mundoclima CL23362 Operating instructions

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future reference.
CL23362_CL23369
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BLUETOOTH MODULE
Installation & owner's manual

This manual gives detailed description of the precautions
that should be brought to your attention during operation.
In order to ensure correct service of the bluetooth module
please read this manual carefully before using the unit.
For convenience of future reference, keep this manual after
reading it.

CONTENTS
OPERATING INSTRUCTIONS
1
3
4
5
7
8
6
2
PRODUCT FEATURES .......................................... 01
PACKAGE CONTENTS .......................................... 01
SPECIFICATIONS ................................................... 02
PRODUCT STRUCTURE ........................................ 02
DESCRIPTION OF LED INDICATORS ................. 04
CONNECTION OF BLUETOOTH MODULE ........ 09
EXPORT OF FAULT RECORD AND TEST RUN
REPORT ......................................................................10
UPGRADING THROUGH USB FLASH
DRIVE ...........................................................................12

INSTALLATION INSTRUCTIONS
1
3
4
5
6
2
PRECAUTIONS ........................................................ 14
DANGER WARNING ............................................... 16
TOP AIR OUTLET INSTALLATION GUIDE ......... 18
DECLARATION ........................................................ 37
7BLUETOOTH INFORMATION ............................... 37
8PRODUCT PARAMETER .................................. 38
SIDE AIR OUTLET INSTALLATION GUIDE ........ 25
MINI SIDE AIR OUTLET INSTALLATION GUIDE
.....................................................................31

OPERATING INSTRUCTIONS
1 PRODUCT FEATURES
2 PACKAGE CONTENTS
Name OutlineQty.
01
Data
Collection
Program
Upgrading
Fault
Record Saving
Engineering
Parameter
Backup
Bluetooth Module 1
1Manual
1
ST3.9×14 Screw

02
3 SPECIFICATIONS
Name Model Transmission
Mode Dimensions
Bluetooth
Module MA3-BK Bluetooth (237x86x35)mm
4 PRODUCT STRUCTURE
LED indicator
Fig.1

03
LED1~LED6
Debug port
SW1
SW2
Communication port
USB flash drive port
Fig.2

04
LED1 LED2 LED3 LED4 LED5 LED6
Bluetooth
communi
cation
Device
commun
ication
Data
sending
Data
export
Reserved USB flash
drive
connection
Blue Green Red Red Red Red
5 DESCRIPTION OF LED INDICATORS
1) Functions of LED indicators
Bluetooth communication LED indicator: LED1 (blue)
This indicates a connection between the Bluetooth module
and the mobile phone.
Description State of LED Indicator
To be connected. Slow blinking at 0.5Hz (once
every second)
The Bluetooth module is
connected to the mobile phone. Remains on
Not powered on. Off

05
Description State of LED Indicator
● Device communication LED indicator: LED2 (green)
It indicates the communication between the Bluetooth module and
the IDU/ODU.
Failure to communicate with the
connected device (IDU or ODU)
within 60s.
Slow blinking at 0.5Hz (once
every second)
The communication with the
device is normal (but the model
is not identified).
Fast blinking at 2.5Hz
(once every 0.2s)
The communication with the
ODU is normal. Remains on
Not powered on. Off

05
Off
Description State of LED Indicator
The Bluetooth module is
receiving firmware from a USB
flash drive or an app.
Slow blinking at 0.5Hz
(once every second)
● Data sending LED indicator: LED3 (red)
It indicates that the Bluetooth module is in the command & data
sending state.
● The process of sending
firmware to the device.
● The process of rewriting the SN
to the device.
● Press and hold SW1 for 15s.
Fast blinking at 2.5Hz
(once every 0.2s)
Press and hold SW1 for 5s
(within 15s). Remains on
Not powered on and not sending
data.
● Data export LED indicator: LED4 (red)
It indicates that the Bluetooth module is in the data export state.

07
Description State of LED Indicator
A USB flash drive is connected
normally.
After USB flash drive connection:
Slow blinking at 0.5Hz
(once every second)
Not powered on, without USB
flash drive. Off
Description State of LED Indicator
● Export fault record.
● Export test run data.
Fast blinking at 2.5Hz
(once every 0.2s)
Not powered on and not
exporting data Off
● Reserve: LED5 (red)
● USB flash drive connection LED indicator: LED6 (red)
Remains on
● Failure to export fault record
● Failure to export test run data
● Failure to receive app. from the
USB flash drive

08
SW1 State Function
Press the button twice in
succession 5s after the module
is powered on.
Upgrade the USB flash
drive (if connected).
Press and hold the button for 5s. Press and hold the button for 5s.
2) SW functions
● Function summary of the SW1 button
Press and hold the button for 15s.
Restore factory settings (clears
the Bluetooth connection
information).
SW2 State Function
Press the button twice in
succession.
Export the fault record and test
run data to the USB flash drive.
Press and hold the button for 5s. Stop upgrading.
● Function summary of the SW2 button

