Inverter Fusion RAV-SM2000DH FS Installation instructions

DX Air Curtain
Installation and Owner's manual
Model name: For commercial use
RAV-SM2000DHFS Universal DX Air Curtain

ADOPTION OF R410A REFRIGERANT
This Air Conditioner is a type which adopts a HFC refrigerant (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
This appliance is for commercial use only and should not be accessible to the general public.
This appliance is not intended for use by person (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Contents
DX Air Curtain Installer
2
Please read this Installation Manual carefully before installing the DX Air Curtain.
This Manual describes the installation method of the DX Air Curtain.
You must also refer to the Installation Manual attached to the Toshiba outdoor unit.
1INSTALLER: APPLICATION .............................................................................................................................. 3
2INSTALLER: PRECAUTIONS FOR SAFETY .................................................................................................... 4
3INSTALLER: INSTALLATION ............................................................................................................................ 4
4INSTALLER: ELECTRICAL WORK ................................................................................................................... 5
5INSTALLER: APPLICABLE CONTROLS .......................................................................................................... 9
6INSTALLER: TEST RUN................................................................................................................................................15
7INSTALLER: TROUBLE SHOOTING............................................................................................................... 16
8INSTALLER: MAINTENANCE GUIDELINES................................................................................................... 19
9INSTALLER: OPTIONAL PARTS..................................................................................................................... 20
10 INSTALLER: TECHNICAL SPECIFICATIONS................................................................................................. 21
11 INSTALLER: TECHNICAL DRAWINGS........................................................................................................... 24
12 INSTALLER: DECLARATION OF CONFORMITY........................................................................................... 25
13 INSTALLER: SERVICE PARTS ............................................................................................................................. 26
14 INSTALLER: F-GAS LABEL AND WARNINGS ON REFRIGERANT LEAKAGE............................................ 27
15 OWNER: PRECAUTIONS FOR SAFETY.............................................................................................................. 28
16 OWNER: REMOTE CONTROLLER ...................................................................................................................... 29
17 OWNER: CORRECT USAGE........................................................................................................................................32
18 OWNER: TIMER OPERATION .....................................................................................................................................34
19 OWNER: MAINTENANCE ...................................................................................................................................... 35
20 OWNER: AIR CONDITIONER OPERATIONS AND PERFORMANCE ........................................................... 37
This symbol mark is for EU countries only. This symbol mark is according to the directive 2002/96/EC Article
10 Information for users and Annex IV.
This product is designed and manufactured with high quality materials and components which can be
recycled and reused.
This symbol means that electrical and electronic equipment, at the end-of-life, should be disposed of
separately from your household waste.
Please dispose of this equipment at your local community waste collection / recycling centre.
In the European Union there are separate collection systems for used electrical and electronic product.

DX Air Curtain Installe
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1APPLICATION
Every air curtain is manufactured conforming with European directives and the latest standards. Air curtains prevent air
currents and draughts and produce a comfortable environment in the door entrance area
The air curtains are manufactured to the latest technical standards and regulations. The quality controls include
material and function controls and ensure a quality product with a long life span.
The air curtains are built to CE guide lines.
The fan-motors used in the Air Curtain comply with ErP 2013 (Commission Regulation (EU) No 327/2011).
Correct installation is of paramount importance. This includes that unit and control are also used in the correct
environment. The air curtains and controls are manufactured for indoor use only.
Do not install in humid, aggressive or explosive areas. During the installation the unit has to be kept clean and dry.
Applications:
DX Air curtains are only applicable:-
For indoor areas (shops, warehouses, exhibition halls, or banks, etc.)
Installed in false ceilings or free hanging
DX Air curtains must not be installed:-
In humid areas like swimming pools
Areas with danger of explosion
Areas with aggressive air
Areas with extreme high dust exposure
Vertically (Only horizontally hung installations are permitted)
Twin / Triple Restriction:
To ensure reliable operation DX Air Curtains must be connected to a single outdoor unit (no twin or triple installations).
Model Range:
Built-in unit (DH)
Suitable for installation in the ceiling space above the door.
Door widths: 2.5m and 3.2m
Free-Hanging unit (DH)
Suitable for installation above the door.
Door widths: 2.5m and 3.2m
"Air On" Temperature Limits: Minimum 12°CDB / Maximum 28°CDB
In Heating mode (reverse cycle) when the outdoor unit is producing hot gas, the DX coil in the Air Curtain is effectively
the condenser. Air temperatures flowing across the coil below this level, can cause over condensing of the refrigerant.
