REMKO RXT Series User manual

Operating and
installation instructions
Read the instructions prior to performing any task!
REMKO RXT series
RXT 525 DC, RXT 685 DC, RXT 1055 DC, RXT 1405 DC
Wall and ceiling chests for cooling and heating
0217-2021-07 Edition 2, en_GB

R32
Refrigerant
Translation of the original
Read these operating instructions carefully before commis-
sioning / using this device!
These instructions are an integral part of the system and must
always be kept near or on the device.
Subject to modifications; No liability accepted for errors or mis-
prints!

Table of contents
1 Safety and usage instructions............................................................................................................. 5
1.1 General safety notes....................................................................................................................... 5
1.2 Identification of notes...................................................................................................................... 5
1.3 Personnel qualifications.................................................................................................................. 5
1.4 Dangers of failure to observe the safety notes................................................................................ 5
1.5 Safety-conscious working............................................................................................................... 6
1.6 Safety instructions for the operator................................................................................................. 6
1.7 Safety notes for installation, maintenance and inspection ............................................................. 6
1.8 Unauthorised modification and changes......................................................................................... 7
1.9 Intended use................................................................................................................................... 7
1.10 Warranty........................................................................................................................................ 7
1.11 Transport and packaging............................................................................................................... 7
1.12 Environmental protection and recycling........................................................................................ 8
2 Technical data........................................................................................................................................ 9
2.1 Unit data.......................................................................................................................................... 9
2.2 Unit dimensions ............................................................................................................................ 12
3 Design and function............................................................................................................................ 13
3.1 Unit description............................................................................................................................. 13
4 Operation............................................................................................................................................. 14
4.1 General notes................................................................................................................................ 14
4.2 Display on indoor unit.................................................................................................................... 15
4.3 Keys on the remote control........................................................................................................... 16
5 Installation instructions for qualified personnel.............................................................................. 24
5.1 Important notes prior to installation............................................................................................... 24
5.2 Selection of installation location ................................................................................................... 24
5.3 Installation materials..................................................................................................................... 25
5.4 Wall openings................................................................................................................................ 26
5.5 Fastening options for the indoor unit............................................................................................. 27
5.6 Minimum clearances..................................................................................................................... 29
5.7 Connection variants...................................................................................................................... 29
5.8 Oil return measures....................................................................................................................... 29
6 Installation........................................................................................................................................... 30
6.1 Preparations for installation........................................................................................................... 30
6.2 Installation of the indoor unit......................................................................................................... 30
6.3 Connection of refrigerant piping.................................................................................................... 30
6.4 Additional notes on connecting the refrigerant piping................................................................... 32
6.5 Leak testing................................................................................................................................... 33
6.6 Adding refrigerant.......................................................................................................................... 33
7 Condensate drainage connection and safe drainage...................................................................... 34
8Electrical wiring................................................................................................................................... 36
8.1 General notes................................................................................................................................ 36
8.2 Connecting the indoor unit............................................................................................................ 36
8.3 Outdoor unit connection................................................................................................................ 37
8.4 Electrical wiring diagram............................................................................................................... 37
8.5 Electrical drawings........................................................................................................................ 39
9 Before commissioning....................................................................................................................... 43
3

10 Commissioning................................................................................................................................... 43
11 Shut-down............................................................................................................................................ 44
12 Troubleshooting, customer service and fault analysis................................................................... 45
12.1 Troubleshooting and customer service....................................................................................... 45
12.2 Indoor unit fault analysis............................................................................................................. 48
12.3 Resistances of the temperature probes...................................................................................... 59
13 Care and maintenance........................................................................................................................ 62
14 Exploded view and spare parts lists................................................................................................. 64
14.1 Exploded view - Indoor unit RXT 525-685 DC ........................................................................... 64
14.2 Spare parts list - Indoor unit RXT 525-685 DC........................................................................... 65
14.3 Exploded view - Indoor unit RXT 1055-1405 DC ....................................................................... 66
14.4 Spare parts list - Indoor unit RXT 1055-1405 DC....................................................................... 67
14.5 Exploded view - Outdoor unit RXT 525 DC ................................................................................ 68
14.6 Spare parts list - Outdoor unit RXT 525 DC................................................................................ 69
14.7 Exploded view - Outdoor unit RXT 685 DC ................................................................................ 70
14.8 Spare parts list - Outdoor unit RXT 685 DC................................................................................ 71
14.9 Exploded view - Outdoor unit RXT 1055 DC .............................................................................. 72
14.10 Spare parts list - Outdoor unit RXT 1055 DC............................................................................ 73
14.11 Exploded view - Outdoor unit RXT 1405 DC ............................................................................ 74
14.12 Spare parts list - Outdoor unit RXT 1405 DC............................................................................ 75
15 Index..................................................................................................................................................... 76
REMKO RXT series
4

