Compatible with Domestic line models
USER MANUAL
Issue date: 12/2017 r2.3 ENGLISH
Intesis
TM
INMBSDAI001I000
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Important User Information
Disclaimer
The information in this document is for informational purposes only. Please inform HMS Industrial
Networks of any inaccuracies or omissions found in this document. HMS Industrial Networks disclaims
any responsibility or liability for any errors that may appear in this document.
HMS Industrial Networks reserves the right to modify its products in line with its policy of continuous
product development. The information in this document shall therefore not be construed as a
commitment on the part of HMS Industrial Networks and is subject to change without notice. HMS
Industrial Networks makes no commitment to update or keep current the information in this document.
The data, examples and illustrations found in this document are included for illustrative purposes and are
only intended to help improve understanding of the functionality and handling of the product. In view of
the wide range of possible applications of the product, and because of the many variables and
requirements associated with any particular implementation, HMS Industrial Networks cannot assume
responsibility or liability for actual use based on the data, examples or illustrations included in this
document nor for any damages incurred during installation of the product. Those responsible for the use
of the product must acquire sufficient knowledge in order to ensure that the product is used correctly in
their specific application and that the application meets all performance and safety requirements
including any applicable laws, regulations, codes and standards. Further, HMS Industrial Networks will
under no circumstances assume liability or responsibility for any problems that may arise as a result from
the use of undocumented features or functional side effects found outside the documented scope of the
product. The effects caused by any direct or indirect use of such aspects of the product are undefined and
may include e.g. compatibility issues and stability issues.
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TM
INMBSDAI001I000
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Modbus RTU (EIA-485) Interface for Daikin air conditioners.
Compatible with Domestic line models.
ORDER CODE
LEGACY ORDER CODE
INMBSDAI001I000
DK-AC-MBS-1
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TM
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INDEX
1. Presentation ........................................................................................................ 5
2. Connection .......................................................................................................... 6
2.1 Connect to the AC indoor unit ........................................................................... 6
2.2 Connection to the EIA-485 bus .......................................................................... 6
3. Quick Start Guide ................................................................................................. 7
4. Modbus Interface Specification ............................................................................... 8
4.1 Modbus physical layer ...................................................................................... 8
4.2 Modbus Registers ............................................................................................ 8
4.2.1 Control and status registers .......................................................................... 8
4.2.2 Configuration Registers .............................................................................. 10
4.2.3 Considerations on Temperature Registers ..................................................... 10
4.3 DIP-switch Configuration Interface .................................................................. 13
4.4 Implemented Functions .................................................................................. 16
4.5 Device LED indicator ...................................................................................... 16
4.6 EIA-485 bus. Termination resistors and Fail-Safe Biasing mechanism ................... 16
5. Mechanical and electrical features .......................................................................... 17
6. List of supported AC Unit Types ............................................................................. 18
7. Error Codes ........................................................................................................ 19
Intesis
TM
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1. Presentation
The INMBSDAI001I000 interface allows a complete and natural integration of
Daikin air conditioners into Modbus RTU (EIA-485) networks.
Compatible with Domestic line models.
Reduced dimensions. 93 x 53 x 58 mm
3.7” x 2.1” x 2.3”
• Quick and easy installation.
Mountable on DIN rail, wall, or even inside the indoor unit on some models of AC.
• External power not required.
• Direct connection to Modbus RTU (EIA-485) networks. Up to 63 INMBSDAI001I000
devices can be connected on the same network.
INMBSDAI001I000 is a Modbus slave device.
• Direct connection to the AC indoor unit. Up to 1 AC indoor units can be connected to
INMBSDAI001I000. The cable for this connection is also supplied.
• Configuration from both on-board DIP-switches and Modbus RTU.
• Total Control and Supervision.
• Real states of the AC unit's internal variables.
• Allows simultaneous use of the AC’s remote controls and Modbus RTU.