This can result in liquid being returned to the compressor which will cause a mechanical failure of the outdoor unit. Low
air temperatures will also cause the unit to use it's defrost mode more often
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2PRECAUTIONS FOR SAFETY
Ensure that all Local, National and International regulations are satisfied.
Read this "PRECAUTIONS FOR SAFETY" carefully before installation.
The precautions described below include the important items regarding safety. Observe them without fail.
After the installation work, perform a trial operation to check for any problem.
Follow the installation manual to explain how to use and maintain the unit to the customer.
Turn off the main power supply switch (or breaker) before the unit maintenance.
Ask the customer to keep the installation manual.
THIS AIR CONDITIONER ADOPTS THE HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE
LAYER.
The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is
approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also
been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does
not enter the refrigerating cycle.
To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of
the main unit and installation tools are changed from those of conventional refrigerant.
Accordingly the exclusive tools are required for the new refrigerant (R410A).
For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not
enter. Moreover, do not use the existing piping because there are problems with the pressure-resistance force and
impurity in it.
This appliance must be connected to the main power supply by means of a switch with a constant separation of at least
3mm.
3INSTALLATION
POSITIONING OF THE AIR CURTAIN
The unit should be installed as close as possible to the wall and
as flush as possible to the top of the door.
The outlet flow should always be free and not interrupted or
obstructed.
Don‘t exceed the recommended installation height recommended
per type. Type plate can be found on the inside of the access
panel.
Maximum distance from wall to air curtain <100mm
Installation height
Type Door Height Range
2.5 – 3.2m
DO NOT STAND UNDERNEATH THE UNIT WHILE LIFTED OR DURING INSTALLATION
DO ONLY USE APPROPRIATE TOOLS FOR LIFTING AND INSTALLING
FOLLOW ALL LOCAL RULES AND REGULATIONS
Refrigerant (R410A) Air Conditioner Installation
To Disconnect the A
pp
liance from Main Power Su
pp
l
y
Inlet grill
Access cover
Door
frame
External
wall
Universal DX Air Curtain
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RAVSM2000DH
Fixing
points 8 x M10 captive nuts
The access panel and E-Box cover has to be accessible at all times!
In all situations the accessibility of the unit over the whole length of the unit has to be ensured.
Please refer to the technical drawings for dimensions.
For installation within a ceiling void it has to be ensured that the access panel between in and outlet grille
is accessible over the whole length of the unit.
CEILING MOUNTING
Please use the fixing points. The number of fixing points depends on model and length of the air curtain.
BRAZED CONNECTIONS
The Air Curtain is fitted with R410A Flare Nuts and is charged with
Nitrogen Gas (1 barg) when shipped.
Gas Pipe External 15.9mm  5/8''
Liquid Pipe External 9.5mm  3/8''
Please refer to the installation Manual attached to the Toshiba
Outdoor unit for flare nut instructions.
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4ELECTRICAL WORK
WARNING
1. Using the specified wires, ensure to connect
the wires, and fix wires securely so that the
external tension to the wires do not affect the
connecting part of the terminals.
Incomplete connection or fixation may cause a fire,
etc.
2. Be sure to connect earth wire (grounding work).
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for telephone
wires.
3. Appliance shall be installed in accordance with
national wiring regulations.
Capacity shortage of power circuit or incomplete
installation may cause an electric shock or a fire.
CAUTION
This indoor unit has no power cord.
If incorrect / incomplete wiring is carried out, it will
cause an electrical fire or smoke.
Install an earth leakage breaker.
If an earth leakage breaker is not installed, an
electric shock may be caused.
Be sure to use the cord clamps attached to the
product.
Do not damage or scratch the conductive core and
inner insulator of power and inter-connecting wires
when peeling them.
Use the power cord and inter-connecting wire of
specified thickness, type and protective devices
required
REQUIREMENT
For power supply wiring, strictly conform to the
Local Regulation for each country.
For wiring of power supply of the outdoor units,
follow the Installation manual of each outdoor unit.
Never connect 220-240V power to the terminal
blocks ( , etc) for control wiring (otherwise the
system will fail).
Perform the electric wiring so that it does not come
in to contact with the high-temperature part of the
pipe.
The coating may melt in an accident
After connecting wires to the terminal blocks, be
sure to leave sufficient wire before fixing with the
cord clamp.
Run the refrigerant piping and control wiring line in
the same line.

Do not turn on the power of the indoor unit until
vacuuming of the refrigerant pipes is completed.
Remote controller wiring
2-core non polarity wire is used for the remote
controller wiring.
