port and communication with PC.
(Type-B)
* Please use the USB cable which is included in the TYPE4 package.
Connection port for D3-NET communication cable.
D3-NET connection (This is not for power supply terminal, please do not apply power line. If you
port connect power supply to this port, TYPE4 Checker box will be broken and
burnt.)

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1-2 Preparation

Preparations for materials to be necessary for VRV operation data recording will be explained in this section.

1-2-1: Essential materials (TYPE4 checker)

1-2-2: D3-NET cable

1-2-1 Essential materials

Standard components which are required for VRV operation data recording are below.

1. TYPE4 Checker box (Part number: 999176T)

(1) TYPE4 Checker box

(2) USB cable

Connection cable for connecting Checker and PC

(USB Type B - USB Type A)
: standard USB cable

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1-2-2 Other materials to prepare

1) Required PC specification
•PC type
• Windows PC
• CPU 1GHz+, Memory 2GB+, HDD 20GB+
• Windows7 SP1 or later, Windows 8.0 /8.1 /10
• USB port

2) D3-NET connection cable

D3-NET connection cable does not come with TYPE4 Checker package. Please prepare below cable to connect
TYPE4 Checker and VRV D3-NET port.
(1) Prepare the following signal wires. (Refer to the below notes.)
When connecting to an outdoor unit, it is appropriate for the signal wires to have 2 m in length. When
connecting to an indoor unit or wiring indoor from the outdoor unit, it is possible to lengthen the signal wires
within the limits of the D3-NET length.

For control signal wiring, use vinyl cords or cables with two-core and sheathed as follow.
• Vinyl cabtyre cylindrical cord VCTF JISC3306
• Vinyl-insulated vinyl sheathed cable for control CVV JISC3401
• Vinyl-insulated vinyl sheathed, cylindrical cable for control CVS JISC3401
• Vinyl-insulated vinyl sheathed, cylindrical cable VVR JISC3342
• 600V vinyl cabtyre cable VCT JISC3312

Cautions:
1. Do not use multiple-cored wires with 3 cores or more.
2. Use wires with a cross section of 0.75mm2 -1.25mm2.
3. Do not make wires bound in control- signal wiring. Do not make long-distance wiring by having signal wires
bound packed with tapes, tie-laps and the like.
4. Wire the signal wires away from power lines to prevent the effects of electric noise. Since Daikin’s air
conditioners and related products will generate much lower electric noises, it allows to have a distance of
minimum 50mm between the power lines and the control signal wires.

(2) D3-NET connection terminal specification of TYPE4 Checker

For D3-NET communication wire connection, wire terminal listed

below are recommended (M3 type screw is used for terminal)
• R1.25-3 (JIS)
• R1.25-3.5 (JIS)
• R2-3.5 (JIS)
In case of use circular shaped wire terminal, please select wire
terminal which fits this terminal block.

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1-2-3 Required to do before recording

After finishing preparation of materials, further preparation is needed for executed as the listed procedure.

1) TYPE4 software installation (setup)

2) Connecting PC and Checker
3) Confirmation of connection
4) Check of supported models

1) TYPE4 software installation (setup)

Following the instruction of Chapter 2 (Installing the checker software), install checker software.

2) Connecting PC and Checker

Connect PC and Checker by the USB cable included in the Checker package.

PC
Checker box (Back: USB 2.0 terminal (Type-B))
USB cable
(included)

A connector B connector

3) Confirmation of connection
To avoid troubles such as PC and Checker connection, please check connection between PC and Checker as
instructions listed below.

[How to confirm]
Connection check can be done without connecting checker and VRV.

[Confirmation procedure]
•Connect PC and Checker, turn on Checker
•Start Checker software
•Select correct COM port which is connected to Checker (default selection is COM1)

(1) Click Setting(S) > Port(P)

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(2) Select COM port to be used in Select Port window

Click top box and select COM port number to use.

Please select COM port number which shows “Silicon Labs
CP210x USB to UART Bridge” in the 2nd box.
COM port number is different from PC.

(Note) In case of no COM port with “Silicon Labs CP210x USB to UART Bridge”

It is necessary to install USB port device driver.

Please obtain correct device driver from vendor website.
https://www.silabs.com/products/development-tools/software/usb-to-
uart-bridge-vcp-drivers

(3) Click OK button to proceed.

• Press “Record” in main menu

• Click “Record only” in Customer Selection window
• Enter any names in network map name box and press OK button to proceed.
• Please below check in network map window.

[OK case]
Wait for about 10sec, if there will be no [Not OK case] messages shown, connection is OK.

[Not OK case]
Wait for about 10sec, if there will be messages like “Port could not be opened”, “It could not be started, please
check connection” are shown, communication was not executed correctly. Please go back (exit) once and
check COM port setting in option menu. Then please check again.

4) Check of supported models

[Supported model list]

•In HELP menu of Checker software

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Chapter 2: Installing the checker software

2-1 Obtainment of software (new/update)
Please obtain checker software from your national Daikin distributor webpage or ask your local Daikin national
distributor.
(Reference) Daikin global webpage
https://www.daikin.com/products/ac/services/index.html
•Software update
When new VRV models introduced, it could be necessary to update checker software to check operation data of
new model.

2-2 Installation procedure

1) Please download from your national Daikin distributor webpage and execute installation file on your PC
folder (Setup_Checker4.exe file).
2) Installer program will start.
Installer checks older version of TYPE4 checker software on your PC.
If your PC has older version, installer asks you to proceed or not.