* Up to 63 Intesis devices can be installed in the same Modbus RTU bus. However, depending on the configured speed, the
installation of Modbus Repeaters may be required
• SCADA
• PLC
• DDC
• BMS
• HMI
• Controller
• etc
Up to 63
AC indoor
units*
Modbus RTU
EIA-485 network
Modbus RTU
Master
device
INMBSDAI001I000
INMBSDAI001I000
INMBSDAI001I000
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2. Connection
The interface comes with a specific cable and connectors to establish direct connection to the
AC indoor unit. It comes as well with a plug-in terminal block of 2 poles to establish direct
connection with the Modbus RTU EIA-485 network.
2.1 Connect to the AC indoor unit
To connect the INMBSDAI001I000 interface with the AC indoor unit you must follow these
steps:
Disconnect Mains Power from the AC unit. Open the front cover of the indoor unit to have
access to the electronic circuit. Once you arrive at the electronic circuit, locate the socket
connector marked as S21.
Take the cable that comes with the interface, insert one of its connectors (the one installed in
the shortest uncovered part) into the socket of the INMBSDAI001I000, and the other
connector (the one installed in the largest uncovered part) to the socket S21 of the AC unit's
electronic circuit. Remember that the INMBSDAI001I000 must also be connected to the
Modbus RTU EIA-485 network. Close the AC indoor unit's front cover again to finish the
connection.
Do not modify the length of the cable supplied with the interface, it may affect the correct
interface´s operation.
2.2 Connection to the EIA-485 bus
Connect the EIA-485 bus wires to the plug-in terminal block (the one of two poles) of
INMBSDAI001I000 and keep the polarity on this connection (A+ and B-). Make sure that the
maximum distance to the bus is 1,200 meters (3,937 ft). The loop or star typologies are not
allowed in the case of the EIA-485. A terminator resistor of 120Ω must be present at each
end of the bus to avoid signal reflections. The bus needs a fail-safe biasing mechanism (see
section 4.6 for more details).
S21
AC indoor unit
Electronic circuit board
200 mm / 7.9”
40 mm / 1.6”
Connection cable
supplied within the
interface.
90 mm / 3.5”
Modbus RTU
EIA-485
Bus
EIA485
A B
AC Unit
53 mm / 2.1”
Use these holes to
attach the cable
using the staple and
screw provided with
the interface.
For wall mounting,
extract the upper and
lower staples until
you listen the "click".
Fixing screw
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3. Quick Start Guide
1. Disconnect the air conditioning from the Mains Power.
2. Attach the interface next to the AC indoor unit (wall mounting) following the
instructions of the diagram below or install it inside the AC indoor unit (respect the
safety instructions given above).
3. Connect the connection cable included with the interface between the interface and
the AC indoor unit following the instructions of the diagram.
4. Connect the EIA-485 bus to the connector EIA485 of the interface.
5. Close the AC indoor unit.
6. Check the DIP-Switch configuration of the Intesis interface and make sure it matches
the current installation’s parameters (see section 4.3).
By default, the interface is set to:
▪ Modbus Slave Address ➔ 1
▪ Modbus baud rate ➔ 9600 bps
These parameters can be modified from SW4 and SW3 DIP-Switches.
All other switch positions are set at low level (Off position ) by default.
NOTE: All changes on the DIP-Switch configuration require a system power cycle to
be applied.
7. Connect the AC system to Mains Power.
IMPORTANT: The Intesis interface requires to be connected to the AC unit
(powered) to start communicating.
ON
ON
SW3
SW4
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4. Modbus Interface Specification
4.1 Modbus physical layer
INMBSDAI001I000 implements a Modbus RTU (Slave) interface, to be connected to an EIA485 line. It performs an 8N2 communication (8 data bits, no parity and 2 stop bit) with
several available baud rates (2400 bps, 4800 bps, 9600 bps -default-, 19200 bps, 38400
bps, 57600 bps, 76800 bps and 115200 bps). It also supports 8N1 communication (8 data
bits, no parity and 1 stop bit).
4.2 Modbus Registers
All registers are type “16-bit unsigned Holding Register” and they use the standard ModBus
big endian notation.