How to wire
1. Connect the wires from the terminal block on the
outdoor unit to the same numbered terminal on
the DX Air Curtain terminal block. Use wires to
H07 RH-F or 60245 IEC 66 (1.5mm2or more).
2. In the case of unsheathed redundant cords
(conductors) be sure to insulate with electrical
insulation tape.
Fix them so that they do not touch any electrical
or metal parts.
REQUIREMENT
Be sure to connect the wires matching the
terminal numbers. Incorrect connection causes a
trouble.
Be sure to pass the wires through the bushing of
the wiring connection port of the DX Air Curtain.
Keep a margin (approx. 100mm) on a wire to
hang down the electrical parts box at servicing,
etc.
The low-voltage circuit is provided for the remote
controller (Do not connect the high-voltage
circuit).
Wiring
1. Remove the E-Box cover on the DX Air Curtain.
2. Strip wire ends (10mm).
3. Connect the wires from the terminal block on the
outdoor unit to the same numbered terminal on
the DX Air Curtain terminal block.
4. Connect the ground wires to the corresponding
terminals.
5. Replace the E-Box cover on the LC DX Air
Curtain.
Earth Line
Connecting wire
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Remote controller wiring
2-core with non-polarity wire is used for wiring of the remote controller wiring and group remote controllers wiring
(0.5mm2to 2.0mm2)
Strip off approx. 9mm the wire to be connected.
Remote controller wiring. Remote controller inter-unit wiring Wire size: 0.5mm2to 2.0mm2
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + ……..Ln
In case of wired type only Up to 500m
In case of wireless type included Up to 400m
Total wire length of remote controller inter-unit wiring = L + L1 + L2 + ……..Ln Up to 200m
CAUTION
The remote controller wire (communication line) and AC220-240V wires cannot be parallel to contact each other and
cannot be stored in the same conduits. If doing so, a trouble may be caused on the control system due to noise, etc.
Wiring between indoor and outdoor units
▼Single phase outdoor unit ▼Three phase outdoor unit
Remote controller wiring
As the remote controller wire has non-polarity, there is no problem if connections to indoor unit terminal blocks A
and B are reversed.
▼Wiring diagram
Remote controller inter-unit wiring
(Max. 8 units)
Remote
Controlle
r
Indoor Unit Indoor Unit Indoor Unit Indoor Unit
Remote
Controller
wiring
Terminal block
Remote
Controller unit
Terminal block for
remote controller
wiring of indoor unit
Remote controller wire
(Field supply)
Remote Controller
Remote controller
Wiring
Indoor side
Indoor / Outdoor
Connecting wires
Outdoor side
Remote Controller
Remote controller
Wiring
Indoor side
Indoor / Outdoor
Connecting wires
Outdoor side
Power Supply Power Supply
7

DX Air Curtain Installe
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Universal DX Air Curtain
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DX Air Curtain Installe
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5 APPLICABLE CONTROLS
REQUIREMENT
When you use this air conditioner for the first time,
it takes approx. 5 minutes until the remote
controller becomes available after power-on. This
is normal.
<When the power is turned on for the first time
after installation>
It takes approx. 5 minutes until the remote
controller becomes available.
<When the power is turned on for the second
(or later) time>
It takes approx. 1 minute until the remote
controller becomes available.
Normal settings were made when the unit was
shipped from factory.
Change the indoor unit as required.
Use the wired remote controller to change the
settings.
The settings cannot be changed using the wireless
remote controller, sub remote controller, or remote
controller-less system (for central remote controller
only).
Therefore, install the wired remote controller to
change the settings.

Changing of settings for
applicable controls
Basic procedure for changing settings
Change the settings while the air conditioner is not
working.
(Be sure to stop the air conditioner before making
settings).
Procedure 1
Push + + buttons simultaneously for at
least 4 seconds.
After a while, the display flashes as shown in the
figure.
Confirm that the CODE No. is [10].
If the CODE No. is not [10] push button to
erase the display content and repeat the
procedure from the beginning.
(No operation of the remote controller is accepted
for a while after button is pushed).
(While air conditioners are operated under the
group control, "ALL" is displayed first. When
is pushed, the indoor unit number
displayed following "ALL" is the header unit).
(* Display content varies with the
indoor unit model).
Approx. 5 minutes
Power
on
Remote
controller
is available
flashes goes out
Approx. 1 minutes
Power
on
Remote
controller
is available
flashes goes out
9

DX Air Curtain Installe
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Procedure 2
Each time you push button, indoor unit
numbers in the control group change cyclically.
Select the indoor unit you want to change settings for.