09
“In succession” means that the time span between the presses is
100ms to 750ms. If the button is not pressed again within 750ms, the
command will not succeed.
After the installation of this product, the electric control
box cover and the sealing plate of the unit must be
mounted in place to prevent electrical failure and damage
to the unit.
WARNING
6 CONNECTION OF BLUETOOTH MODULE
1. Make sure that the main board is on. The green LED2
remains illuminated, indicating that the communication
between the Bluetooth module and the device is normal.
2. Open LetsLink App and select HVAC Assistant > Smart
Tools > Connect Bluetooth.
3. Select the corresponding Bluetooth module and click the
blue Connect button. If the corresponding Bluetooth
module cannot be found in the app, scan the QR code on
the side of the Bluetooth module for connection.Bluetooth
module is connected to the APP.

10
4. When the pop-up window of the AP Connection Mode
appears, open the cap of the Bluetooth module, press and
hold SW1 for more than 5s, and select Completed and
Confirm.
5. When the blue LED1 of the Bluetooth module remains on
and the app shows that the connection is successful, the
Bluetooth module is connected to the APP.
7 Export of fault record and test run report
1. Function description
● Fault record:
The Bluetooth module can save the information and waveform data of
the last 10 faults, as well as the IDU and ODU operating data before
these faults (32 sets of operating data, including the data at the time
of the fault, 30s before the fault, 1min before the fault, and 2min to
30min before the fault).
● Test run report:
During the test run of the system, the Bluetooth module checks the
operating state of the connected device and records the results and
data of the latest test run.

11
2. USB flash drive export procedure
● Open the cap of the Bluetooth module and insert the
USB flash drive into the USB port. LED6 turns on when
the USB flash drive is connected to the module.
● Press SW2 twice in succession to export the fault data
and test run report to the USB flash drive. In this
process, LED4 blinks fast at 2.5Hz. If the export fails,
LED6 blinks slowly at 0.5Hz and you can try again by
pressing the button.
● The export ends when LED4 turns off. Unplug the USB
flash drive, and LED6 turns off.
3. Notes
● The module also supports the export of data to LetsLink.
● Analyze the fault record through diagnosis software
before reference.

12
8 UPGRADING THROUGH USB FLASH DRIVE
1. Function description
● The Bluetooth module is capable of upgrading its own
software or the connected ODU software through the use
of a FAT32 USB flash drive.
● Make sure that there is only one BIN file in the USB flash
drive before beginning the upgrading.
● The Bluetooth module will automatically identify the type
of the BIN file and upgrade the corresponding device. (If
the firmware of the ODU connected with the USB flash
drive is upgraded, the connected ODU programs upgrade
automatically.)
2. Upgrading procedure
● Open the cap of the Bluetooth module and insert the USB
flash drive into the USB port. LED6 turns on when the
USB flash drive is connected to the module.

13
● Press SW1 twice in succession to receive program from the
USB flash drive. If LED6 blinks slowly at 0.5Hz, there is no
corresponding BIN file in the root directory of the USB flash
drive or the BIN file did not pass the integrity verification,
and the program reception failed.
● The Bluetooth module identifies the type of the BIN file.
When upgrading its own file, the Bluetooth module copies
the BIN file to upgrade. During this process, LED3 blinks
slowly at 0.5Hz. When upgrading the ODU file, the
Bluetooth module copies the BIN file, during which LED3
blinks slowly at 0.5Hz, and then sends it to the
corresponding ODU, during which LED3 blinks fast at
2.5Hz. After the BIN file is sent to the ODU, LED3 turns off.
3. Notes
● During the upgrading, the Bluetooth module does not
report operating information and does not execute control
commands
● The current software of outdoor or indoor unit won't be
refreshed if the upgrading fails.

1 PRECAUTIONS
14
INSTALLATION INSTRUCTIONS
● Read this section of the manual to ensure correct
installation.
● The content provided here covers warnings, which contain
important information about safety that must be followed.
● The module must be installed by qualified technicians
designated by the local dealer or service agent. Do
not install it by yourself.
● Do not knock, throw, or disassemble the Bluetooth
module.
● The Bluetooth module is equipped with a low-voltage
circuit. The wires of the module shall be connected
according to the wiring guide and protected from
direct exposure to high-voltage wires. Do not lay the
low-voltage wires in the same tube together with
high-voltage wires.
WARNING

15
● Do not install the Bluetooth module in corrosive,
flammable, or explosive environments or places with
oil mist (such as a kitchen).
● Do not install the Bluetooth module when the unit is
working or turned on.
WARNING

16
2 DANGER WARNING
● While installing and opening the Bluetooth module,
install the silicon seal back in place if it comes out, to
avoid water from entering the module.
Reinstall the
seal back in
place if it
comes out
Fig.2.1