Contents of the unzipped folder

Installer asks you to proceed, please press OK button to proceed.

Installation process would take a couple of seconds to finish.

Please press Close button to finish installation.

If your PC does not have .NET Framework

4.6.2 or higher version, installation will be
requested. Please download an installer
from Microsoft webpage and install.
(current latest Windows10 OS has .NET
Framework 4.8 built-in)
A shortcut of the program will be created on the desktop
after installation.
Installation folder is:
C:¥Users¥[username]¥AppData¥Local¥Checker4

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2-3 Removal of software

To remove the TYPE4 checker software, you just need to delete the folder in your user area of PC. Typically it is
installed in the folder location listed below.

C:¥Users¥[username]¥AppData¥Local¥Checker4

If you would like to remove all files from your PC, please just delete Checke4 folder.
If you would like to keep recorded data, keep C:¥Users¥[username]¥AppData¥Local¥Checker4¥D3Data folder.

Operation data Program files

(*das file) (exe file)

If your PC has older version of TYPE4 checker software such as V1.2.2.1, please uninstall from control panel.
(Older version can coexist with newer version if you would like keep older version.)

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Chapter 3: Connecting to the unit

[Warning]
In case of long term logging or using in the outdoor under rainy weather, please take appropriate
countermeasure for protection from rainwater to avoid electric shock or fire.

3-1 D3-NET (F1,F2) connection

USB cable (included) VRV

TYPE4
PC checker box
D3-NET connection wire

[Connection procedure]

(1) Connect with D3-NET connection wire prepared in 1-2 Preparation part in this manual.
Please connect wire to D3-NET terminal of checker first. (If connect to D3-NET terminal of VRV and F1-F2
will be short-circuited, unit could be damaged)

(2) Connect another end of D3-NET connection wire to communication terminal (F1-F2) of VRV unit.

[Warning]
Please connect to communication terminal of VRV (outdoor unit or indoor unit) or centralized
controller. If it would be connected to power terminal, there is a possibility of fatal accident by
electric shock or damage of the unit.

[Caution]
1. It’s not necessary to correspond F1-F2 of the transmission terminal of VRV to F1-F2 of the
checker like F1-F1 or F2-F2 respectively (no polarity).
2. Recommended connection point of VRV unit is F1-F2 terminal of OUT-OUT connection of outdoor
unit, but it can be connected to indoor unit or centralized controller.
3. In case of connecting to indoor unit, please connect to the last indoor unit of the line to avoid
sub-branching.
4. To extend wiring length (up to hundreds of meters), it could cause affection to the unit’s
operation. Please be aware of electric interference such as taking enough distance from power line.

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[Caution before using]

•When connecting to the VRV unit for the first time, the unit will change to stand-by mode for several minutes to
scan all the connected indoor and outdoor units. The system will automatically resume after finishing auto-
scanning (for 2nd time and onwards, system would not enter stand-by status by choosing saved network map).

•Data refresh interval depends on the refresh interval of connected VRV model (normally between 1 min to 5
min) regardless of data saving interval setting of checker software.

•In case of DTA109 adapter (D3-NET expander) is installed, Checker cannot collect operation data beyond the
point of DTA109 (for example, if you connect Checker in main bus, operation data of VRV systems in branch bus
cannot be monitored).

•If Wiring Adaptor for Electrical Appendices (1) or (2) (KRP2A or KRP4A) are installed to the same D3-NET line, an
error will be displayed to BMS or other centralized control system. To avoid this error, it is necessary to prohibit
centralized control function of checker software (see 7-3-2 Prohibit/permit centralized control).

3-2 Connection power supply

[Procedure]
(1) Please connect your PC to Checker USB port (Type-B) by the USB cable which came with Checker package.

[Caution]
Power is supplied from USB terminal. Do not connect AC power to D3-NET (F1,F2) terminal.
(If AC power is connected to the D3-NET port, checker will be burned and broken.)

(2) Please switch the Checker on. Red LED will be lit on power switch.

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Chapter 4: Overview of the checker software function

4-1 Start up the checker software
After installation of checker software, icon will be added to the Windows start menu.

[Procedure]
1) From (Start[ button, select [Program] and select checker software.
[ Windows 7 ] [ Windows 10 ]

2. Select “Daikin Service Checker TYPE4”

2.Select “Daikin Service Checker TYPE4” under Daikin folder

1. Click Start button

1. Click Start button

2) Checker software starts up and shows the main

menu shown left.
(It looks same for both Windows7 and 10)

4-2 Quit the checker software

There are two ways to quit checker software.

1) Click “X” button on the top right corner.

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2) By selecting “Setting”>”Exit”, checker software can be quit.

3) By pressing F12 key on your PC, below dialog will appear. By pressing Yes button to exit the program.

4-3 Overview of the checker software function

There are buttons listed below are in the checker software main menu.

Use for monitoring/recording VRV operation data

[Record]
(Refer to Chapter 5)

Use for checking/exporting recorded data

[Play]
(Refer to Chapter 6)

Use for exporting/importing recorded data or customer information

[Data Transfer] to/from other users or PC.
(Refer to Chapter 7-1)
Use for enter/edit customer information (please enter customer info for all
[Customer data] the time). Saved network map information can be checked here.
(Refer to Chapter 7-2 and 6-2)

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Chapter 5: Recording operation data

By [Record] menu, VRV operation data monitoring and recording (collecting data) can be executed. It is
necessary to use this menu if case of only monitoring operation data without recording.

