Intesis IntesisBox FJ-AC-MBS-1 User manual

IntesisBox®
ModBus RTU
Fujitsu Air Conditioning
Compatible with Domestic and VRF line air conditioners commercialized by
Fujitsu
User Manual
03/2019
r1.0 eng

IntesisBox®ModBus RTU –Fujitsu User Manual r1.0 EN
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© Intesis Software S.L.U. 2019 All Rights Reserved.
Information in this document is subject to change without notice. The software described in this document is furnished
under a license agreement or nondisclosure agreement. The software may be used only in accordance with the terms
of those agreements. No part of this publication may be reproduced, stored in a retrieval system or transmitted in
any form or any means electronic or mechanical, including photocopying and recording for any purpose other than
the purchaser’s personal use without the written permission of Intesis Software S.L.U.
Intesis Software S.L.U.
Milà i Fontanals, 1 bis
08700 Igualada
Spain
TRADEMARKS
All trademarks and trade names used in this document are acknowledged to be the copyright of their respective
holders.

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Gateway for the integration of a Fujitsu air conditioning unit in
ModBus RTU enabled monitoring and control systems.
Compatible with Domestic and VRF line air conditioners commercialized by Fujitsu.
Order Code:
IBMBSFGL001I000

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INDEX
1Presentation..........................................................................................................................................................5
2Connection............................................................................................................................................................6
Connect to the AC indoor unit .......................................................................................................................6
Connection to the EIA-485 bus .....................................................................................................................6
3Quick Start Guide..................................................................................................................................................7
4Modbus Interface Specification.............................................................................................................................8
Modbus physical layer...................................................................................................................................8
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
DIP-switch Configuration Interface..............................................................................................................12
Implemented Functions...............................................................................................................................14
Device LED indicator...................................................................................................................................14
EIA-485 bus. Termination resistors and Fail-Safe Biasing mechanism......................................................15
5Mechanical & electrical characteristics...............................................................................................................16
6AC Unit Types compatibility................................................................................................................................17
7Error codes..........................................................................................................................................................18
Intesis Codes...............................................................................................................................................18
RAC and VRF J-II / V-II / VR-II series.........................................................................................................18
VRF V / S / J Series ....................................................................................................................................21

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1 Presentation
The FJ-AC-MBS-1 interfaces allow a complete and natural integration of
Fujitsu air conditioners into Modbus RTU (EIA-485) networks.
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 of AC.
•External power not required.
•Direct connection to Modbus RTU (EIA-485) networks. Up to 63 FJ-AC-MBS-1 devices can be connected in the
same network.
FJ-AC-MBS-1 is a Modbus slave device.
•Direct connection to the AC indoor unit.
•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 IntesisBox 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
FJ-AC-MBS-1
FJ-AC-MBS-1
FJ-AC-MBS-1

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2 Connection
The interface comes with cable + connectors for direct connection to the AC indoor unit, and with a plug-in terminal
block of 3 poles for connection to a Modbus RTU EIA-485 network.
Connect to the AC indoor unit
The FJ-AC-MBS-1 connects directly to the indoor unit internal control board. In the control board locate the socket
connector marked as CN65.
Figure 2.1 FJ-AC-MBS-1 connection diagram
Connection to the EIA-485 bus
Connect the EIA-485 bus wires to the plug-in terminal block of FJ-AC-MBS-1 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). Loop or star typologies are
not allowed in the case of the EIA-485 bus. A terminator resistor of 120Ωmust be present at each end of the bus to
avoid signal reflections. The bus needs a fail-safe biasing mechanism.
CN65
AC indoor unit
Electronic control board
200 mm / 7.9”
40 mm / 1.6”
Connection cable
provided with the
interface
90 mm / 3.5”
53 mm / 2.1”
Use this hole to
attach the cable
using the staple and
the screw provided
with the interface
Fixing screw
ModBus RTU
EIA-485
Bus
IntesisBox®
FJ-AC-MBS-1
AC Unit
B A SG
EIA485
For wall mounting,
extract the upper and
lower staples until you
listen the "click".
SW1
SW2
SW3

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3 Quick Start Guide
1. Disconnect the air conditioning from 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).
3. Connect to CN65 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 IntesisBox interface and make sure it matches the current
installation’s parameters:
By default, the interface is set to:
▪Modbus Slave Address ➔1
▪Modbus baud rate ➔9600 bps
These parameters can be modified from DIP-Switches (see for further information).
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 IntesisBox interface requires to be connected to the AC unit (powered) to start
communicating.