1 Safety and
usage instructions
1.1 General safety notes
Carefully read the operating manual before com-
missioning the units or their components for the
first time. It provides useful tips and notes such as
hazard warnings to prevent injury and material
damage. Failure to follow the directions in this
manual can endanger persons, the environment
and the equipment itself or its components and will
void any claims for liability.
Store this manual and the information required for
the operation of this system (e.g. refrigerant data-
sheet) in the vicinity of the unit.
The refrigerant used in the system is flammable. If
applicable, observe the local safety conditions.
Warning of inflammable substances!
1.2 Identification of notes
This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.
Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.
Safety notes in this manual are indicated by sym-
bols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.
DANGER!
Contact with live parts poses an immediate
danger of death due to electric shock. Damage
to the insulation or individual components may
pose a danger of death.
DANGER!
This combination of symbol and signal word
warns of a situation in which there is immediate
danger, which if not avoided may be fatal or
cause serious injury.
WARNING!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury.
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or mate-
rial and environmental damage.
NOTICE!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause material and
environmental damage.
This symbol highlights useful tips and recom-
mendations as well as information for efficient
and fault-free operation.
1.3 Personnel qualifications
Personnel responsible for commissioning, opera-
tion, maintenance, inspection and installation must
be able to demonstrate that they hold a qualifica-
tion which proves their ability to undertake the
work.
1.4 Dangers of failure to observe
the safety notes
Failure to observe the safety notes may pose a risk
to people, the environment and the units. Failure to
observe the safety notes may void any claims for
damages.
5

In particular, failure to observe the safety notes
may pose the following risks:
nThe failure of important unit functions.
nThe failure of prescribed methods of mainte-
nance and repair.
nDanger to people on account of electrical and
mechanical effects.
1.5 Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
1.6 Safety instructions
for the operator
The operational safety of the units and compo-
nents is only assured providing they are used as
intended and in a fully assembled state.
nThe units and components may only be set up,
installed and maintained by qualified per-
sonnel.
nProtective covers (grills) over moving parts
must not be removed from units that are in
operation.
nDo not operate units or components with
obvious defects or signs of damage.
nContact with equipment parts or components
can lead to burns or injury.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.
nRooms in which refrigerant may escape shall
be adequately aerated and ventilated. Other-
wise, a risk of suffocation or fire exists.
nDo not leave children unsupervised when close
to the system.
nCommissioning must be performed by author-
ised specialists exclusively. Deficient commis-
sioning may lead to water leaks, electric
shocks or fire. Commissioning must take place
as described in the user manual.
nOnly instruct authorised specialist personnel to
perform maintenance or servicing.
nThe system is filled with a flammable refrig-
erant. Never thaw any frozen unit components
independently!
nDo not operate any further devices that pro-
duce high heat or naked flames in the same
room.
nAll housing parts and unit openings, e.g. air
inlets and outlets, must be kept clear.
nThe units must be inspected by a service tech-
nician to ensure that they are safe to use and
fully functional at least once yearly. Visual
inspections and cleaning may be performed by
the operator when the units are disconnected
from the mains.
1.7 Safety notes for installation,
maintenance and inspection
nThe refrigerant R32 used in the system is flam-
mable. If applicable, observe the local safety
conditions.
nKeep the cooling circuit clear of other gases
and foreign substances. Only fill the cooling cir-
cuit with the refrigerant R32.
nOnly use the accessories, components and
appropriately marked parts provided. The use
of non-standardised components may result in
water leaks, electric shocks and fire.
nOnly install and store the units in rooms larger
than 4 m2. With a failure to comply, leaks may
result in the room filling with a flammable mix-
ture!
The minimum room size of 4 m2 required for
installation and storage pertains to the basic fill
quantity of the unit. This varies according to the
installation type and total fill quantity of the
system. The calculation must take place in
accordance with valid DIN standards. Make
sure that the installation site is suitable for safe
unit operation.
nOnly mount the unit components on structurally
suitable brickwork.
nThe units must not be installed in rooms in
which further devices that produce heat are
operated (heaters, open hearths).
nMake sure the installation room is sufficiently
ventilated.
nInterventions in the cooling circuit are only pos-
sible after completely draining the refrigerant.
Never solder or grind unit components!
nNote that refrigerant may be odourless.
nNever operate the air conditioning unit in a
humid room, such as a bathroom or laundry
room. If the humidity is too high, this can cause
short circuits on electrical parts.
nThe product must be correctly earthed at all
times, otherwise it may induce electric shocks.
nAttach the condensate drain as described in
the operating manual. The inadequate
drainage of condensate can lead to water
damage in your apartment.
nAll persons who intervene in the cooling circuit
must hold a valid certificate from the chamber
of industry and commerce, which confirms their
ability to work with refrigerant.
REMKO RXT series
6