Customer Network map Operation data

As shown in the right chart, data is managed as
tree structure. From the top, data is System1: Mar.23
categorized as “customer”, “network map Building E 1st floor System2: Mar.23
(system)”, and “Operation data”. :
Customer
A System1: Apr.2
Building E 2nd floor
:
: :
Customer : :
B
: : :

(Note) “Record only” without data management can be selected, it is recommended to use customer
information for better management of each data.

5-1 Viewing operation data

5-1-1 Customer info selection

[Procedure]
(1) In main menu, click [Record] button. Proceeding to [Customer selection]

Click [Record] button

(2) Customer selection screen

Please enter customer information. Data recording can be executed without entry of customer information
(Record only)

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• Press [New customer] to record data for a new customer with registration of customer information.
Proceeding to [Customer data input] screen. Please proceed to (3)
• To use existing customer information, please select desired customer and press [Select customer]
button to proceed [Network map selection] screen. Please proceed to (4)
• To use edit and use existing customer information, please select desired customer and press [Edit cust.
Data] button to proceed to [Edit cust. Data] screen. Please proceed to (3)
• In case of recording only without customer information management, please press [Record only]
button. Please proceed to (5)

(Note)
1. In case of [Record only], operation data will be overwritten every time. Please be aware.
2. In case of [Record only], VRV system will stand by every time. So it is recommended to enter customer
information to avoid unnecessary system stand-by.

• To delete existing customer, please press [Delete customer] button

• To return to main menu, please press [Back] button in the bottom left corner.

(3) [Customer data input] screen. Please enter customer information.

• [Customer ID] is mandatory field

• [Customer name] is used in [Operation data
selection] screen, so please use clear name.
• For the other items, please enter in case of
necessity.

After entry of all information, please press [Save] button. By pressing [Select customer] button,
you can go to [Network map selection] screen. If you need to return without saving, please press
[Cancel] button.

(4) [Network map selection] screen

Select desired network map (D3-NET line name).

Select [New] or {OK] to use selected existing map.

(Note)
1. It is possible to manage multiple network map info under one customer name.
2. One D3-NET line is managed as one network map, but it is necessary to mange D3-NET line which is
split by DTA109 as different network map.

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• If there is network map which used for operation data recording in the past, please select desired
network map and press [OK] button to proceed to [Network map] screen. Please proceed to [5-1-2:
Network map display]
• Even if in the site where you have recorded operation data before, if you are connecting to the
different D3-NET system please press [New] button. Please proceed to (5)
• To change the name of existing network map, please press [Edit map name] button. Please proceed
to (6)
• To delete existing network map, please press [Delete] button
• To return, please press [Back] button

(5) Confirmation screen for new connection

In case of first time connection to D3-NET, connected system will be in stand-by status to obtain line and
model (series) information from D3-Net with notification screen shown above. If the system can be
changed to stand-by status, please press [OK] button to proceed to (6)

(Note)
1. By pressing [OK] button of (6) [Edit map name screen], system will be in stand-by status and will be
thermostat-off for several minutes.
2. If you use existing network map which was created before, confirmation screen would not shown for
the 2nd time.

(6) [Edit map name] screen

1) Enter network map name (mandatory)

2) After entering appropriate network map name, please press [OK] button to proceed
[Network map display] screen. Then proceed to [5-1-2 Network map display]. Please press [Back]
button to return.

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5-1-2 Network map display

Data will be collected upon the confirmation of previous screen.

Status of data collection will be shown as icon in the network map.
Checker software scans connected equipment in the D3-NET line for several minutes.

(Note1)
•Without initialization of D3-NET line after adding/removing outdoor unit, indoor unit, BS unit or replacing
control PCB, network map cannot be shown. In those cases please carry out D3-NET initialization before
using checker.
•In case of system stand-by is not allowed, please use past existing network map or carry out in the hours
system stand-by is allowed.

(Note2)
•If you change date/time setting of PC after the point of [Network map display] screen, the order of
recorded data could be mixed up and would not be recorded correctly. To avoid such an issue, please do
not change date/time of your PC during recording the data.

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[Network map display] screen

(1) How to read this screen

• In this screen, outdoor and indoor units are shown as icon in the display order of auto-
address
• Icon color will change by status of units

Color Status
In unit error
Red

In communication error
Violet

Indoor unit: Running

Green Outdoor unit: Thermostat-on

Indoor unit: Stopping

Gray
Outdoor unit: Thermostat-off

White In case of unit model (series) not detected with the number of units were
identified. For the first several minutes system is in this status during auto scan.

• In [Cent.] box, centralized group number is displayed. But this info is only sent while map is created, so
this info cannot be shown if you used existing map.
(if you entered group number in [Detailed data input], entered group number is shown.)
• In [Airnet] box, Airnet address is displayed.

(Note)
1. If the color of icon is white, units are under detection. Operation data would not be displayed until completion
of unit detection period will end. Please wait for until all icon will change to the color other than white.
(If you start recording one of icon is still white (not recognized), data would not be recorded for those units)
2. [System] in the upper left corner means refrigerant circuit basis. It is possible to collect operation data of
multiple refrigerant circuit system.

(2) If it is not possible to display all units or system in one screen, please press [System] or
[System] button in the bottom left corner in the screen to move the screen in vertical direction.

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5-1-3 Switching modes

Buttons in the bottom row of the screen can be used by switching modes by buttons on the upper row
at first then is pressed to execute desired function.