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4 Modbus Interface Specification
Modbus physical layer
FJ-AC-MBS-1 implements a Modbus RTU (Slave) interface, to be connected to an EIA-485 line. It performs 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).
Modbus Registers
All registers are type “16-bit unsigned Holding Register” and they use the 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: Quiet
▪2: Low
▪3: Med
▪4: High
3
4
R/W
AC unit Vane Position 1
▪1: Position-1 (Horizontal)
▪2: Position-2 (Horizontal)
▪3: Position-3 (Medium)
▪4: Position-4 (Vertical)
▪10: Swing
4
5
R/W
AC unit Temperature Setpoint 1,2,3,4
▪-32768 (Initialization value)
▪16..30 (ºC) (0 = undetermined)
▪61..86 (ºF) (0 = undetermined)
5
6
R
AC unit Temperature reference 1,2,3,4
▪18..30 (ºC) (0 = undetermined)
▪64,4..86 (ºF) (0 = undetermined)
▪0x8000 There is no temperature sent from the Remote
controller
6
7
R/W
Window Contact
▪0: Closed (Default)
▪1: Open
7
8
R/W
FJ-AC-MBS-1 Disablement 5
▪0: FJ-AC-MBS-1 enabled (Default value)
▪1: FJ-AC-MBS-1 disabled
8
9
R/W
AC Remote Control Disablement 5
▪0: Remote Control enabled (Default value)
▪1: Remote Control disabled
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.
3
It is not possible turn to x10 the value shown in Fahrenheit.
4
See section 4.2.3 CONSIDERATIONS ON TEMPERATURE REGISTERS for more information
5
This value is stored in non-volatile memory

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Register Address
(protocol address)
Register Address
(PLC address)
R/W
Description
9
10
R/W
AC unit Operation Time
▪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 6
▪0: No error present
▪65535(-1 if it is read as signed value): Error in the
communication of FJ-AC-MBS-1 or Remote Controller
with the AC unit.
▪Any other value, see the table at the end of this
document.
22
23
R/W
Indoor unit´s ambient temperature from external
sensor (at Modbus side) 1,2,3,4
▪-32768: (Initialization value). No temperature is being
provided from an external sensor.
▪Any other: (ºC/x10ºC/ºF)
23
24
R
AC Real temperature setpoint 1,2,3,4
▪When no external temperature is provided, this read-
only register will have the same value as register 5 (PLC
addressing). In all cases, it will show the current setpoint
in the indoor unit.
▪16..31ºC (ºC/x10ºC)
▪60..92ºF
24
25
R
Current AC max setpoint 1,2,3
▪-32768 (Initialization value)
▪Ranges are specific from Manufacturer
25
26
R
Current AC min setpoint 1,2,3
▪-32768 (Initialization value)
▪Ranges are specific from Manufacturer
26
27
R/W
AC unit Horizontal Vane Position 1
▪0: Auto (Default)
▪1: Position 1
▪…
▪5: Position 5
▪10: Swing
31
32
R
Window status (feedback)
▪0: Not active (Default value)
▪1: Active (Window is open)
36
37
R/W
External On/Off disablement:
▪0: Not active (Default value)
▪1: Active
40
41
R
Window contact ON/OFF disablement:
▪0: Window contact is disabled (not working)
▪1: Window contact is enabled (in use)
43
44
W
Filter reset:
▪1: Reset
44
45
R
Filter status
▪0: Off
▪1: Lit
56
57
R/W
Antifreeze operation
▪0: Disabled
▪1: Enabled
64
65
R/W
Economy
▪0: Disabled
▪1: Enabled
65
66
R
Input reference temperature 1,2,3
6
See section 7ERROR CODES for possible error codes and their explanation