nAppropriate hazard prevention measures must
be taken to prevent risks to people when per-
forming installation, repair, maintenance or
cleaning work on the units.
nThe setup, connection and operation of the
units and its components must be undertaken
in accordance with the usage and operating
conditions stipulated in this manual and comply
with all applicable regional regulations.
nRegional regulations and laws as well as the
Water Ecology Act must be observed.
nThe power supply should be adapted to the
requirements of the units.
nUnits may only be mounted at the points pro-
vided for this purpose at the factory. The units
may only be secured or mounted on stable
structures, walls or floors.
nThe units and components should not be oper-
ated in areas where there is a heightened risk
of damage. Observe the minimum clearances.
nThe units and components must be kept at an
adequate distance from flammable, explosive,
combustible, abrasive and dirty areas or
atmospheres.
nSafety devices may not be modified or
bypassed.
nThe connection of the indoor unit must be
established as a permanent connection; a
detachable, reusable connection is not permis-
sible.
1.8 Unauthorised modification
and changes
Modifications or changes to units and components
are not permitted and may cause malfunctions.
Safety devices may not be modified or bypassed.
Original replacement parts and accessories
authorised by the manufactured ensure safety. The
use of other parts may invalidate liability for
resulting consequences.
1.9 Intended use
Depending on the model, the units and the addi-
tional fittings with which they are equipped are only
intended to be used as an air-conditioner for the
purpose of cooling or heating the air in an
enclosed space.
Any different or additional use is a non-intended
use. The manufacturer/supplier assumes no lia-
bility for damages arising from a non-intended use.
The user bears the sole risk in such cases.
Intended use also includes working in accordance
with the operating and installation instructions and
complying with the maintenance requirements.
The threshold values specified in the technical
data must not be exceeded.
1.10 Warranty
For warranty claims to be considered, it is essential
that the ordering party or its representative com-
plete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.
The warranty conditions are detailed in the "Gen-
eral business and delivery conditions". Further-
more, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
1.11 Transport and packaging
The devices are supplied in a sturdy shipping con-
tainer. Please check the equipment immediately
upon delivery and note any damage or missing
parts on the delivery and inform the shipper and
your contractual partner. For later complaints can
not be guaranteed.
WARNING!
Plastic films and bags etc. are dangerous
toys for children!
Why:
- Leave packaging material are not around.
- Packaging material may not be accessible to
children!
7

1.12 Environmental protection
and recycling
Disposal of packaging
All products are packed for transport in environ-
mentally friendly materials. Make a valuable contri-
bution to reducing waste and sustaining raw mate-
rials. Only dispose of packaging at approved
collection points.
Disposal of equipment and components
Only recyclable materials are used in the manufac-
ture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not dis-
posed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner, e.g. using certified firms and recy-
cling specialists or at collection points.
REMKO RXT series
8

2 Technical data
2.1 Unit data
Series RXT 525 DC RXT 685 DC RXT 1055 DC RXT 1405 DC
Operating mode Inverter wall/ceiling-mounted room air conditioner combination
for cooling and heating
Nominal cooling output 1) kW 5,30
(2,70-5,90)
7,00
(2,70-7,70)
10,60
(2,70-11,80)
14,10
(3,50-15,20)
Energy efficiency ratio SEER 1) 6,2 6,1 6,4 ---
Power consumption,
annual, QCE 3) kWh 305 413 574 ---
Energy efficiency ratio, cooling 1) A++ A++ A++ ---
Nominal heat capacity 2) kW 5,60
(2,40-6,30)
7,60
(2,70-8,30)
11,70
(2,80-12,80)
16,10
(4,10-17,0)
Energy efficiency ratio SCOP 4) 4,0 4,0 4,0 ---
Power consumption,
annual, QHE 3) kWh 1400 1925 2937 ---
Energy efficiency ratio, heating 2) A+ A+ A+ ---
Rated power consumption,
electrical cooling 1) kW 1.63 2.19 3.75 5.50
Rated elec. curr. consump.,
cooling 1) A 7.20 10.00 5.80 9.10
Rated power consumption,
electrical heating 2) kW 1.50 2.05 3.00 5.05
Rated elec. curr. consump.,
heating 2) A 6.60 9.50 4.80 8.14
Max. power consumption kW 2.95 2.95 5.60 6.20
Max. current consumption A 13.50 13.50 10.00 11.20
EDP no. 1619550 1619560 1619570 1619580
1) Air inlet temp. TK 27 °C/FK 19 °C, outside temperature TK 35 °C, FK 24 °C, max. air flow volume,
5 m pipe length
2) Air inlet temp. TK 20 °C, outside temperature TK 7 °C, FK 6 °C, max. air flow volume, 5 m pipe length
3) The specified value is based on results from standard testing.
The actual consumption depends on the use and location of the unit
4) The specified value is based on the average heating period
9