The fan of the selected unit runs and the louvers start
swinging. You can confirm the indoor unit for which
you want to change settings.
Procedure 3
Using "TEMP", buttons, specify CODE
NO. [ ].
Procedure 4
Using timer "TIME" buttons, select SET
DATA [ ].
Procedure 5
Push button. When the display changes from
flashing to lit, the setup is completed.
To change settings of another indoor unit, repeat
from procedure 2.
To change other settings of the selected indoor unit,
repeat from procedure 3.
Use button to clear the settings.
To make settings after button was pushed,
repeat from procedure 2.
Procedure 6
When settings have been completed, push button
to determine the settings.
When button is pushed, flashes and then
the display content disappears and the air conditioner
enters the normal stop mode.
(While is flashing, no operation of the remote
controller is accepted).
The circuit board of the DX AIR CURTAIN is configured at the factory. For reference these are the settings used. Any
changes must be set using the DN code menu.
Follow to the basic operation procedure (1 →2 →3 →4 →5 →6).
DN
CODE DX AIR CURTAIN MODEL RAVSM2000DHFS
01 DIRTY FILTER ALARM
(Disabled) 0000
03 CENTRAL CONTROL ADDRESS
(Unset) 0099*
0d AUTO MODE
(Disabled) 0001
10 DEVICE TYPE 0004
11 CAPACITY CODE 0017
12 POWER ADDRESS
(Unset) 0099*
13 DEVICE ADDRESS
(Unset) 0099*
14 GROUP ADDRESS
(Unset) 0099*
2d AVAILABLE MODE
(Heating & Fan Only) 0009
9b FAN CONTROL
(Disabled)
0001 (Fan motor operates during defrost cycle)
(To stop fan motor operation during defrost cycle change to 0000)
* 0099 = address not assigned (system addresses are assigned during the automatic addressing by the system.
Central addresses can be assigned automatically with a central remote control or manually. Subsequent
modifications may lead to malfunction.)
DX Air Curtain Confi
g
uration
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DX Air Curtain Installe
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To secure better effect of
heating
When it is difficult to obtain satisfactory heating
due to installation place of the indoor unit or
structure of the room, the detection temperature
of heating can be raised. Also use the circulator,
etc. to circulate heat air near the ceiling.
Follow to the basic procedure
(1→2→3→4→5→6).
For the CODE No. in Procedure 3, specify
[06].
For the set data in Procedure 4, select the
setup data of shift value of detection
temperature to be set up from the table
below.
Setup Data Detection temp shift value
0000 No shift
0001 +1°C
0002 +2°C (at shipment from factory)
0003 +3°C
0004 +4°C
0005 +5°C
0006 +6°C
Group Control
In case of group control for system of multiple units.
One remote controller can control maximum 8 indoor units
as a group.
▼In case of group control in single system.
For wiring procedure and wiring method of the individual
line (Identical refrigerant line) system, follow to
"Electrical work".
Wiring between lines is performed in the following
procedure.
Connect the terminal block (A/B) of the indoor unit
connected with a remote controller to the terminal blocks
(A/B) of the indoor units of other indoor units by wiring
the inter-unit wire of the remote controller.
When the power supply has been turned on, the
automatic address setup starts and which indicates that
address is being set up on the display part. during setup
of automatic address, the remote controller operation is
not accepted.
Required time up to the finish of automatic
addressing is approx. 5 minutes.
NOTE
In some cases, it is necessary to change the address
manually after setup of the automatic address according to
the system configuration of the group control.
Outdoor unit Outdoor unit Outdoor unit Outdoor unit Outdoor unit
Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit
(Max. 8 units)
Remote controller Finish of address setup by Power- ON
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Group Control procedure example
Manual address setup procedure
While the operation stops, change the setup.
(Be sure to stop operation of the unit).
Procedure 1
Push simultaneously + + buttons for 4
seconds or more. After a while, the display part
flashes as shown below. Check the displayed CODE
No. is [10].
When the CODE No. is other than [10], push
button to erase the display and repeat procedure
from the first step.
(After pushing button, operation of the remote
controller is not accepted for approx. 1 minute).
(For group control, No. of the first displayed indoor
unit becomes the header unit).
Procedure 2
Every pushing button, the indoor unit No. in
the group control is displayed in order. Select the
indoor unit of which setup is changed.
In this time, the position of the indoor unit of which
setup is changed can be confirmed because fan of
the selected indoor unit operate.
Procedure 3
1. Using temp. setup buttons, specify CODE
No. [12].
(CODE No. [12]: Line address).
2. Using timer time buttons, change the line
address from [3] to [2].