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Register Address
(protocol address)
Register Address
(PLC address)
R/W
Description
▪0x8000: No temperature’s value is being provided from
an external sensor. No virtual temperature is being
applied.
▪Any other: (ºC/x10ºC/ºF)
66
67
R
Return path temperature 1,2,3
▪-32768 (Initialization value)
▪Ranges are specific from Manufacturer
97
98
R/W
Block Periodic Sendings 5,7
▪0: Non-blocked (Default value)
▪1: Blocked
98
99
R
Master/Slave (gateway’s role)
▪0: Slave
▪1: Master
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 8
▪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
Modbus Slave Address
▪1..63
21
22
R
Max number of fan speeds
49
50
R
Device ID: 0x0D00
50
51
R
Software version
99
100
W
Reset
▪1: Reset
4.2.3 Considerations on Temperature Registers
•AC unit Temperature Setpoint (R/W) (register 5 –in PLC addressing): This is the adjustable temperature
setpoint meant to be required by the user. This register can be read (Modbus function 3 or 4) or written
(modbus functions 5 or 16). A remote controller connected to the 3-wire bus of the Fujitsu indoor unit will
report the same temperature setpoint value as this register.
•AC unit external reference temperature (R/W) (register 23 –in PLC addressing): This register allows
providing an external temperature reference from Modbus side. If an external temperature is provided
through this register, indoor unit will use it as reference for its temperature control loop.
oThis register will have no effect in those Fujitsu RAC / domestic line splits Air-Conditioning units –
this is, those models requiring an additional communication accessory enabling communication with
FJ-AC-MBS-1.
oFor this temperature to take effect it is required that the Fujitsu AC indoor unit is configured in such
a way that it uses the “thermostat sensor in the remote controller” (this is, FJ-AC-MBS-1 will act as
thermostat sensor providing a temperature sensor reading).
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.
8
Once window contact is open, a count-down to switch off the AC Unit will start from this configured value.

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oThis configuration is done via a Fujitsu remote controller connected to the indoor unit (Function
number “42” – setting value “1” / operation of Thermosensor button) and must be done by Fujitsu
authorized installers at the time of the installation of the AC.
oRegister value after FJ-AC-MBS-1 startup is -32768, which means that no temperature reference is
provided to the AC indoor unit. In that case, AC indoor unit will use its own return path temperature
sensor as reference for its control loop.
oVirtual temperature mechanism will be activated once the first temperature value is received on
register 23 –in PLC addressing: SAC = Su–(Tu–SU)
Where:
SAC - setpoint value currently applied to the indoor unit
Su- setpoint value
Tu- external temperature reference written at BACnet side
When FJ-AC-MBS-1 detects a change in any of the values of {Su, Tu}, it will send the new setpoint
(SAC) to the indoor unit.
Moreover, notice that temperature’s values of all these four registers are expressed according to the temperature´s
format configured through its onboard DIP-Switches (See ¡ERROR!NO SE ENCUENTRA EL ORIGEN DE LA REFERENCIA.¡ERROR!NO
SE ENCUENTRA EL ORIGEN DE LA REFERENCIA.). These 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).
•Tenths of 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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DIP-switch Configuration Interface
All the configuration values on FJ-AC-MBS-1 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, SW2and SW3 on the following locations:
*Consider OFF as
The following tables apply to the interface´s configuration through DIP-switches:
SW1 –AC configuration + Modbus baud rate
AC Configuration
Modbus Baud rate
SW1-P1…5
Description
SW1-P1…5
Description
SW1-P6..8
Description
Follower (default
value)
Low Power mode
(default value)
2400bps
Header
High Performance
Mode
4800bps
Outdoor Demand rate deactivated
9600bps (Default
value)
Outdoor Demand rate deactivated (default value)
19200bps
Rotation and backup deactivated (default value)
38400bps
Rotation and backup activated
57600bps
Not used (default value)
76800bps
Not used
115200bps
Table 4.1 SW1: AC Configuration + Modbus baud rate
SW2 –Modbus Slave address + Degrees/tenths of degrees (x10) + Temp. magnitude (ºC/ºF)
SW1
IntesisBox®
FJ-AC-MBS-1
B A SG
EIA 485
SW3
SW2
ON ON
ON
SW1
1 2 3
1 2 3 4 5 6 7 8
SW3
SW2
ON
ON
ON
ON
ON
ON
ON
ON
ON
1 2 3 4 5 6 7 8
AC Unit
L1 L2
AC Unit
ON
ON
ON
ON
ON
ON
ON
ON
ON