Data specific to indoor unit RXT 525 DC
IT
RXT 685 DC
IT
RXT 1055 DC
IT
RXT 1405 DC
IT
Power supply V/Ph/Hz 230/1~/50
Application area (room vol.)
approx. m3160 230 320 470
Adjustment range
room temperature °C +17 to +30
Operating range °C/
RH % +17 to +30 / 35 to 65
Air flow volume per stage m3/h 723/839/
958
853/1023/
1192
1504/1728/
1955
1600/1850/
2100
Sound pressure level
per stage 5) dB (A) 24/37/41/44 32/43/46/49 39/45/48/51 36/45/50/53
Sound power (turbo mode) dB(A) 59 65 65 65
Enclosure class IP X0
Condensate drainage
connection mm 25
Dimensions: H/W/D mm 675/1068/235 675/1650/235
Weight kg 28.0 26.8 39.0 41.2
EDP no. 1619552 1619562 1619572 1619582
5) At distance of 1 m in the open air; specified values are maximum values
REMKO RXT series
10

Data specific to outdoor unit RXT 525 DC
AT
RXT 685 DC
AT
RXT 1055 DC
AT
RXT 1405 DC
AT
Power supply V/Ph/Hz 230/1~/50 400/3~/50
Operating range, cooling °C +5 to +50 7)
Operating range, heating °C +5 to +24 7)
Air flow rate, max. m3/h 2000 2700 4000 7500
Enclosure class IP 24
Sound pressure level 5) dB (A) 55 62 64 66
Sound power level max. dB (A) 63 64 68 72
Refrigerant 6) R32
Refrigerant, basic quantity kg 1.15 1.50 2.40 2.90
CO2 equivalent t 0.78 1.01 1.62 1.89
Operating pressure, max. kPa 4200/1500
Refrigerant, additional
quantity >5 m g/m 30 30 30 30
Refrigerant piping, max. length m 30 50 65 65
Refrigerant piping, max. height m 20 25 30 30
Refrigerant connection
Liquid line
Inches
(mm) 1/4 (6.35) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)
Refrigerant connection
Suction pipe
Inches
(mm) 1/2 (12.70) 5/8 (15.90) 5/8 (15.90) 5/8 (15.90)
Dimensions: H/W/D mm 554/800/333 673/962/380 810/946/410 1333/952/410
Weight kg 33,5 43,9 80,5 103,7
EDP no. 1619551 1619561 1619571 1619581
5) At distance of 1 m in the open air; specified values are maximum values
6) Contains greenhouse gas per the Kyoto protocol, GWP 675 (for further information,
see chapter "Adding refrigerant")
7) This can be extended to -15 °C with the appropriate accessory kit
11

2.2 Unit dimensions
Outdoor units
D
E
B
AC
Fig. 1: Dimensions RXT 525-1405 DC AT (all measurements in mm)
Measurements (mm) A B C D E
RXT 525 DC AT 874 511 317 554 346
RXT 685 DC AT 962 663 348 673 380
RXT 1055 DC AT 946 810 410 673 403
RXT 1405 DC AT 952 1333 410 634 404
Indoor units
B
C
A
Fig. 2: Unit dimensions, indoor unit RXT 525-1405 DC IT
Measurements (mm) A B C
RXT 525 DC IT 675 1068 235
RXT 685 DC IT 675 1068 235
RXT 1055 DC IT 675 1650 235
RXT 1405 DC IT 675 1650 235
REMKO RXT series
12

3 Design and function
3.1 Unit description
The RXT room air conditioners have a REMKO
RXT...DC AT outdoor unit as well as a RXT...DC IT
indoor unit.
In cooling mode, the outdoor unit serves to output
the heat extracted by the indoor unit from the room
being cooled. In heating mode, the heat taken up
by the outdoor unit can be discharged by the
indoor unit into the room to be heated. In both
operating modes, the output produced by the com-
pressor precisely matches requirements, and
thereby regulates the nominal temperature with
minimal temperature deviations. This "inverter
technology" results in energy savings over conven-
tional split systems and also reduces noise emis-
sions to a particularly low level. The outdoor unit
can be installed in an outdoor area or, providing
that certain requirements are met, an indoor area.
The outdoor unit consists of a cooling cycle with
compressor, fin condenser, condenser fan,
reversing valve and electronic expansion valve.
The outdoor unit is controlled by the regulation of
the indoor unit.
The indoor unit is designed both for both wall and
ceiling-mounted operation in indoor areas. It is
operated by an infrared remote control. The indoor
unit consists of a fin evaporator, evaporator fan,
controller and condensate tray.
B
A
4
3
5
6
1
2
3
7
8
9
Fig. 3: System layout RXT 525-1405 DC
A: Outdoor area / B: Indoor area
1: Indoor unit / 2: Outdoor unit
3: Condensate drainage line / 4: Condenser fan
5: Power supply / 6: Shut-off valve
7: Suction pipes / 8: Injection pipes
9: Control lines
Floor consoles, wall consoles, refrigerant piping,
wired remote controls and condensate pumps are
available as accessories.
Refrigerant piping is used to connect the indoor
unit to the outdoor unit.
1
EEV
RXT1051 DC
M
M
P S H
T1
T2
T3
TE
T5
PSL
T4
T3
T2
M3
M2
M1
PSL
PSH
T1
V1
M
M
TE
P S H
T1
T2
T3
T5
PSL
M1 M3
T4
T3
T2
M2
PSL
PSH
T1
V1
EEV
2
A B
A B
FLT
FLT
FLT
FLT
OEL
T5
T5
Fig. 4: Cooling cycle schematic
A: Outdoor area
B: Indoor area
1: RXT 525-685 DC
2: RXT 1055-1405 DC
M1: Condenser fan
M2: Compressor
M3: Evaporator fan IT
V1: Changeover valve C/H
EEV: Electr. expansion valve
FLT: Filter
OEL: Oil return line
PSH: High pressure switch AT
PSL: Low pressure switch AT
T1: Probe, evaporator IT
T2: Probe, air inlet IT
T3: Probe, condenser AT
T4: Probe, air inlet AT
T5: Probe, heat gas AT
13