A. Map mode
Map mode
Detail Data Input Centralized operation Update map

[Detail Data Input]

Press to enter detailed information such as model name or installation place. Please proceed
to “5-1-4 Detailed info input”
[Centralized operation]
If the centralized group numbers have been set, centralized control of indoor units can be
executed. Please proceed to “5-3 Centralized operation”
[Update map]
Please press in case of addition/removal of the units or replacement of control PCB. Network
map information will be acquired again to update.

(Note)
Units on the same D3-NET line will be in stand-by status (thermostat-off) for several minutes.
Please be aware of that. After completion of this sequence, system will resume automatically.

B. Display mode
Display mode
Disp. op data Disp. Q’ty

[Disp. op data]
Proceeding to [Operation data display] screen to check operation data of selected system.
Please proceed to “5-1-5 Operation data display”

(Note)
Please proceed to Operation data screen after all icons turn to the
color other than white.

[Number of units display]

Showing the number of connected outdoor and indoor units.

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C. Record mode

Record mode
PC rec set PC rec start

[PC record set]

Proceeding to “PC record set” screen and setup data recording to PC data drive.
Please proceed to “5-2-1 Setup PC recording”
[PC record start]
By pressing this button, data recording to PC drive will start. On the upper left screen, “Period
Rcd” sign will be indicated. Button will change to “Period. rec end”, by pressing the button
again to stop recording.

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5-1-4 Detailed info input

Detailed information such as installation place for each unit (icon).
With this information, it becomes easier to identify each unit after second inspection onwards.

(1) Select system

(2) Detailed info entry box

(3)Save changes
(4) Discard changes and revert
(5) Close
to the original info

In [Network map display] screen, by pressing [Detail Data Input] button in [Map mode], this screen
will appear and detailed information of corresponding system can be entered.

[Procedure]
(1) Please select corresponding unit from the drop down list in the upper left corner. The order of indoor unit
is the order of auto address.
(2) Please enter each item in [2. Detail data input]. Each item should be entered based on its necessity.

Item name Description

System System number is displayed
(change not allowed)
Aircon Air conditioner name is displayed
(change not allowed)
Install site (name) To provide information of installation place.
Model No. To provide unit serial number
To provide unit model name.
Rough category of product is pre-set. To provide more details, please select
Model name
from list or enter info manually. Indoor unit does not have pre-set names
so please enter name manually.

To provide centralized group number. Automatically acquired only during

Centralized address making new map. You can enter manually.

Auto address Automatically acquired. In [Network map display] screen, icons are listed in
(change not allowed) the order of this address.

Airnet address Automatically acquired. Address for Airnet is displayed in case of being set.
(change not allowed)

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* If you hit the ENTER key when the editable items such as Install site (name), Model number, Model name,
or Centralized address is highlighted, next (right) item will be highlighted.
(from centralized address, install site of next line will be selected)
If you hit SHIFT+ENTER key, previous item will be highlighted.
(from install site, centralized address of previous line will be selected)

If you double click install site (name), Model number, Model name, or Centralized address, edit window
will be popped up.

Model name and centralized address can be selected from the candidates of drop down list. You can edit
them directly. When you finished the editing, please press OK button. Edited information will be applied. If
the centralized address was invalid, error message will appear.

* Even if the OK button is pressed, changes would not be saved to you PC. When Save button will be pressed,
changes will be saved to your PC.

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(Note)
•Once you replaced control PCB, auto address of network map will change.
•If you updated map, location of detailed information will move from appropriate place because
detailed info of each unit is stored in the order of auto address. To correct this situation please re-
arrange detailed info as the procedure instructed below.

(1) After updating the map, by double-clicking install site, Model number, Model name, or Centralized
address, detailed data of the network map before updating will be displayed in [Detail Data Input]
window.
(2) Select information which should be overwritten, then info will be listed in the first line of the
window. Please check and press Confirm button.
* Just by pressing the Confirm button, changes would not be finalized yet. By pressing Save button
which will be described by (3), then changes will be saved.

(3) Information entered please press [Save] button. If centralized address is invalid, error message will
appear.

(4) Discard changes and revert to the original info: information will be reverted to the original content.

(5) After finishing input, please press [Close (esc)] button to return to [Network map display] screen.

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5-1-5 Operation data display

[Operation data display] screen
In [Network map display] screen, by pressing [Disp. op data] in [Display mode], operation data will be
shown for selected system. 1 screen per 1 system will be shown.

(1) Analog data graph

(3) Present value of each

parameter

(2) Digital data graph (4) Inspection sheet display You can jump to the other
unit in the same system

(1) Analog data graph (upper left)

•Showing time in horizontal axis, percentage from full scale (-20% - +100%) in vertical axis. The full scale value
of each parameter is shown in the right most column of present value chart in the right. Please check them by
scrolling the chart. At 100%, data is at full scale value.
•Number and color of graphs are corresponding to the number and color of square (□) in the left most
column of present value chart in the right.
•Up to 8 items per unit can be displayed.
(2) Digital data (ON/OFF status) graph (lower left)
•In case of ON status, blue bar is shown.
•Number of each bar corresponds to the number of each parameter of present value chart.
•Up to 8 items per unit can be displayed.

(Note) About cursor (vertical line in the graph)

1. To display operation data from record mode, cursor is not displayed initially. The latest data is displayed
in each box in (3) present value chart.
2. If a connected system is supported model by inspection sheet output function, by clicking on the graph
area (or cursor move button), cursor will be displayed and parameters at the time of cursor indicates
are shown in the (3) present value chart.
3. If a connected system is not supported model by inspection sheet output function, cursor would not be
shown and status remains at 1.
4. In case of showing operation data from display mode, cursor will be shown initially in the middle of
graph.