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Table 4.2 SW2: Modbus slave address
Table 4.3 SW2: Degrees / tenths of degrees (x10) + Temperature magnitude (ºC/ºF)
SW2-P7-8
Description
Temperature values in ModBus register are represented in degrees (x1) (default value)
Temperature values in ModBus register are represented in tenths of degrees (x10)
Temperature values in ModBus register are represented in Celsius degrees (default value)
Temperature values in ModBus register are represented in Fahrenheit degrees
ON SAB
ON SAB
ON SAB
ON SAB

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SW3 –Termination resistor + BUS polarization configuration
Table 4.4 SW3: Temperature and termination resistor configuration
Implemented Functions
PA-RC2-MBS-1-LOW 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 be always be 1 when this
function is being used in case of writing)
Device LED indicator
The device includes two LED indicators to show all the possible operational states. In the following table there are
written the indicators which can be performed and their meaning.
L1 (green LED)
Device status
LED indication
ON / OFF Period
Description
During not normal
operation
LED blinking
500ms ON / 500ms OFF
Communication error
During normal
operation
LED flashing
100ms ON / 1900ms OFF
Normal operation (configured and
working properly)
L2 (red LED)
Device status
LED indication
ON / OFF Period
Description
During not normal
operation
LED Pulse
3sec ON / --- OFF
Under voltage
L1 (green LED) & L2 (red LED)
Device status
LED indication
ON / OFF Period
Description
During normal
operation
LED Pulse
5sec ON / --- OFF
Device Start-up
During not normal
operation
LED alternatively
blinking
500ms ON / 500ms OFF
EEPROM failure
SW3-P1..3
Description
EIA-485 bus without termination resistor (Default value).
Internal termination resistor of 120Ω connected to EIA-485 bus.
No BUS polarization (default value).
BUS polarization active.
ON
ON
ON
ON

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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.
To prevent fail status detected 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. This mechanism must
be supplied by the Modbus Master.
The FJ-AC-MBS-1 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 mechanism (Check the technical documentation of the Master device connected to the EIA-485 network in
each case).

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5 Mechanical & electrical characteristics
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 +70ºC
Weight
85 g.
Stock Temperature
-20ºC to +85ºC
Mounting
Wall
DIN rail EN60715 TH35.
Operational
Humidity
<95% RH, non-condensing
Terminal Wiring
(for low-voltage
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 EIA485 Plug-in screw terminal block (2 poles +
GND) with 120 Ω resistor termination and
polatization selectable by switch.
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 for Air Conditioner Unit + ModBus
baud rate
Protection
IP20
Switch 3
(SW3)
1 x DIP-Switch for ModBus RTU slave address +
temperature magnitude (ºC/ºF) and scale (x1/x10).
LED indicators
2 x Onboard LED - Operational status
53 mm
93 mm
58 mm
AC Unit
connection
DIP
Switch SW3
LED
Indicator
DIP
Switch SW1
DIP
Switch SW2
ModBus RTU Port

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6 AC Unit Types compatibility
Please, check compatibility list at to know which Fujitsu units are compatible with our gateway.
http://www.intesis.com/pdf/IntesisBox_fj-ac-xxx-1_AC_Compatibility.pdf