4 Operation
4.1 General notes
The indoor unit is easily operated using the
standard infrared remote control. The indoor unit
beeps to acknowledge the correct transmission of
data. If it is not possible to program the indoor unit
with the remote control, then it can also be man-
ually operated.
Manual mode
The indoor unit can also be started manually. By
pressing the "Manual" key (on the display board)
multiple times, the unit can be activated with the
following functions:
The following settings apply for manual operation:
Pressing once: Automatic mode 24°C, fan speed
automatic
Pressing twice: Cooling mode, fan speed high
Pressing three times: Unit OFF
Infrared remote control
The infrared remote control sends the programmed
settings a distance of up to 6 m to the receiver of
the indoor unit. Data will only be received correctly
if the remote control is pointed at the receiver and
no objects are obstructing the transmission path.
Two AAA batteries must be inserted into the
remote control in preparation. To do so, remove
the flap from the battery compartment and insert
the batteries the correct way around (see mark-
ings).
max. 6 m
<block y.linktarget="true" y.validity.allowed="true" y.keep.together.within.page="false" ip="none" y.id="ID_79026f118af378b2c0a80aa000dde74d" y.validity.mode="positive" y.io.validity.mode="positive"><title y.commentable="true" y.id="ID_2df61a8af378b2c0a80aa0007c9fdc" y.linktarget="true" y.validity.allowed="true" y.validity.mode="positive" y.io.validity.mode="positive"><?xm-replace_text {Block title}?></title><p y.validity.allowed="true" y.commentable="true" y.id="ID_8ad17fa18af378b2c0a80aa001e35c28" y.validity.mode="positive">Das Innengerät wird komfortabel mit der serienmäßigen Infrarot-Fernbedienung bedient. Die ordnungsgemäße Datenübermittlung wird vom Innengerät mit einem Signalton quittiert. Sollte eine Programmierung über die
Infrarot-Fernbedienung nicht möglich sein, kann das Innengerät auch manuell bedient werden. Optional kann das Innengerät auch mit einer Kabelfernbedienung bedient werden.</p></block><block y.linktarget="true" y.validity.allowed="true" y.keep.together.within.page="true" ip="none" y.id="ID_adea262699646b1ac0a80aa00124eb02" y.validity.mode="positive" y.io.validity.mode="positive"><title y.commentable="true" y.id="ID_822fed5d99646b1ac0a80aa000c0eb90" y.linktarget="true" y.validity.allowed="true" y.validity.mode="positive" y.io.validity.mode="positive">Manuelle Bedienung</title><xe y.id="ID_72092e01cc69eeb1c0a80aa0001072e8"><primary y.commentable="true" y.id="ID_f2b45117cc69eeb1c0a80aa001e812b8">Manuelle Bedienung</primary></xe><p y.validity.allowed="true" y.commentable="true" y.id="ID_59dea67f99646b1ac0a80aa001a94073" y.validity.mode="positive">Die Innengeräte können manuell in Betrieb genommen werden.
Durch Betätigen der Taste "MANUAL" am Empfangsteil der Abdeckung
wird erst der Automatikmodus, dann der Kühlmodus aktiviert. Das dritte Betätigen schaltet das Gerät aus. Ein erneutes Betätigen wechselt zurück zum Automatikmodus.
Innerhalb der gesamten Anlage wird das Gerät, welches den manuell eingestellten Kühlmodus besitzt zum Führungsgerät.
Im manuellen Betrieb gelten die folgenden Einstellungen:</p><p y.validity.allowed="true" y.commentable="true" y.id="ID_3a9a283d99646b1ac0a80aa000c67f7f" y.validity.mode="positive">
Kühlbetrieb: 24 °C,
Ventilatorgeschwindigkeit: AUTO
</p><p y.validity.allowed="true" y.commentable="true" y.id="ID_3d36471699646b1ac0a80aa001dc8c12" y.validity.mode="positive">Heizbetrieb: 26 °C,
Ventilatorgeschwindigkeit: AUTO
</p><p y.validity.allowed="true" y.commentable="true" y.id="ID_bc86e04299646b1ac0a80aa000700630" y.validity.mode="positive">Durch Betätigen einer Taste der Infrarot-Fernbedienung wird der
manuelle Betrieb unterbrochen.</p><p y.validity.allowed="true" y.commentable="true" y.id="ID_960d3e6fe104f4f1c0a80aa0017e7896" y.validity.mode="positive"><b>Infrarot-Fernbedienung</b></p><xe y.id="ID_533d60fbcc69eeb1c0a80aa00124f630"><primary y.commentable="true" y.id="ID_8b358666cc69eeb1c0a80aa0019ef0e1">Infrarot-Fernbedienung</primary></xe><p y.validity.allowed="true" y.commentable="true" y.id="ID_01dbfb2899646b1ac0a80aa001c22414" y.validity.mode="positive">
Die Infrarot-Fernbedienung sendet die programmierten Einstellungen in einem Abstand von bis zu 6 m zum Empfangsteil des Innengerätes. Ein ungestörter Empfang der Daten ist nur möglich, wenn die Fernbedienung auf das Empfangsteil gerichtet und keine Gegenstände die Übertragung behindern.
</p><p y.validity.allowed="true" y.commentable="true" y.id="ID_f84708fc99646b1ac0a80aa000cea521" y.validity.mode="positive">Vorbereitend sind die im Lieferumfang bendlichen Batterien