4.2.1 Control and status registers
Register Address
(protocol address)
Register Address
(PLC address)
R/W
Description
0
1
R/W
AC unit On/Off
▪ 0: Off
▪ 1: On
1
2
R/W
AC unit Mode 1
▪ 0: Auto
▪ 1: Heat
▪ 2: Dry
▪ 3: Fan
▪ 4: Cool
2
3
R/W
AC unit Fan Speed 1
▪ 0: Auto
▪ 1: Low
▪ 2: Mid-1
▪ 3: Mid-2
▪ 4: Mid-3
▪ 5: High
3
4
R/W
AC unit Up/Down Vane Position 1
▪ 0: Off (Default)
▪ 10: Swing
4
5
R/W
AC unit Temperature setpoint
1,2,3
▪ -32678 (Initialization value)
COOL
▪ 18..32 ºC (ºC/x10ºC)
▪ 64..92 ºF
HEAT
▪ 16..30 ºC (ºC/x10ºC)
▪ 61..88 ºF
AUTO
▪ 18..30 ºC (ºC/x10ºC)
▪ 64..88 ºF
1
Available values will depend on the AC unit mode. Check the AC unit model functions in its user manual to know the possible
values for this register.
2
Magnitude for this register can be adjusted to Celsius x 1ºC, Celsius x 10ºC (default) or Fahrenheit. See section 4.2.3 for more
information
3
It is not possible turn to x10 the value shown in Fahrenheit.
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Register Address
(protocol address)
Register Address
(PLC address)
R/W
Description
5
6
R
AC unit Temperature reference
1,2,3
▪ -32678 (Initialization value)
▪ 10..38 ºC (ºC/x10ºC)
▪ 50..100 ºF
6
7
R/W
Window Contact
▪ 0: Closed (Default Value)
▪ 1: Open
7
8
R/W
INMBSDAI001I000 Disablement 4
▪ 0: INMBSDAI001I000 enabled (Default
Value)
▪ 1: INMBSDAI001I000 disabled
8
9
R/W
AC Remote Control Disablement 4
▪ 0: Remote Control enabled (Default)
▪ 1: Remote Control disabled
9
10
R/W
AC unit Operation Time 4
▪ 0..65535 (hours). Counts the time the
AC unit is in “On” state.
10
11
R
AC unit Alarm Status
▪ 0: No alarm condition
▪ 1: Alarm condition
11
12
R
Error Code 5
▪ 0: No error present
▪ 65535 (-1 if it is read as signed value):
Error in the communication of
INMBSDAI001I000 with the AC unit
▪ Any other error present, see the table at
the end of this document.
22
23
R/W
Indoor unit ambient temperature from
external sensor (at Modbus side)
1,2,3,6
▪ -32768: (Initialization value). No
temperature is being provided from an
external sensor.
▪ Any other: (ºC/x10ºC/ºF)
23
24
R
AC Real temperature setpoint
1,2,3,6
▪ -32678 (Initialization value)
COOL
▪ 18..32 ºC (ºC/x10ºC)
▪ 64..92 ºF
HEAT
▪ 16..30 ºC (ºC/x10ºC)
▪ 61..88 ºF
AUTO
▪ 18..30 ºC (ºC/x10ºC)
▪ 64..88 ºF
26
27
R/W
AC unit Left/Right Vane Position 1
▪ 0: Auto (Default Value)
▪ 10: Swing
28 29
R/W
AC Humidification Value 1
▪ 0: Off
▪ 1: Low Humidification
▪ 2: Medium Humidification
▪ 3: High Humidification
4
This value is stored in non-volatile memory
5
See section 7 for possible error codes and their explanation
6
See section 4.2.3 for more information
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▪ 4: Continuous
97
98
R/W
Block Periodic Sendings
4,7,8
▪ 0: Non-blocked (Default value)
▪ 1: Blocked
4.2.2 Configuration Registers
Register Address
(protocol address)
Register Address
(PLC address)
R/W
Description
13
14
R/W
“Open Window” switch-off timeout 9
▪ 0..30 (minutes)
▪ Factory setting: 30 (minutes)
14
15
R
Modbus RTU Baud rate
▪ 2400bps
▪ 4800bps
▪ 9600bps (Default)
▪ 19200bps
▪ 38400bps
▪ 57600bps
▪ 76800bps
▪ 115200bps
15
16
R
Device's Modbus Slave address
▪ 1..63
21
22
R
Max number of fan speeds
▪ Value is always 5
49
50
R
Device ID: 0x0701
50
51
R
Software version
4.2.3 Considerations on Temperature Registers
• AC unit temperature setpoint (R/W)
(register 4 – in Protocol address / register 5 – in PLC address):
This is the adjustable temperature setpoint value that must be required by the User.