3. Push button.
In this time, the setup finishes when the display
changes from flashing to lighting.
Indoor unit No. before setup change is displayed.
Procedure 4
1. Using temp. setup buttons, specify
CODE No. [13].
(CODE No. [13]: Indoor address)
2. Using timer time buttons, change the
indoor address form [3] to [2].
3. Push button.
In this time, the setup finishes when the display
changes from flashing to lighting.
Indoor unit No. before setup change is displayed
Procedure 5
1. Using temp. setup buttons, specify
CODE No. [14].
(CODE No. [14]: Group address).
2. Using timer time buttons, change the
setup data from [0001] to [0002].
(Setup data [Header unit: 0001] [Follower unit:
0002])
3. Push button.
In this time, the setup finishes when display
changes from flashing to lighting.
Indoor unit No. before setup change is displayed
(* Display changes according to
the model No. of indoor unit.)
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Procedure 6
If there is other indoor unit to be changed, repeat
procedure 2to 5to change the setup.
When the above setup has finished, push to
select the indoor unit No. before change of setup,
specify CODE No. [12], [13], [14] in order with temp.
setup buttons, and then check the changed
contents.
Address change check before change:
[3-3-1] →After change [2-2-2].
Pushing button clears the contents of which
setup was changed.
(In this case, procedure from 2is repeated).
Indoor unit No. before setup change is displayed
Procedure 7
After check of the changed contents, push
button, the display disappears and the status
becomes the usual stop status. (When pushing
button the operation from the remote controller is not
accepted for approx. 1 minute).
If the operation from the remote controller is not
accepted even 1 minute or more passed after
pushing button, it is considered that the
address setup is incorrect.
In this case, the automatic address must be set
again set up.
Therefore repeat procedure of the setup change
from procedure 1.
To recognize the position of the corresponding
indoor unit though the indoor unit No. is known.
Check the position during operation stop.
(Be sure to stop operation of the set).
Procedure 1
Push simultaneously + buttons for 4
seconds or more.
After a while, the display part flashes and the display
appears as shown below.
In this time, the position can be checked because fan
of the indoor unit operate.
For the group control, the indoor unit No. is
displayed as [ ] and fans of all the indoor
units in the group control operate.
Check the display CODE No. is [01].
When the CODE No. is other than [01], push
button to erase the display and repeat procedure
from the first step.
(After pushing button, operation of the remote
controller is not accepted for approx. 1 minute).
Procedure 2
In the group control, every pushing button,
the indoor No. in the group control is displayed in
order.
In this time, the position of the indoor unit can be
confirmed because the only fan of the selected
indoor unit operate.
(For a group control, No. of the firstly displayed
indoor unit becomes the header unit).
Procedure 3
After confirmation, push button to return the
mode to the usual mode.
When pushing the button, the display disappears
and the status becomes the usual stop status.
(When pushing button the operation from the
remote controller is not accepted for approx. 1
minute).
(* Display changes according to
the model No. of indoor unit.)
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 Remote controller switch monitoring function
This function is available to call the service monitor mode from the remote controller during a test run to acquire
temperatures of sensors of the remote controller, indoor unit and outdoor unit.
1. Push and buttons simultaneously for at least 4 seconds to call the service monitor mode.
The service monitor indicator lights up and the header indoor unit number is displayed first. CODE No. is also
displayed.
2. Pushing TEMP. buttons, select the number of sensor, etc. (CODE No.) to be monitored (see the following
table).
3. Pushing (left side of button), select an indoor unit in the group to be monitored. The sensor temperatures
of indoor units and their outdoor unit in the control group are displayed.
4. Push button to return to the normal display.
Indoor Unit Data
CODE No. Data Name
01 Room temperature (remote controller)
02 Indoor unit intake air temperature (TA)
03 Indoor unit heat exchanger (coil)
temperature (TCJ)
04 Indoor unit heat exchanger (coil)
temperature (TC)
F3 Indoor unit fan cumulative operating
hours (x1 h)
Outdoor Unit Data
CODE No. Data Name
60 Outdoor unit heat exchanger (coil)
temperature (TE)
61 Outside air temperature (TO)
62 Compressor discharge temperature (TD)
63 Compressor suction temperature (TS)
64 
65 Heat sink temperature (THS)
6A Operating current (x1/10)
F1 Compressor cumulative operating hours
(x100h)
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DX Air Curtain Installe
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6 TEST RUN
 Before test run
Before turning on the power supply, carry out the
following procedure.