(2 Stück, Typ AAA) in die Fernbedienung einzusetzen. Ziehen Sie dazu die Klappe des Batteriefachs ab und setzen die Batterien polungsrichtig ein (siehe Markierung).</p></block><block y.linktarget="true" y.validity.allowed="true" ip="none" y.id="ID_9cb8e18699646b1ac0a80aa000a63989" y.keep.together.within.page="false" y.validity.mode="positive" y.io.validity.mode="positive"><gure size="margin" y.linktarget="true" y.validity.allowed="true" y.commentable="true" ip="none" y.id="ID_b1c62b99ea33cfc0a80aa00177114f" y.validity.mode="positive"><img y.io.id="a7ef1e92cc0463e3c0a80aa00099319e" y.io.version="1" y.io.language="--" y.io.variant="--" y.io.name="COS-FB-Maximaler-Abstand" y.io.format="PNG72" y.reftype="bild" y.ref.io.types="me-imggif, me-imgjpeg, me-imgpng, me-imgsvg, me-imgti, me-imgpdf, me-imgeps, me-imgdes" y.io.validity.mode="positive" y.validity.mode="positive" yhref="https://xml24.kothes.de:443/cmsweb/view/a7ef1e92cc0463e3c0a80aa00099319e/1/--/--/PNG72/previewtrue/745" y.io.owner="pschimczik" y.io.status="Approved"/><subtitle y.commentable="true" y.id="ID_45b64fd899ea33cfc0a80aa000118fa1">Maximaler Abstand</subtitle></gure></block><block y.linktarget="true" y.validity.allowed="true" y.keep.together.within.page="false" ip="none" y.id="ID_9303000c99ea33cfc0a80aa000ec972a" y.validity.mode="positive" y.io.validity.mode="positive"><note-ref y.io.id="c3fcca3999e7c4d7c0a80aa00075e61d" y.io.version="1" y.io.language="de" y.io.variant="DE" y.io.name="Störungen werden codiert angezeigt" y.reftype="text" y.validity.allowed="true" y.id="ID_cc37889a99ea33cfc0a80aa000b86398" y.ref.io.types="me-note" y.validity.mode="positive"><note y.validity.allowed="true" y.id="ID_6aafc54d99e7c4d7c0a80aa001a18c" y.io.id="c3fcca3999e7c4d7c0a80aa00075e61d" y.io.version="1" y.io.language="de" y.io.variant="DE" y.io.format="" y.commentable="true" y.validity.mode="positive" y.io.validity.mode="positive" y.io.owner="pschimczik" y.io.status="Approved"><title y.commentable="true" y.id="ID_cab1857499e7c4d7c0a80aa001c6fcb0" y.linktarget="true" y.validity.allowed="true" y.validity.mode="positive" y.io.validity.mode="positive"><?xm-replace_text {Note title}?></title><p y.validity.allowed="true" y.commentable="true" y.id="ID_5f147d5399e7c4d7c0a80aa000f79d44" y.validity.mode="positive">Störungen werden codiert
angezeigt
(siehe Kapitel Störungsbeseitigung und Kundendienst).
</p></note></note-ref></block><block y.linktarget="true" y.validity.allowed="true" y.keep.together.within.page="false" ip="none" y.id="ID_4889bf3299ea33cfc0a80aa00192ab32" y.validity.mode="positive" y.io.validity.mode="positive"><notice-ref y.io.id="6ef454f799e959f5c0a80aa0017cf664" y.io.version="1" y.io.language="de" y.io.variant="DE" y.io.name="Entladene Batterien ersetzen" y.reftype="text" y.validity.allowed="true" y.id="ID_c3b85e1999ea33cfc0a80aa000257b18" y.ref.io.types="me-notice" y.validity.mode="positive"><notice y.validity.allowed="true" y.id="ID_12c4b32999e959f5c0a80aa001b1843f" y.io.id="6ef454f799e959f5c0a80aa0017cf664" y.io.version="1" y.io.language="de" y.io.variant="DE" y.io.format="" y.commentable="true" y.validity.mode="positive" y.io.validity.mode="positive" y.io.owner="pschimczik" y.io.status="Approved"><title y.commentable="true" y.id="ID_0a56f35d99e959f5c0a80aa0016164c4" y.linktarget="true" y.validity.allowed="true" y.validity.mode="positive" y.io.validity.mode="positive"><?xm-replace_text {Notice title}?></title><p y.validity.allowed="true" y.commentable="true" y.id="ID_5d6f9c5699e959f5c0a80aa0011e84" y.validity.mode="positive">Ersetzen Sie entladene Batterien sofort durch einen neuen Satz, da sonst die Gefahr des Auslaufens besteht. Bei längeren Außerbetriebnahmen empehlt es sich die Batterien zu entfernen.</p></notice></notice-ref></block><block y.linktarget="true" y.validity.allowed="true" y.keep.together.within.page="false" ip="none" y.id="ID_3fa8dc8f7c8aeaedc0a80aa001a42c28" y.validity.mode="positive" y.io.validity.mode="positive"><note-ref y.io.id="bd677a507c893df9c0a80aa0006b7af7" y.io.version="1" y.io.language="de" y.io.variant="DE" y.io.name="Energie sparen mittels Stand-by-Modus" y.reftype="text" y.validity.allowed="true" y.id="ID_30ae5ea47c8aeaedc0a80aa0014f3168" y.ref.io.types="me-note" y.validity.mode="positive"><note y.validity.allowed="true" y.commentable="true" y.id="ID_cb6774c17c893df9c0a80aa000def2a8" y.io.id="bd677a507c893df9c0a80aa0006b7af7" y.io.version="1" y.io.language="de" y.io.variant="DE" y.io.format="" y.validity.mode="positive" y.io.validity.mode="positive" y.io.owner="pschimczik" y.io.status="Approved"><title y.commentable="true" y.id="ID_8afa74477c893df9c0a80aa0010d2f89" y.linktarget="true" y.validity.allowed="true" y.validity.mode="positive" y.io.validity.mode="positive"><?xm-replace_text {Note title}?></title><p y.validity.allowed="true" y.commentable="true" y.id="ID_4473aa437c893df9c0a80aa000abf90b" y.validity.mode="positive">Helfen Sie mit, Energieverbräuche im Stand-By-Betrieb einzusparen! Wird das Gerät, die Anlage oder die Komponente nicht verwendet, empfehlen wir eine Unterbrechung der Spannungsversorgung.
Der Sicherheit dienende Komponenten unterliegen nicht unserer Empfehlung!</p></note></note-ref></block>
Fig. 5: Maximum distance
NOTICE!
Immediately replace flat batteries with a new
set, otherwise there is a risk of leakage. It is
recommended that the batteries are removed if
the equipment is shut down for longer periods.
REMKO RXT series
14