This register can be read (Modbus function 3 or 4) or written (Modbus functions 6 or
16). A Remote Controller connected to the Daikin indoor unit will report the same
temperature setpoint value as this register. This will apply when no AC unit’s
external reference temperature is provided from INMBSDAI001I000 (see details for
register 22/23 below).
• AC unit temperature reference (R)
(register 5 – in Protocol address / register 6 – in PLC address):
7
If the register is configured as “0:Non-blocked”, all commands received from Modbus will be sent to the AC system. If “1:
Blocked”, commands from Modbus will only be sent to the AC system if they differ from the previous value (values sent on chan ge).
8
The register applies to firmware version 1.5 onwards
9
Once window contact is open, a count-down to switch off the AC Unit will start from this configured value.
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This register reports the temperature that is currently used by the Daikin indoor unit
as the reference of its own control loop. Depending on the configuration of the indoor
unit, this value can be the temperature reported by the sensor on the return path of
the Daikin indoor unit or the sensor of its Remote Controller. It is a read-only
register (Modbus functions 3 or 4).
• AC unit external temperature reference (Modbus) (R/W)
(register 22 – in Protocol address / register 23 – in PLC address):
This register allows us to provide an external temperature’s sensor from the Modbus
side. Daikin indoor unit does not allow, on devices like INMBSDAI001I000, to provide
directly a temperature to be used as a reference of the control loop of the AC indoor
unit. In order to overcome this limitation and enable the usage of an external
temperature sensor (e.g. from Modbus side), INMBSDAI001I000 applies the
following mechanism (only if “external temperature’s reference” is being used):
o After a couple of values have been entered in the “AC unit external
temperature’s reference” (register 22/23) and the “AC unit temperature set
point” (register 4/5), INMBSDAI001I000 calculates the corresponding
temperature’s demand (e.g., if a “temperature setpoint (register 4/5)” of
22ºC, and an “external temperature reference (register 22/23)” of 20ºC are
entered, INMBSDAI001I000 will assume that the user is demanding a +2ºC
increase in temperature).
o By knowing at any time, the ambient temperature currently used by the
indoor unit to control its own operation (register 5/6), INMBSDAI001I000 can
calculate the required temperature setpoint needed to apply the
decrease/increase on the real temperature and reach the temperature chosen
by the user (following the example above, if INMBSDAI001I000 reads an
“ambient temperature” (register 5/6) of 24ºC in the indoor unit, it will apply
a final setpoint of 24ºC + 2ºC = 26ºC).
o At this moment, each time that INMBSDAI001I000 detects a change on the
ambient temperature reported by the indoor unit (register 5/6), it will also
change the required setpoint, in order to keep the temperature required by
the User at any time. If we follow the last example, when INMBSDAI001I000
receives a new temperature´s value coming from the indoor unit of 25ºC,
INMBSDAI001I000 will automatically adjust the temperature setpoint required
of the AC indoor unit to 25ºC + 2ºC = 27ºC).
o In general, INMBSDAI001I000 is constantly applying the “Virtual
Temperature” formula:
SAC = Su – ( Tu – T
AC
)
Where:
SAC - setpoint value currently applied to the indoor unit
Su - setpoint value written at Modbus side (register 4/5)
Tu - external temperature reference written at Modbus side (register 22/23)
TAC - ambient temperature that the indoor unit is using as the reference of
its own control loop (register 5/6)
When INMBSDAI001I000 detects a change in any of the values of
{ Su , Tu , TAC }, it will send the new setpoint (SAC) to the indoor unit.