1) Using 500V-Megger, check that the resistance
of 1MΩor more exists between the terminal
block of the power supply and the earth
(grounding).
If resistance of less than 1MΩis detected, do
not run the unit.
2) Check the valve of the outdoor unit being
opened fully.
To protect the compressor at activation time,
leave power-ON for 12 hours or more before
operating.

How to execute a test run
Using the remote controller, operate the unit as
usual.
A forced test run can be executed in the following
procedure even if the operation stops by thermo-
OFF.
In order to prevent a serial operation, the forced test
run is released after 60 minutes have passed and
returns to the usual operation.
CAUTION
Do not use the forced test run for cases other
than the test run because it applies excessive
load to the devices.
In case of wired remote controller.
Procedure 1
Keep button pushed for 4 seconds or more.
[TEST] is displayed on the display part and the
selection of mode in the test mode is permitted.
Procedure 2
Push button.
Procedure 3
Using button, select the operation mode,
[ HEAT].
Do not run the air conditioner in a mode other
than [ HEAT].
The temperature controlling function does not
work during test run.
The detection of errors is performed as usual.
Procedure 4
After the test run, push button to stop a
test run.
(Display part is same as procedure 1).
Procedure 5
Push check button to cancel (release from) the
test run mode.
([TEST] disappears on the display and the status
returns to normal).
15

DX Air Curtain Installe
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After the TEST RUN
Please check the following after the TEST RUN of the air curtain:
Are all functions of the control working
Are all fans run freely
7 TROUBLE SHOOTING
 Confirmation and check
When a trouble occurred in the air conditioner, the
check code and the indoor unit No. appear on the
display part of the remote controller.
The check code is only displayed during the
operation.
If the display disappears, operate the air conditioner
according to the following "Confirmation of error
history" for confirmation.

Confirmation of error history
When a trouble occurred on the air conditioner, the
trouble can be confirmed with the following
procedure. (The trouble history is stored up to 4
troubles.)
The history can be confirmed from both operating
status and stop status.
Procedure 1
When pushing and buttons at the same time
for 4 seconds or more, the following display
appears.
If [ service check] is displayed, the mode enters in
the trouble history mode.
[01: Order of trouble history] is displayed in CODE
No. window.
[Check code] is displayed in CHECK window.
[Indoor unit address in which an error occurred] is
displayed in Unit No.
Procedure 2
Every pushing of "TEMP." button used to
set temperature, the trouble history stored in
memory is displayed in order.
The numbers in CODE No. indicate CODE No. [01]
(latest) →[04] (oldest).
REQUIREMENT
Do not push button because all of trouble
history
of the indoor unit will be deleted.
Procedure 3
After confirmation, push button to return to the
usual display.
Check code Indoor unit No. in which
an error occured
16

Check codes and parts to be checked
DX Air Curtain Installe
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Indication Main defective parts Judging
device Parts to be checked / error description
Air
conditioner
status
E01
No header remote
controller Remote
controller
Incorrect remote controller setting --- The header remote controller has not
been set (including two remote controllers). *
Remote controller
communication error No signal can be received from the indoor unit.
E02 Remote controller
transmission error
Remote
controller
Indoor/outdoor connecting wires, indoor P.C. board, remote controller ---No
signal can be sent to the indoor unit. *
E03
Indoor unit-remote
controller regular
communication error
Indoor Remote controller, network adapter, indoor P.C. board --- No data is received
from the remote controller or network adapter. Auto-reset
E04
Indoor unit-outdoor
unit serial
communication error Indoor Indoor/outdoor connecting wires, indoor P.C. board, outdoor P.C. board ---
Serial communication error between indoor unit and outdoor unit Auto-reset
IPDU-CDB
communication error
E08 Duplicated indoor
addresses Indoor Indoor address setting error --- The same address as the self-address was
detected. Auto-reset
E09 Duplicated header
remote controllers
Remote
controller
Remote controller address setting error ---Two remote controllers are set as
header in the double-remote controller control. *
(* The header indoor unit stops raising alarm and follower indoor units continue
to operate.)
E10 CPU-CPU
communication error Indoor Indoor P.C. board --- Communication error between main MCU and motor microcomputer MCU Auto-reset
E18
Header indoor unit-
indoor follower unit
regular
communication error
Indoor
Indoor P.C. board --- Regular communication is not possible between header
and follower indoor units or between twin header (main) and follower (sub)
units.