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7 Error codes
Intesis Codes
Error Code
Modbus
Error in
Remote
Controller
Error Description
0
N/A
No active error
65535
(-1)
N/A
Error in the communication of FJ-AC-MBS-1 or Remote Controller with the AC unit
RAC and VRF J-II / V-II / VR-II series
Error Code
Modbus
Error in
Remote
Controller
System
Error Description
0
00
Wired remote controller error
1
01
Indoor signal error
2
02
Indoor room temperature sensor error
3
03
Indoor room temperature sensor error
4
04
Indoor heat exchanger temperature sensor (middle) error
5
05
Indoor heat exchanger temperature sensor (middle) error
6
06
Outdoor heat exchanger temperature sensor (outlet) error
7
07
Outdoor heat exchanger temperature sensor (outlet) error
8
08
Power voltage error
9
09
Float switch operated
10
0A
Outdoor temperature sensor error
11
0b
Outdoor temperature sensor error
12
0C
Outdoor discharge pipe temperature sensor error
13
0d
Outdoor discharge pipe temperature sensor error
14
0E
Heat sink thermistor (Inverter) error
15
0F
Discharge temperature error
17
11
Indoor unit EEPROM error
18
12
Indoor fan error
19
13
Indoor signal error
20
14
Outdoor EEPROM error
21
15
RAC
Compressor temperature sensor error
22
16
Inverter and
Pressure switch abnormal, Pressure sensor error
23
17
Non Inverter
IPM protection
24
18
CT error
25
19
Active filter error
INV voltage protection
26
1A
Compressor location error
27
1b
Outdoor fan error
28
1C
Outdoor unit computer communication error
29
1d
2-way valve temperature sensor error
30
1E
3-way valve temperature sensor error
31
1F
Connected indoor unit error
32
20
Indoor MANUAL AUTO switch error
33
21
reverse VDD permanent stop protection
34
22
VDD permanent stop protection
36
24
Excessive high pressure protection on cooling
37
25
P.F.C. circuit error
38
26
Indoor signal error
39
27
Indoor signal error
40
28
Indoor heat exchanger temperature sensor (inlet) error
41
29
Outdoor heat exchanger temperature sensor (middle) error
42
2A
Power supply frequency detection error
43
2b
Compressor temperature error

IntesisBox®ModBus RTU –Fujitsu User Manual r1.0 EN
© Intesis Software S.L.U. - All rights reserved
This information is subject to change without notice
IntesisBox®is a registered trademark of Intesis Software SLU
URL
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19/21
Error Code
Modbus
Error in
Remote
Controller
System
Error Description
44
2C
4-way valve error
45
2d
Heat sink thermistor P.F.C. error
46
2E
Indoor unit damper error
Inverter error
47
2F
RAC
Low pressure error
48
30
Inverter and
Refrigerant circuit address set-up error
49
31
Non Inverter
Master unit, Slave unit set-up error
50
32
Connected the indoor number set-up error
51
33
P.F.C. printed circuit board error
52
34
Indoor fan 2 error
53
35
Control box thermistor error
54
36
Indoor unit CT error
55
37
Indoor fan motor 1 driving circuit error
56
38
Indoor fan motor 2 driving circuit error
117
11
Serial communication error between indoor/outdoor units
118
12
Remote controller communication error
119
13
Communication error between outdoor units
120
14
Network communication error
121
15
Scan error
122
16
Peripheral unit communication error
123
17
Electricity charge apportionment error
133
21
Indoor unit initial setting error
134
22
Indoor unit capacity abnormal
135
23
Incompatible series connection error
136
24
Connection unit number error
137
25
Connection pipe length error
138
26
RAC
Indoor unit address setting error
139
27
Inverter
Master/slave unit setting error
140
28
Models G
Other setting error
141
29
series
Connection unit number error in wired remote controller system
149
31
Indoor unit power supply abnormal
150
32
VRF
Indoor unit main PCB error
151
33
J-II/V-II/VR-II
Indoor unit display PCB error
152
34
Series
Power relay error
153
35
Indoor unit manual auto switch error
154
36
Heater relay error
155
37
Indoor unit transmission PCB error
156
38
Network convertor PCB error
157
39
Indoor unit power supply circuit error
158
3A
Indoor unit communication circuit (wired remote controller) error
165
41
Indoor unit room temp. thermistor error
166
42
Indoor unit heat ex. temp. thermistor error
167
43
Humidity sensor error
168
44
Light sensor error
169
45
Gas sensor error
170
46
Float sensor error
171
47
Water temperature sensor error
172
48
Warm water flow rate sensor error
173
49
Heater sensor error
181
51
Indoor unit fan motor 1 error
182
52
Indoor unit coil (expansion valve) error
183
53
Indoor unit water drain abnormal
184
54
Air cleaning function error
185
55
Filter cleaning function error
186
56
Water circulation pump error
187
57
Indoor unit damper error