o After the startup, the value for “external temperature’s reference” (register
22/23) has a value -32768 (0x8000). This value means that no external
temperature reference is being provided through INMBSDAI001I000. In this
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scenario, the setpoint value shown or written in register 4/5 will always be
the same as the current setpoint value of the indoor unit.
o Notice that, the use of the “external temperature reference” (register 22/23)
(e.g., writing a value different from -32768 / 0x8000 in it) has the following
relevant consequences:
▪ The mechanism of “Virtual Temperature” is applied. The temperature
setpoint’s value shown by the Remote Controller or other Control
System from Daikin connected to the indoor unit may show a different
value from the value shown in register 4/5.
▪ The User is not be able to change the setpoint using any Remote
Controller from Daikin, as setpoint of the indoor unit becomes
exclusively controlled by the “Virtual Temperature” mechanism.
• AC Real temperature setpoint (R)
(register 23 – In Protocol address / register 24 – in PLC address):
As it has been detailed on the previous point, the real temperature setpoint in the
indoor unit and the temperature setpoint requested from INMBSDAI001I000 might
differ (when a value in register 22/23 – “external temperature reference” is
entered). This register always informs about the current temperature setpoint which
is being used by the indoor unit – it is also includes the temperature setpoint that
will be shown by an additional remote controller from Daikin connected to the indoor
unit, if it is present on the system.
Moreover, notice that temperature’s values of all these three registers are expressed
according to the temperature’s format configured through its onboard DIP-Switches
(See 4.3). The following formats are possible:
• Celsius value: Value in Modbus register is the temperature value in Celsius (i.e.
a value “22” in the Modbus register must be interpreted as 22ºC).
• Decicelsius value: Value in Modbus register is the temperature value in
decicelsius (i.e. a value “220” in the Modbus register must be interpreted as
22.0ºC).
• Fahrenheit value: Value in Modbus register is the temperature value in
Fahrenheit (i.e. a value “72” in the Modbus register must be interpreted as 72ºF
(~22ºC).
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4.3 DIP-switch Configuration Interface
All the configuration values on INMBSDAI001I000 can be written and read from Modbus
interface. Otherwise, some of them can also be setup from its on-board DIP-switch interface.
The device has DIP-switches SW1*, SW3 and SW4 on the following locations:
The following tables apply to the interface’s configuration through DIP-switches:
SW4 –Degrees/Decidegrees (x10), temperature magnitude (ºC/ºF) and EIA-485 termination
resistor.
Table 4.1 SW4: Temperature and termination resistor configuration
SW4-P1..2-4
Description
Temperature values in Modbus register are represented in degrees (x1) (Default value)
Temperature values in Modbus register are represented in decidegrees (x10)
Temperature values in Modbus register are represented in Celsius degrees (Default value)
Temperature values in Modbus register are represented in Fahrenheit degrees
EIA-485 bus without termination resistor (Default value)
Internal termination resistor of 120Ω connected to EIA-485 bus
SW3
SW4
* DIP-Switch SW1 is
not used by the
current version of
DK-AC-MBS-1
SW3 SW4
K1
FIXING
CABLE
EIA485
A B
AC Unit
SW1*
ON
1 2 3 4
SW1*
ON
ON
1 2 3 4
1 2 3 4 5 6 7 8
SW3
SW4
ON
ON
ON
ON
ON
ON
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SW3/SW4 – Baud rate configuration
SW3-P7..8
SW4-P3
Description
2400bps
4800bps
9600bps (Default value)
19200bps
38400bps
57600bps
76800bps
115200bps
Table 4.2 SW3-SW4: Modbus baud rate
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
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SW3 – Modbus Slave address
Table 4.3 SW3: Modbus Slave address
Add SW3-P1..6
Add SW3-P1..6
Add
SW3-P1..6
Add
SW3-P1..6
Add
SW3-P1..6
0
13
26
39
52
1
14
27
40
53
2
15
28
41
54
3
16
29
42
55
4
17
30
43
56
5
18
31
44
57
6
19
32
45
58
7
20
33
46
59
8
21
34
47
60
9
22
35
48
61
10
23
36
49
62
11 24 37 50 63
12 25 38 51
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
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4.4 Implemented Functions
INMBSDAI001I000 implements the following standard Modbus functions:
▪ 3: Read Holding Registers
▪ 4: Read Input Registers
▪ 6: Write Single Register
▪ 16: Write Multiple Registers (Despite this function is allowed, the interface does not
allow to write operations on more than 1 register with the same request, this means
that length field should always be 1 when this function is being used in case of
writing)
4.5 Device LED indicator
The device includes a LED indicator to show all the possible operational states. In the
following table there are written the indicators which can be performed and its meaning.