Auto-reset
E31 IPDU
communication error Outdoor Communication error between IPDU and CDB Entire stop
F01
Indoor unit heat
exchanger sensor
(TCJ) error
Indoor Heat exchanger sensor (TCJ) , indoor P.C. board --- Open-circuit or short-
circuit of the heat exchanger sensor (TCJ) was detected. Auto-reset
F02
Indoor unit heat
exchanger sensor
(TC) error
Indoor Heat exchanger sensor (TC), indoor P.C. board --- Open-circuit or short-circuit
of the heat exchanger sensor (TC) was detected. Auto-reset
F04
Outdoor unit
discharge temp.
sensor (TD) error
Outdoor Outdoor temp. sensor (TD), outdoor P.C. board --- Open-circuit or short-circuit
of the discharge temp. sensor was detected. Entire stop
F06 Outdoor unit temp.
sensor (TE/TS) error Outdoor Outdoor temp. sensors (TE/TS), outdoor P.C. board --- Open-circuit or short- circuit of the heat exchanger temp. sensor was detected. Entire stop
F07 TL sensor error Outdoor TL sensor may be displaced, disconnected or short-circuited. Entire stop
F08
Outdoor unit outside
air temp. sensor
error
Outdoor Outdoor temp. sensor (TO), outdoor P.C. board --- Open-circuit or short-circuit
of the outdoor air temp. sensor was detected.
Operation
continued
F10
Indoor unit room
temp. sensor (TA)
error
Indoor Room temp. sensor (TA), indoor P.C. board --- Open-circuit or short-circuit of
the room temp. sensor (TA) was detected. Auto-reset
F12 TS (1) sensor error Outdoor TS (1) sensor may be displaced, disconnected or short-circuited. Entire stop
F13 Heat sink sensor
error Outdoor Abnormal temperature was detected by the temp. sensor of the IGBT heat sink. Entire stop
F15 Temp. sensor
connection error Outdoor Temp. sensor (TE/TS) may be connected incorrectly. Entire stop
F29 Indoor unit, other
P.C. board error Indoor Indoor P.C. board --- EEPROM error Auto-reset
F31 Outdoor unit P.C.
board Outdoor Outdoor P.C. board ---- In the case of EEPROM error. Entire stop
H01
Outdoor unit
compressor
breakdown
Outdoor
Current detect circuit, power voltage --- Minimum frequency was reached in the
current releasing control or short-circuit current (Idc) after direct excitation was
detected
Entire stop
H02 Outdoor unit
compressor lock Outdoor Compressor circuit --- Compressor lock was detected. Entire stop
H03 Outdoor unit current
detect circuit error Outdoor Current detect circuit, outdoor unit P.C. board --- Abnormal current was
detected in AC-CT or a phase loss was detected. Entire stop
H04 Case thermostat
operation (1) Outdoor Malfunction of the case thermostat Entire stop
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DX Air Curtain Installe
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Indication Main defective parts Judging
device Parts to be checked / error description
Air
conditioner
status
H06
Outdoor unit low-
pressure system
error
Outdoor Current, high-pressure switch circuit, outdoor P.C. board --- Ps pressure sensor
error was detected or low-pressure protective operation was activated. Entire stop
L03 Duplicated header
indoor units Indoor Indoor address setting error --- There are two or more header units in the
group. Entire stop
L07
Group line in
individual indoor unit

Indoor Indoor address setting error --- There is at least one group-connected indoor
unit among individual indoor units. Entire stop
L08 Indoor group
address not set Indoor Indoor address setting error --- Indoor address group has not been set. Entire stop
L09 Indoor power level
not set Indoor Indoor power level has not been set. Entire stop
L10 Outdoor unit P.C.
board Outdoor In the case of outdoor P.C. board setting error jumper wire (for service) Entire stop
L20 LAN communication
error
Network
adapter
central
control
Address setting, central control remote controller, network adapter ---
Duplication of address in central control communication Auto-reset
L29 Other outdoor unit
error Outdoor
Other outdoor unit error Entire stop
1) Communication error between IPDU MCU and CDB MCU Entire stop
2) Abnormal temperature was detected by the heat sink temp. sensor in IGBT.