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(3) Present value chart of each parameter (list on the right)

Listed item Description

(far left column) Colored square (□) is shown for parameter in the graph
From lest, [data number], [classification of outdoor/indoor and number], [item
Data item
name] are displayed
Operation data value is shown
Data
In case of D3-NET connection, data refresh interval is in several minutes (1-5 min)
Time of data updated is shown
Last modified
In case of D3-NET, some are updated in several minutes interval
Full scale The value of 100% scale of each analog data

• Per unit, 8 analog data and 8 digital data can be displayed in the graph. Please select a desired
parameter and click it again to show. Data will be shown in the graph screen with a colored square (□)
will appear in the far left column.
• By clicking same data on the graph will hide it from the graph.

(Note) About data item

For small capacity models, there could be some sensor or actuator data which are not equipped. Please
ignore those parameters. For more details please refer to service manuals.

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(4) Inspection sheet display (4-2) Reloading data in

the sheet (4-3) Outdoor unit info and
(4-1) Excel file data acquisition time is shown
export

(4-4) Manual
input boxes

(4-6) Auto filled from

checker data

(4-5) Select judgment

result

(4-7) Switch
between outdoor
units

(4-1) Excel file export

Inspection sheet will be exported as Excel file format.
If no Excel software is installed to your PC, Excel file export function would work.

(Note) About the position of “circles”

If you open exported Excel file, “circle” symbol selected in the Judgment box might be in the offset position
based on the Excel version.

(4-2) Reload data

Reloading selected data in [Operation data display] graph and updates inspection sheet values.

(4-3) Displaying outdoor unit information listed below

•Unit No.: For some models, unit number of outdoor unit is shown.
•Model No.: Displays outdoor unit number (e.g. O-2 = outdoor unit 2)
•Data time: Time of data acquired in [Operation data display] graph

(4-4) Manual input box

•Data box in pink background is required to enter/select manually.
•After clicking once, you can enter necessary values.

(4-5) Select judgment result

•For judgment result area, you can select and put circle by clicking YES or NO.
•Values cannot be entered manually (YES/NO selection only).

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(4-6) Auto filled from checker data

•Data box in pale blue background are data which would be filled automatically.
•Upon creating inspection sheet window or clicking “(4-2) Reload data” button, selected operation values in
[Operation data display] screen will be reflected.
•By clicking you can enter values manually.

(4-7) Switch between outdoor units

•Inspection sheet per outdoor unit will be displayed.
•You can switch between outdoor unit by selecting tab.

(4-8) Supported model (May, 2019)

VRV3 (HP, HR, Q, W, S)

VRV4 (HP, HR, Q, W, S, i)
VRV5 (VRV-A, X, H, VRV4-U)

(5) By pressing [X] button in the upper right corner, return to [Operation data display] screen

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5-2 Recording setup

5-2-1 Setup recording

In [Network map display] screen, by pressing [PC. rec set] in [Record mode], [PC record set] screen
will appear.
[PC record set] screen

1. [Record mode] button

2. Press [PC rec set] button

3. Set recording options here

[Procedure]
(1) Set [1. Record interval], [2. Record stop method], [3. Record system select]

Set item Description

• Select record interval for writing data to PC data drive. Unit is second (5, 10, 20,
30, 60, 120, 180, 300, 600 sec)
• Normally 20sec as default set is recommended because shorter interval takes
more disk space.
1. Record interval
• To record data more than days, it is recommended to set interval as 120-300
sec to reduce data amount.
Interval is time in between each record to be stored in PC hard drive but data
update interval depends on specification of VRV units.
Please specify how to stop recording.
2. Record stop Manual: Recording continues until [PC rec end] button is pressed.
method Auto: Recording will end after the time specified in [Recording time] box. Please
enter recording time in “minutes”.
• It is possible to select record/not record by system basis. You can select
3. Record system multiple systems.
select • Select check box for each corresponding system and click to check/uncheck.

(Note)
Data update interval differs from model but normally it is fixed at between 1 to 5 minutes (this value
cannot be changed by checker because it is defined by unit). So if you shorten recording interval to
very short time such as 5 sec, same value would be recorded in multiple times.
* Actual data updated time is displayed in present data chart in the right.

(2) To save changes, press [OK] button. To cancel changes, press [Cancel] button to
return to [Network map] screen.

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(3) To start periodic record to PC data drive, press [PC rec start] button in [Network map] screen. “PC
Red.” sign will be indicated in the upper left corner. Besides button will be changed to [PC rec end]

“PC Rcd.”

Press [PC rec start] button

Changed to [PC rec end]

(4) If you need to manually stop periodic recording, press [Period. rec end] button. If you select [Auto] in
[Record end method], recording will end in the set time automatically.

(5) In case of disconnection of communication with TYPE4 Checker box, [Communicating(Error)] will be
shown. Please check connection and retry recording.

[Communicating(Error)] display

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5-3 Centralized operation

Checker software has centralized operation function.

It is possible to do centralized operation from checker software instead of centralized controller.
To execute centralized operation, centralized group number needs to be set to desired indoor units
beforehand.

(Note)
If the centralized group number is not set yet, it is necessary to set them.
Connect TYPE4 checker box to D3-NET line and setup customer information from checker software, please
show [Network map display] screen. With this condition, centralized operation will be possible if you set
necessary centralized group number by indoor unit remote controller.

In [Network map display] screen, press [Centralized operation] button in [Map mode], [Centralized
operation] screen will appear.