Device status
LED indication
ON / OFF Period
Description
On power-up
LED pulse
ON for 5 seconds / OFF after
Device reset / power-up
During normal
operation
LED flashing
200ms ON / 2s OFF
Device correctly
configured and working
During normal
operation
LED OFF
OFF continuously
No Modbus Slave address
configured
During normal
operation
LED blinking
200ms ON / 200ms OFF
Communication Error with
the AC unit
4.6 EIA-485 bus. Termination resistors and Fail-Safe Biasing
mechanism
EIA-485 bus requires a 120Ω terminator resistor at each end of the bus to avoid signal
reflections.
In order to prevent fail status detections by the receivers, which are "listening" the bus, when
all the transmitters’ outputs are in three-state (high impedance), it is also required a fail-safe
biasing mechanism. This mechanism provides a safe status (a correct voltage level) in the
bus when all the transmitters’ outputs are in three-state.
The INMBSDAI001I000 device includes an on-board terminator resistor of 120Ω that can be
connected to the EIA-485 bus by using DIP-switch SW4.
Some Modbus RTU EIA-485 Master devices can provide also internal 120Ω terminator resistor
and/or fail-safe biasing. Check the technical documentation of the Master device connected to
the EIA-485 network in each case.
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5. Mechanical and electrical features
Enclosure
Plastic, type PC (UL 94 V-0)
Net dimensions (dxwxh):
93 x 53 x 58 mm / 3.7” x 2.1” x 2.3”
Color: Light Grey. RAL 7035
Operation
Temperature
0ºC to +60ºC
Weight
85 g.
Stock
Temperature
-20ºC to +85ºC
Mounting
Wall
DIN rail EN60715 TH35.
Operational
Humidity
<95% RH, non-condensing
Terminal Wiring
(for lowvoltage signals)
For terminal: solid wires or stranded wires
(twisted or with ferrule)
1 core: 0.5mm2… 2.5mm2
2 cores: 0.5mm2… 1.5mm2
3 cores: not permitted
Stock Humidity
<95% RH, non-condensing
Modbus RTU
port
1 x Serial EIA485 Plug-in screw terminal block
(2 poles)
A, B
Compatible with Modbus RTU EIA-485 networks
Isolation
voltage
1500 VDC
AC unit port
1 x Specific connector
Specific cable included
Isolation
resistance
1000 MΩ
Switch 1
(SW1)
1 x DIP-Switch
Protection
IP20 (IEC60529)
Switch 3
(SW3)
1 x DIP-Switch for Modbus RTU settings
LED indicators
1 x Onboard LED - Operational
status
Switch 4
(SW4)
1 x DIP-Switch for extra functions
EIA-485
Port
DIP
Switch SW1
DIP Switch
SW3
LED
indicator
DIP Switch
SW4
AC Unit
connector
Intesis
TM
INMBSDAI001I000
User’s Manual r2.3 EN
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6. List of supported AC Unit Types
A list of Daikin indoor unit model´s references compatible with INMBSDAI001I000 and its
available features can be found in:
https://www.intesis.com/docs/compatibilities/inxxxdai001xx00_compatibility
Intesis
TM
INMBSDAI001I000
User’s Manual r2.3 EN
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This information is subject to change without notice
URL https://www.intesis.com
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7. Error Codes
Error
Code
Error in
Remote
Controller
Error category
Error Description
0
N/A
INMBSDAI001I000
No active error
17
A0
Indoor Unit
External protection devices activated
18
A1
Indoor unit PCB assembly failure
19
A2
Interlock error for fan
20
A3
Drain level system error
21
A4
Temperature of heat exchanger (1) error
22
A5
Temperature of heat exchanger (2) error
23
A6
Fan motor locked, overload, over current
24
A7
Swing flap motor error
25
A8
Overcurrent of AC input
26
A9
Electronic expansion valve drive error
27
AA
Heater overheat
28
AH
Dust collector error / No-maintenance filter error
30
AJ
Capacity setting error (indoor)