Wired remote control
Connection of the optional wired remote control
1. The plug for connection of a wired remote
control is located behind the panel at the dis-
play board (Fig. 6). The 5-core cable, coming
from the display panel, is marked with the
designations "A-E" (Fig. 7).
Fig. 6: Indoor unit panel
Fig. 7: Display circuit board
Alarms are indicated by a code (see chapter
Troubleshooting and customer service).
Help save on energy consumption in stand-by
mode! If the device, system or component is not
in use, we recommend disconnecting the power
supply. Components with a safety function is
excluded from our recommendation!
4.2 Display on indoor unit
Display on indoor unit
The LED indicators illuminate to indicate the set-
tings:
MANUAL TIMER
ALARM
OPERATION
DEF./FAN
1 2 3
5 6
4
7
Fig. 8: Display for setpoint/errors
1: Digital display
2: Manual operation
3: Operation display
4: Timer indicator
5: Unit for receiving signals from the remote con-
trol
6: Defrosting fan
7: Alarm indicator
15

4.3 Keys on the remote control
10
8
11
12
2
1
6
3
7
5
9
4
13
14
Fig. 9: Keys on the remote control
1
“On/Off” key
Press this key to switch the air conditioning unit on
and off.
2
“Arrow up” temperature key
Increases the setpoint in 1 °C steps up to a tem-
perature of max. 30 °C.
3
“SET” key
Makes it possible to switch between different oper-
ating functions as follows:
“Follow me” function ( )
- Network configuration ( )
- “Follow me” function ( )
The selected function flashes in the display, con-
firm with the “OK” key.
4
“Swing” key
Starts and stops the horizontal fin movement.
Press and hold the key for 2 seconds to start the
vertical fin movement (available depending on the
unit model).
5
“Fan speed” key
Allows switching between the different fan speeds
in the following order:
Automatic  Low  Medium  High
Note: To activate the silence function (available
depending on the appliance model) of the appli-
ance, press and hold the key for 2 seconds.
6
“Turbo” key
Activating the turbo function ensures that the set-
point is reached as quickly as possible.
7
“Mode” key
This key allows switching between the different
operating modes in the following order:
Automatic  Cooling  Dehumidifying  Heating
 Recirculation
8
“Sleep” key
Activates/deactivates the energy saving function of
the unit (e.g. overnight).
9
“OK” key
Required to confirm various functions of the IR
remote control.
10
“Timer” key
Activates/deactivates the time-delayed start of the
unit or the unit switch-off.
11
“Arrow down” temperature key
Decreases the setpoint in 1 °C steps down to a
temperature of min. 17 °C.
12
“Fresh” key
Activates/deactivates the REMKO BioClean func-
tion (ionisation).
REMKO RXT series
16