1. [Map mode] button

2. Press [Centralized operation] button

[Centralized operation] screen

Color Status

Red Error
Violet Comm. Error
Green Running
Gray Stop

• In this screen, indoor unit which can be controlled centrally are listed as icon in the order of
centralized group number.
• Icon color will change based on the status

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[Procedure]
(1) Select desired indoor unit icon and execute centralize operation such as alteration of set values, etc.

Button, box Description

Run Start selected unit
Stop Stop selected unit
 Change setpoint, range of value is 0 to 35.
* If specification of unit has value range of 16-32, even though you changed
 setpoint at 35 by  button, value would change to 32 in a few seconds later.
Cool Change operation mode to cooling
Heat Change operation mode to heating
Fan Change operation mode to fan only (ventilation)
Error code In case of error, code will be indicated here
In the right side of this screen, status is indicated as remote controller shows.
[Under center control]
Master centralized controller does not allow slave controller. No centralized
operations can be done by checker.
[Under forced stop]
Under status of forced stop control. No centralized operations other than stop
command by checker.
Right side
of screen [Under centralized control]
If other centralized controller has prohibited the operations of indoor units from
manual operation by a remote controller, this sign is displayed on each indoor
unit. The indoor units are not possible to operate other than stop.
[Under operation shift control]
In case of remote controller group or a Cool/Heat selector is connected to
outdoor units, this sign is displayed when selecting an indoor unit impossible to
change operation mode.

(2) To exit this screen, press [Close] button.

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Chapter 6: Playback of recorded operation data

6-1 Playing operation data
[Procedure]
(1) In main menu, press [Play] button to proceed to [Customer data selection] screen.

Press [Play] button

(2) Please select desired operation data and highlight.

Select desired data to open

[Disp. op data]
Showing operation data, please proceed to (3)
[CSV data output]
Exporting csv format data, please proceed to [6-3: CSV output]
[Delete]
Removing operation data
[Back]
Return to main menu

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(3) Operation data display screen

* Details of operation data display, please refer to

“5-1-5 Operation data display”. If you click on the
graph area, parameters on that time will be listed
on the right. Buttons listed below will work for the
graph displayed on the left.

Buttons
(see below for details)

Button Description
<--> Magnify Make time scale (X-axis) of the graph smaller (short time line)
-> <- Minify Make time scale (X-axis) of the graph larger (long time line)
< -- Go back Move timeline to backward (50% of X-axis time scale)
-- > Proceed Move timeline to forward (50% of X-axis time scale)
<- Left Move cursor (vertical line) to the left
-> Right Move cursor (vertical line) to the right

(4) Max/Min value of analog data and error code can be searched (digital data cannot be searched).
Present value list in the right, click to highlight desired data item and press [Search] button.

1. Select desired data

2. Press [Search] button

(1) Analog data (2) Error code

Enter search threshold value Check operation data with error code

[Search from top]: Search from the first of operation data

[Search next]: Search from the point of cursor
[Cancel] : Return to operation data display screen

(5) By pressing [Close] button to return to [Customer selection] screen

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(6) Inspection sheet can be created by pressing button in the bottom of this screen.

Create inspection sheet

• Please refer to [5-1-5 Operation data display] for details of inspection sheet

(7) By pressing [Close] button to return to customer data selection screen.

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6-2 Viewing customer/network map information

Customer information and network map (system/line information) can be checked by recorded data. By
this data, it is possible to check customer/customer’s VRV system, model information stored in PC.

[Procedure]
(1) In main menu, press [Customer data] button to proceed to [Customer selection] screen.

Press [Customer data] button

(2) Customer selection screen

Press [Select customer] button to proceed to [Network map selection] screen

Press [Select customer] button

(3) Network map selection screen

Select desired map and press [OK] button to proceed to [Network map display] screen

2. Press [OK]
1. Select desired map

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(4) Network map display screen

[System], [System]: Move between systems

[Detail Data Input]: Press in case of model/installation place info input
Please proceed to [5-1-4 Detailed info input]
[Back]: Return to [Network map selection]

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6-3 CSV output (export function)

To utilize recorded data by the other software such as Excel, data export to csv format is supported.
*CSV format: comma separated value data

[Procedure]
(1) In main menu, press [Play] button to [Customer data selection] screen

Press [Play] button

(2) [Customer data selection] screen

Select desired data and press [CSV data output] button

2. Press [CSV data output] button

1. Select data

(3) [CSV output setting] screen

After output data period, header data relevant settings, press [OK] button to proceed.

After settings, press [OK] button

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CSV file output period setting

All data output All recorded data will be exported to csv file
Narrow down data period which will be exported to csv
Select Output data
(reduction of export time and file size)
Header data setting
ON Export site, equipment, data information header to csv file
Data only export without header rows (good for auto process by
OFF
the other tools)

(Note)
1. CSV file will be exported 1 file per unit (both outdoor/indoor)
For example the system with 1 outdoor unit and 8 indoor unit, 1 csv file for outdoor unit and 8 csv
files for indoor units will be exported.
2. If recorded period is too long to store all data in one csv file, it could be exported in multiple files.

(4) [Save As] screen. Select location to save and enter file name, then press [Save] button

File name rule

1. Select location to save
Specified file name_Ou01.csv
: for outdoor unit
2. Enter file name Specified file name_In01.csv
: for indoor unit
3. Press [Save]
(number will differ based on the
button
connected number of units)

(5) During CSV file export, below screen is shown

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Chapter 7: Other functions

7-1 Data transfer
Recorded operation data or customer data can be transferred or sent by the storage media such as USB stick
drive. To execute this, [Data transfer] function is used.