31
AE
Shortage of water supply
32
AF
Malfunctions of a humidifier system (water leaking)
33
C0
Malfunctions in a sensor system
36
C3
Sensor system of drain water error
37
C4
Heat exchanger (1) (Liquid pipe) thermistor system error
38
C5
Heat exchanger (1) (Gas pipe) thermistor system error
39
C6
Sensor system error of fan motor locked, overload
40
C7
Sensor system of swing flag motor error
41
C8
Sensor system of over-current of AC input
42
C9
Suction air thermistor error
43
CA
Discharge air thermistor system error
44
CH
Contamination sensor error
45
CC
Humidity sensor error
46
CJ
Remote control thermistor error
47
CE
Radiation sensor error
48
CF
High pressure switch sensor
49
E0
Outdoor Unit
Protection devices activated
50
E1
Outdoor uni9t PCB assembly failure
52
E3
High pressure switch (HPS) activated
53
E4
Low pressure switch (LPS) activated
54
E5
Overload of inverter compressor motor
55
E6
Over current of STD compressor motor
56
E7
Overload of fan motor / Over current of fan motor
57
E8
Over current of AC input
58
E9
Electronic expansion valve drive error
59
EA
Four-way valve error
60
EH
Pump motor over current
61
EC
Water temperature abnormal
62
EJ
(Site installed) Protection device activated
63
EE
Malfunctions in a drain water
64
EF
Ice thermal storage unit error
65
H0
Malfunctions in a sensor system
66
H1
Air temperature thermistor error
67
H2
Sensor system of power supply error
68
H3
High Pressure switch is faulty
69
H4
Low pressure switch is faulty
70
H5
Compressor motor overload sensor is abnormal
71
H6
Compressor motor over current sensor is abnormal
72
H7
Overload or over current sensor of fan motor is abnormal
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INMBSDAI001I000
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73
H8
Sensor system of over-current of AC input
74
H9
Outdoor air thermistor system error
75
HA
Discharge air thermistor system error
76
HH
Pump motor sensor system of over current is abnormal
77
HC
Water temperature sensor system error
79
HE
Sensor system of drain water is abnormal
80
HF
Ice thermal storage unit error (alarm)
81
F0
No.1 and No.2 common protection device operates.
82
F1
No.1 protection device operates.
83
F2
No.2 protection device operates
84
F3
Discharge pipe temperature is abnormal
87
F6
Temperature of heat exchanger(1) abnormal
91
FA
Discharge pressure abnormal
92
FH
Oil temperature is abnormally high
93
FC
Suction pressure abnormal
95
FE
Oil pressure abnormal
96
FF
Oil level abnormal
97
J0
Sensor system error of refrigerant temperature
98
J1
Pressure sensor error
99
J2
Current sensor error
100
J3
Discharge pipe thermistor system error
101
J4
Low pressure equivalent saturated temperature sensor
system error
102
J5
Suction pipe thermistor system error
103
J6
Heat exchanger(1) thermistor system error
104
J7
Heat exchanger(2) thermistor system error
105
J8
Oil equalizer pipe or liquid pipe thermistor system error
106
J9
Double tube heat exchanger outlet or gas pipe thermistor
system error
107
JA
Discharge pipe pressure sensor error
108
JH
Oil temperature sensor error
109
JC
Suction pipe pressure sensor error
111
JE
Oil pressure sensor error
112
JF
Oil level sensor error
113
L0
Inverter system error
116
L3
Temperature rise in a switch box
117
L4
Radiation fin (power transistor) temperature is too high
118
L5
Compressor motor grounded or short circuit, inverter PCB
fault
119
L6
Compressor motor grounded or short circuit, inverter PCB
fault
120
L7
Over current of all inputs
121
L8
Compressor over current, compressor motor wire cut
122
L9
Stall prevention error (start-up error) Compressor locked,
etc.