IntesisBox®ModBus RTU –Fujitsu User Manual r1.0 EN
© Intesis Software S.L.U. - All rights reserved
This information is subject to change without notice
IntesisBox®is a registered trademark of Intesis Software SLU
URL
EmailP
hone
http://www.intesisbox.com
[e-mail]
[phone]
20/21
Error Code
Modbus
Error in
Remote
Controller
System
Error Description
188
58
Indoor unit intake grille position error
189
59
Indoor unit fan motor 2 error
195
5U
Indoor unit miscellaneous error
197
61
Outdoor unit power supply abnormal
198
62
Outdoor unit main PCB error
199
63
Outdoor unit inverter PCB error
200
64
Outdoor unit active filter/PFC circuit error
201
65
Outdoor unit IPM error
202
66
Convertor distinction error
203
67
Outdoor unit power short interruption error (protective operation)
204
68
Outdoor unit magnetic relay error
205
69
Outdoor unit transmission PCB error
206
6A
Outdoor unit display PCB error
213
71
Outdoor unit discharge temp. thermistor error
214
72
Outdoor unit compressor temp. thermistor error
215
73
Outdoor unit heat ex. temp. thermistor error
216
74
Outside air temp. thermistor error
217
75
Outdoor unit suction gas temp. thermistor error
218
76
Outdoor unit operating valve thermistor error
219
77
Outdoor unit heat sink temp. thermistor error
220
78
Expansion valve temperature sensor error
229
81
Receiver liquid level detection sensor error
230
82
Outdoor unit sub-cool heat ex. gas temp. thermistor error
231
83
Outdoor unit liquid pipe temp. thermistor error
232
84
RAC
Outdoor unit current sensor error
233
85
Inverter
Fan motor current sensor error
234
86
Models G
Outdoor unit pressure sensor error
235
87
series
Oil sensor error
245
91
Outdoor unit compressor 1 error
246
92
Outdoor unit compressor 2 error
247
93
VRF
Outdoor unit compressor start up error
248
94
J-II/V-II/VR-II
Outdoor unit trip detection
249
95
Series
Outdoor unit compressor motor control error
250
96
Open loop error (Field-weakening relevant)
251
97
Outdoor unit fan motor 1 error
252
98
Outdoor unit fan motor 2 error
253
99
Outdoor unit 4-way valve error
254
9A
Outdoor unit coil (expansion valve) error
259
9U
Outdoor unit miscellaneous error
261
A1
Outdoor unit discharge temperature 1 error
262
A2
Outdoor unit discharge temperature 2 error
263
A3
Outdoor unit compressor temperature error
264
A4
Outdoor unit pressure error 1
265
A5
Outdoor unit pressure error 2
266
A6
Outdoor unit heat exchanger temperature error
267
A7
Suction temperature abnormal
268
A8
Poor refrigerant circulation
269
A9
Current overload error
270
AA
Outdoor unit special operation error
271
AC
Ambient temperature error
272
AF
Out of the possible operation range
273
AJ
Freeze protection operated
277
C1
Peripheral unit main PCB error
278
C2
Peripheral unit transmission PCB error
279
C3
Peripheral unit PCB 1 error
280
C4
PCB 2 error
281
C5
PCB 3 error