(Note)
•Data can be copied directly from PC folder location by Windows explorer, it is not easy to locate them so it’s
much more convenient to use this function.

[Procedure]
(1) In main menu, press [Data transfer] button to
proceed to [Data transfer] screen

Press [Data transfer]

button

Select location to/from copy

(2) Data transfer screen

• Left side is data list which checker stores in your PC (fixed).

• Right side is destination to/from transfer. It is possible to select folder name.
• Unit of transferring data is;
1. Operation data and customer info
2. Customer info only
* Network map information is included in customer information.

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1. Transfer operation data and customer information

Exporting data (to storage media)

1. Select operation data or customer information on the left to transfer.
2. Select destination folder in the right side of the screen.
3. By pressing right arrow [] button to start transferring.

Importing data (from storage media or folder)

1. Select operation data or customer data information on the left as importing destination.
2. Select origin folder in the right side of the screen.
3. Select operation data to import from the right.
4. By pressing left arrow [] button to start importing.

* If there are same name of operation data in the destination, below dialog will be shown.

[Yes] : Overwrite this data only

[Yes to all] : Overwrite all data to import
[No] : Not overwrite this data and skip to next data
[Cancel] : Abort transferring operation

* If there are same name of customer data in the destination, below dialog will be shown.
Meanings of each button are same as above.

2. Transfer customer information only

Other than selecting [Customer data] on the upper left, procedures are same as 1. Transfer
operation data and customer information.

(3) Press [Cancel] button to exit

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7-2 Customer information

Checker software manages operation data by customer basis. Therefore customer ID is mandatory
field to enter in customer information. If the operation data is recorded from [Record only] without
managing data by customer information, every time VRV unit will be D3-NET initialization status and
thermostat-OFF condition. So customer information management is highly recommended.

(Note)
Other than [Customer data] menu, customer information can be entered from [Record] menu.

[Procedure]
(1) In main menu, press [Customer data] button to proceed to [Customer selection] screen.

Press [Customer data]

(2) To create a new customer, press [New customer] button to proceed to below screen.

• To edit existing customer information, select

desired customer and press [Edit cust. Data]
button.
• To remove existing customer information,
press [Delete customer] button

(3) [Customer ID] is used for distinguishing customer, please enter in alphanumerical characters.
(4) [Customer name] is displayed in [Operation data selection] screen etc. It is highly recommended to enter.
(5) Other items are entered based on their necessities (they are not mandatory fields).
(6) After finishing entry, press [Save] button. Return without saving, press [Cancel] button.

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7-3 Option setting

7-3-1 Setup COM port

Selecting communication port which is connected to checker.

On PC side, installed (available) communication ports are managed as COM number. Please use appropriate COM
port number to communicate. Default selection is COM1.

If this setting is not correctly done, communication error

takes place. (see [1-2-3 Required to do before recording] for
more details)

(1) Press [Port(P)] in [Setting(S)] menu

(1) Select COM port to use

Click the top box (list) and select COM port from listed port
number. From listed COM port numbers, please select COM
port number which comes with “Silicon Labs CP210x USB to
UART Bridge” in the middle box.

Note) In case of no COM port with “Silicon Labs CP210x USB to UART Bridge”

It is necessary to install driver files of USB serial port.

Please obtain appropriate driver installer files from your national Daikin
representative, or could be downloaded from below URL.
https://www.silabs.com/products/development-tools/software/usb-to-
uart-bridge-vcp-drivers

(3) Press [OK] button to save changes

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7-3-2 Prohibit/permit centralized control

It is possible to stop sending centralized control command from checker by this setting.

Checker has a centralized operation function, it regularly transmits data as a centralized controller to the
connected D3-NET line.

To prohibit centralized control by this function, data transmission as centralized controller can be
stopped by checker.

This setting can be changed from the menu

shown left.

Default set value is “Permission”

Besides, this setting is reverted every time

software starts up back to default value
(Permission). Changed value would not retain.

*After restarting software, set value would

change to “Permission”, if you need to continue
“Prohibition” it is necessary to change this setting
every time.

[Purpose of this function]

1) It cannot be added any devices which might cause influences to D3-NET communication. In case of a lot of
units connected to the same D3-NET line and communication is very busy, but it is necessary to capture data
without affection to D3-NET.
2) Under circumstance of no centralized controller is allowed to connect, but it is necessary to capture data.
Or existing supervisor controller such as BMS controls VRV units by KRP2A or KRP4A. (see Q-101)

[Limitations]
If the centralized control function is prohibited, limitations listed below will apply.

1) No centralized control can be done from [Centralized control] screen.

2) No new data acquisition can be done because D3-NET initialization to obtain unit information. (in case of
connecting checker to systems for the first time, at first temporarily permit centralize operation and create a
new network map. Then prohibit centralized control again.)

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7-3-3 Change display language

GUI language can be switched in between Japanese, English, and Simplified Chinese. Change will take effect after
restarting the software.
(By change of language, some units could not be correctly monitored due to model info incompatibility)

Change GUI language from [Settings] >

[Language]

7-3-4 Change display unit of measure (temperature/pressure)

Unit of measure (temperature/pressure) can be selected from Celsius;kgf/cm2 or Fahrenheit+psi.

Others: Changing window size

Operation data windows size can be changed by mouse operation.

(display area ratio of graph/present data chart cannot be changed)

Window size can be

adjusted by mouse

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7-4 Help function

By help function, information listed below can be checked.