L30
Abnormal external
input into indoor unit
(interlock)
Indoor External devices, outdoor unit P.C. board --- Abnormal stop due to incorrect
external input into CN80 Entire stop
L31 Phase sequence
error, etc. Outdoor Power supply phase sequence, outdoor unit P.C. board --- Abnormal phase sequence of the 3-phase power supply
Operation
continued
(thermostat
OFF)
P01 Indoor unit fan error Indoor Indoor fan motor, indoor P.C. board --- Indoor AC fan error (fan motor thermal
relay activated) was detected. Entire stop
P03
Outdoor unit
discharge temp.
error
Outdoor An error was detected in the discharge temp. releasing control. Entire stop
P04
Outdoor unit high-
pressure system
error
Outdoor High-pressure switch --- The IOL was activated or an error was detected in the
high-pressure releasing control using the TE. Entire stop
P05 Open phase
detected Outdoor The power cable may be connected incorrectly. Check open phase and voltages of the power supply. Entire stop
P07 Heat sink overheat Outdoor Abnormal temperature was detected by the temp. sensor of the IGBT heat sink. Entire stop
P10 Indoor unit water
overflow detected Indoor Drain pipe, clogging of drainage, float switch circuit, indoor P.C. board --- Drainage is out of order or the float switch was activated. Entire stop
P15 Gas leakage
detected Outdoor There may be gas leakage from the pipe or connecting part. Check for gas leakage. Entire stop
P19 4-way valve error Outdoor
(Indoor)
4-way valve, indoor temp. sensors (TC/TCJ) --- An error was detected due to
temperature drop of the indoor unit heat exchanger sensor when heating.
Auto-reset
(Auto-reset)
P20 High-pressure
protective operation Outdoor High-pressure protection. Entire stop
P22 Outdoor unit fan
error Outdoor Outdoor unit fan motor, outdoor unit P.C. board --- An error (over current, locking, etc.) was detected in the outdoor unit fan drive circuit. Entire stop
P26 Outdoor unit inverter
Idc activated Outdoor IGBT, outdoor unit P.C. board, inverter wiring, compressor --- Short-circuit protection for compressor drive circuit devices (G-Tr/IGBT) was activated. Entire stop
P29 Outdoor unit position
error Outdoor Outdoor unit P.C. board, high-pressure switch ---Compressor motor position
error was detected. Entire stop
P31 Other indoor unit
error Indoor
Another indoor unit in the group is raising an alarm. Entire stop
E03/L07/L03/L08 alarm check locations and error description. Auto-reset
 The air conditioner automatically enters the auto-address setting mode.
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DX Air Curtain Installe
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8MAINTENANCE GUIDELINES
Maintenance interval
The maintenance of the units should be carried out before the heating period, to ensure correct functioning
of the air curtain.
Cleaning interval
The cleaning of the inlet grilles depends on the contamination of the unit. It is recommended to clean it every
3-6 weeks.
Casing
External staining on the unit doesn‘t have an impact on the functioning of the air curtain. For esthetical
reasons we recommend to clean the casing with a damp cloth and a mild cleaning detergent.
Inlet grille (filter)
The units are designed for easy cleaning and servicing. It is not necessary to disassemble the unit to clean
the inlet grille. All dust can be removed with a Hoover and a brush. It can also be cleaned with a damp cloth.
Please let the inlet grille dry before restarting the unit!
Heat exchanger
To open the access panel, please remove the inlet grille first by opening the clip fixings with a flat screw
driver. Security ropes prevent the grilles to fall down. The access panel is provided with a security screw that
can be removed after the inlet grille has been detached. Please be careful when removing access panel and
outlet grille.
For security reasons the unit has to be taken off the electrical power supply.
The R410A DX Coil has to be cleaned with a Hoover and a brush
behind the inlet grille.
The fans or motors are low maintenance. All motors are long-term
lubricated and do not need special maintenance. Only check that the
fans run freely and the fixing points are in order.
Recycling
It is possible to recycle air curtains.
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DX Air Curtain Installe
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9OPTIONAL PARTS
20
▼ Remote Controllers
RBC-AMT32E Wired remote controller
RBC-AMS41E Wired remote controller with weekly timer
RBC-AMS54E Lite-Vision plus remote controller
RBC-AS41E Simplified wired remote controller for domestic and hotel application
TCB-EXS21TLE Schedule and Weekly Timer accessory
TCB-AX32E2 Wireless remote controller and receiver
▼ TCB-TC21LE2 Remote Temperature Sensor
The Optional remote room temperature sensor uses the A/B Bus. It is connected to
terminals A and B on the LC DX Interface. It is recommended where there is a High
Ceiling; the TA sensor may not represent the temperature experienced by the
occupants.
▼ TCB-PCNT30TLE2 TCC Link Connection Interface
The electrical box in the DX Air Curtain can accommodate this option accessory.
▼ MMD-ODH1 VRF System Interface (Factory Fitted)
Communications interface for indoor air curtain unit to connect to VRF outdoor unit.
RBC-AMT32E RBC-AMS41E RBC-AMS54E RBC-AS41E TCB-EXS21TLE TCB-AX32E2