123
LA
Power transistor error
125
LC
Communication error between inverter and outdoor control
unit
129
P0
Shortage of refrigerant (thermal storage unit)
130
P1
Power voltage imbalance, open phase
132
P3
Sensor error of temperature rise in a switch box
133
P4
Radiation fin temperature sensor error
134
SW4
DC current sensor system error
135
SW1
AC or DC output current sensor system error
136
SW3
Total input current sensor error
142
PJ
Capacity setting error (outdoor)
145
U0
System
Low pressure drop due to insufficient refrigerant or electronic
Intesis
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INMBSDAI001I000
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expansion valve error, etc.
146
U1
Reverse phase, Open phase
147
U2
Power voltage failure / Instantaneous power failure
148
U3
Failure to carry out check operation, transmission error
149
U4
Communication error between indoor unit and outdoor unit,
communication error between outdoor unit and BS unit
150
U5
Communication error between remote control and indoor unit
/ Remote control board failure or setting error for remote
control
151
U6
Communication error between indoor units
152
U7
Communication error between outdoor units /
Communication error between outdoor unit and ice thermal
storage unit
153
U8
Communication error between main and sub remote
controllers (sub remote control error) / Combination error of
other indoor unit / remote control in the same system
(model)
154
U9
Communication error between other indoor unit and outdoor
unit in the same system / Communication error between
other BS unit and indoor/outdoor unit
155
UA
Combination error of indoor/BS/outdoor unit (model,
quantity, etc.), setting error of spare parts PCB when
replaced
156
UH
Improper connection of transmission wiring between outdoor
and outdoor unit outside control adaptor
157
UC
Centralized address duplicated
158
UJ
Attached equipment transmission error
159
UE
Communication error between indoor unit and centralized
control device
160
UF
Failure to carry out check operation Indoor-outdoor, outdooroutdoor communication error, etc.
209
60
Others
All system error
210
61
PC board error
211
62
Ozone density abnormal
212
63
Contamination sensor error
213
64
Indoor air thermistor system error
214
65
Outdoor air thermistor system error
217
68
HVU error (Venti-air dust-collecting unit)
219
6A
Dumper system error
220
6H
Door switch error
221
6C
Replace the humidity element
222
6J
Replace the high efficiency filter
223
6E
Replace the deodorization catalyst
224
6F
Simplified remote controller error
226
51
Fan motor of supply air over current or overload
227
52
Fan motor of return air over current / Fan motor of return air
overload
228
53
Inverter system error (supply air side)
229
54
Inverter system error (return air side)
241
40
Humidifying valve error
242
41
Chilled water valve error
243
42
Hot water valve error
244
43
Heat exchanger of chilled water error
245
44
Heat exchanger of hot water error
258
31
The humidity sensor of return air sensor
259
32
Outdoor air humidity sensor error
260
33
Supply air temperature sensor error
261
34
Return air temperature sensor error
262
35
Outdoor air temperature sensor error
Intesis
TM
INMBSDAI001I000
User’s Manual r2.3 EN
© HMS Industrial Networks S.L.U - All rights reserved
This information is subject to change without notice
URL https://www.intesis.com
22 / 22
263
36
Remote controller temperature sensor error
267
3A
Water leakage sensor 1 error
268
3H
Water leakage sensor 2 error
269
3C
Dew condensation error
339
M2
Centralized remote controller PCB error
345
M8
Communication error between centralized remote control
devices
347
MA
Centralized remote control devices inappropriate combination
349
MC
Centralized remote controller address setting error
65535
(-1)
N/A
INMBSDAI001I000
Error in the communication of INMBSDAI001I000 with the AC
unit
In case you detect an error code not listed, contact your nearest Daikin technical support
service.
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