(1) Help Display help screen

(2) Support models Supported model list can be checked by PDF file.
(3) Version Software version

1) Help
Showing help (manual) screen Help

2) Supported model
PDF viewer

3) Version info
Software version can be checked

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Frequently asked questions

 D3-NET related topic

[Q-101]
Error is generated if checker is connected to the system which Wiring Adaptor for Electrical Appendices (1) or (2)
(KRP2A or KRP4A) adapter is installed.

[Phenomenon]
The other supervising system (BMS) controls VRV via Wiring adapter for electrical appendices and checker is
connected to this system, supervising system causes air conditioner error.
[Cause]
Wiring Adaptor for Electrical Appendices (1) or (2) (KRP2A or KRP4A) cannot coexist with the other centralized
controllers because centralized controller’s operation command conflicts with the commands from the supervising
system. Checker has centralized controller function, adapter sends status of centralized controller conflicted
condition to BMS. This error itself is just a warning and does not affect operation of VRV system, but BMS system
recognizes error status and record it in its history. Besides VRV system will be in restart stand-by (thermostat-off)
due to connection of checker to the D3-NET line. As a result, it looks like VRV system stopped by error due to
connection of checker.
[Countermeasure]
By connecting checker, error will be submit to supervising system. But VRV system itself is not affected and can be
running without errors. After the removal of checker, alarm on supervising system will stop. In this case
countermeasures listed below are possible to take.

1. Asking customer to ignore alarms while checker is connected (in case of short term connection).

2. Using checker option “Centralized operation prohibition mode”

If a network map is already made before, checker can be disabled to work as a centralized controller by this
option (please be aware every time checker software is launched it is necessary to change this option).
Please refer to [7-3-2 Prohibit/permit centralized control]

3. Cut J5 wire of KRP4A adapter PCB to kill alarm related to function for duplication of centralized controller.
*Please be aware if this wire is cut, duplication of centralized controller can no longer alerted.

Cut this wire

(J5).

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 Software related topic

[Q-201]
About software update

[Countermeasure]
Download update software from DIL business portal site.
https://global1d.daikin.com/business_portal/login/

[Q-202]
When trying to install the checker software, alert dialog is shown and installation cannot be
executed.
[ Windows 7 ] [ Windows 10 ]

[Cause]
No access rights of software installation is available for your PC user account.
[Countermeasure]
Ask your IT administrator for software installation permission or login with administrator level password to
your PC if you have administrator right but not logged in with administrator account.

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[Q-203]
About frequently asked error message and possible actions (communication between PC and checker)

[Error: 5-3]

Message Port could not be opened.

1 Selected COM port number does not match with actual COM port which is
Probable connected to the checker. Default setting of COM port number is “COM1”.
causes If the checker is connected to the other port number, your PC cannot
communicate with the checker.

Measures Please change COM port number which matches with your PC COM port.

Probable PC COM port is already used by the other software or occupied by the other
causes software which did not correctly quit.
2
Quit the software which is using COM port. If COM port will be still
Measures
occupied, please restart Windows.

[Error: 6-1]

Message Failed to start. Check connection.

Probable
Selected incorrect COM port number.
causes
1
Check the COM port which is connected to checker cable and change to
Measures
valid COM port number from option menu of checker software.
Faulty connection between PC and checker.
Probable a. Connected to incorrect port (connector)?
causes b. Invalid cable is used?
2
c. Faulty cable (poor contact, disconnection ,etc.)
Check connection status of PC communication port, connection cable
Measures
condition or try another connection cable.

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 Unit related topic

[Q-301]
All parameters persist on same value (do not change at all)
[Cause]
Checker records operation data received from VRV units, but if no communication data comes, the last
parameters which was correctly received are recorded instead of blank, - - , or 00. Thus if there is no data is
available due to disconnected wiring or electric interference, same value (last correctly received data) is
recorded after this point.
[Countermeasure]
Check and correct D3-NET wiring.

[Q-302]
Even if an error code is indicated on the remote controller such as L5 (inverter overcurrent), checker does not
show the corresponding error code. There are no inverter retry (stand-by).
[Cause]
Normally L5 (inverter overcurrent) error immediately stops compressor, then the direct cause of L5 error
disappear and error status will be automatically reset. Like this kind of instantaneous state error codes,
remote controller retains the error code even the error status itself will be removed. But checker dose not
have such a function (retaining instantaneous error code until user reset operation), so these error codes
cannot be captured.
[Countermeasure]
It is not possible to make checker to do same behavior as remote controller does due to technical difficulties
(timing of cancellation of error status differs from model/series). Please check them by the other parameters
such as inverter current value or others.

 VRV model compatibility topic

[Q-402]
In map mode screen, outdoor unit icon is displayed but no operations data is shown. Besides outdoor unit
icon remains white and would not change to the other colors.
[Cause]
Operation data cannot be displayed because the software cannot recognize the outdoor unit. Outdoor unit
data format differs from model/series which requires update of checker software to collect operation data.
Therefore if connected outdoor unit is not supported yet, checker software can recognize it as an outdoor
unit but it cannot recognize model information and collect operation data.
[Countermeasure]
Software update to the version which supports connected model or later. Please refer to the supported
model list.

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Specification
 Specification list of TYPE4 Checker
Item Spec
Dimension 125(W) x 85(D) x 40(H) mm
Weight 200g (approximately)
Power supply 5V DC 200mA

Power input 1W (approximately)

Operating temp/RH -10~55 deg, 95%RH or below (only except for condensation status)

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