13
“Clean” key
Activates/deactivates the self-cleaning function of
the unit (available depending on the unit model).
14
“LED” key
Enables switching on/off the unit lighting and the
signal tones (depending on the unit).
Indicators on the LCD
1 3
25
6
7
4
8
9
10
11
12
13
14
Fig. 10: Indicators on the LCD
1
BioClean function active (available depending
on the unit type).
2
Sleep function active.
3
Follow-me function active.
4
Network configuration active.
5
Battery low (flashing).
6
Signal transmission
Lights up when a signal is sent from the IR remote
control to the air conditioning unit.
7
Time-delayed switch-on active.
8
Time-delayed switch-off active.
9
Silent mode active.
10
Fan speed
Displays the set fan speed as follows:
Low:
Medium:
High:
Automatic:
11
Mode selection
Shows the current operating mode.
12
Eco function
Lights up when the Eco function is active (available
depending on the unit).
13
Key lock
Symbol appears when the key lock is activated.
14
Temperature/Timer/Fan speed
Shows the current temperature setpoint in the
basic view. When using the additional function
“Timer”, the corresponding time values are shown.
17

Temperature setting
The temperature setting can be made within a
range of 17-30 °C. The setpoint is adjusted in 1 °C
steps.
Automatic mode
In automatic mode, the unit automatically selects
the operating mode based on the set temperature
setpoint.
1. Press the “Mode” key to activate the “Auto”
function.
2. Set the desired temperature using the “Λ ”
and “V” keys.
3. The unit can be switched on by pressing the
“ON/OFF” key.
The fan speed cannot be set in automatic
mode!
Cooling mode
1. Press the “Mode” key and activate the “Cool”
function.
2. Set the desired temperature using the “Λ ”
and “V” keys.
3. Press the “FAN” key to select the fan speed.
The following are available: Automatic, Low,
Medium and High
4. The unit can be switched on by pressing the
“ON/OFF” key.
Fig. 11: Cooling mode
REMKO RXT series
18

Timer function
With the “Timer” function, the unit can switch on
with a switch-on delay or switch off with a switch-
off delay.
Time-delayed switch-on
1. Press the “Timer” key to enter the “Time ON”
setting
2. Use the arrow keys to select the desired
number of hours after which the air condi-
tioning unit is to switch on
3. Point the remote control towards the air con-
ditioning unit and wait 1 sec. The timer is
now active (symbol in the display of the
remote control)
2
1
3
Fig. 12: Time-delayed switch-on
Time-delayed switch-off
1. Press the “Timer” key to enter the “Time
OFF” setting
2. Use the arrow keys to select the desired
number of hours after which the air condi-
tioning unit is to switch off
3. Point the remote control towards the air con-
ditioning unit and wait 1 sec. The timer is
now active (symbol in the display of the
remote control)
2
1
3
Fig. 13: Time-delayed switch-off
19

Combining time-delayed switching on and off
13.00 14.00 15.00 15.30 16.00 17.00 18.00
a
b
c
2
13
Fig. 14: Combining time-delayed switching on and off
1: Timer starts
2: Unit switches on
3: Unit switches off
a: current (13:00)
b: 2.5 hours later
c: 5 hours later
Example: If both timers are activated at 13:00, the unit switches on 2.5 hours later (at 15:30) and switches off
5 hours later (at 18:00).
“Swing” function
Press the “Swing” key
1. The horizontal air guide fin starts to rise and fall automatically. Pressing again stops the fin at the
desired position
2. On units with 3D swing function, pressing the “Swing” key for 2 seconds activates the vertical fin move-
ment
12
Fig. 15: “Swing” function
REMKO RXT series
20