REMKO KWT Series User manual

Operating and
installation instructions
Read the instructions prior to performing any task!
REMKO series KWT
KWT 240 DC
Monobloc air conditioners
0212-2019-10 Edition 3, en_GB
Wall-mounted units for cooling and heating

R410A
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............................................................................................................. 4
1.1 General safety notes....................................................................................................................... 4
1.2 Identification of notes...................................................................................................................... 4
1.3 Personnel qualifications.................................................................................................................. 4
1.4 Dangers of failure to observe the safety notes................................................................................ 4
1.5 Safety-conscious working............................................................................................................... 4
1.6 Safety notes for the operator........................................................................................................... 5
1.7 Safety notes for installation, maintenance and inspection.............................................................. 5
1.8 Unauthorised modification and changes......................................................................................... 5
1.9 Intended use................................................................................................................................... 5
1.10 Warranty........................................................................................................................................ 5
1.11 Transport and packaging............................................................................................................... 6
1.12 Environmental protection and recycling........................................................................................ 6
2 Technical data........................................................................................................................................ 7
2.1 Unit data.......................................................................................................................................... 7
2.2 Unit dimensions............................................................................................................................... 8
2.3 Scope of delivery............................................................................................................................. 8
3 Design and function.............................................................................................................................. 9
3.1 Unit description............................................................................................................................... 9
4 Operation............................................................................................................................................. 10
5Assembly and installation.................................................................................................................. 13
5.1 Important notes prior to installation............................................................................................... 13
5.2 Minimum clearances..................................................................................................................... 13
5.3 Installation materials..................................................................................................................... 13
5.4 Installation..................................................................................................................................... 14
5.5 Condensate removal..................................................................................................................... 17
6 Electrical wiring................................................................................................................................... 18
7 Commissioning................................................................................................................................... 19
8 Troubleshooting and customer service............................................................................................ 20
9 Care and maintenance........................................................................................................................ 22
10 Shutdown............................................................................................................................................. 24
11 Exploded view of the unit and spare parts list................................................................................. 25
11.1 Exploded view of the unit............................................................................................................ 25
11.2 Spare parts list............................................................................................................................ 26
12 Index..................................................................................................................................................... 31
3

1 Safety and
usage instructions
1.1 General safety notes
Carefully read the operating manual before com-
missioning the units for the first time. It contains
useful tips and notes such as hazard warnings to
prevent personal injury and material damage.
Failure to follow the directions in this manual not
only presents a danger to people, the environment
and the system itself, but will void any claims for
liability.
Keep this operating manual and the refrigerant
data sheet near to the units.
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.
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.
REMKO series KWT
4

1.6 Safety notes 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 (grille) 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 certain unit parts or components
may lead to burns or injury.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperature.
nSpaces in which refrigerant can leak sufficient
to load and vent. Otherwise there is danger of
suffocation.
nAll housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects, fluids or gases.
nThe units must be inspected by a service tech-
nician at least once annually. Visual inspec-
tions 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
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.
nLocal regulations and laws such as 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.
nMobile units must be set up securely on suit-
able surfaces and in an upright position. Sta-
tionary units must be permanently installed for
operation.
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 must not be altered or
bypassed.
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.
5

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!
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 series KWT
6

2 Technical data
2.1 Unit data
Series KWT 240 DC
Operating mode Local, two-hose air conditioner with
inverter technology for cooling and heating
Nominal cooling output 1) kW 2.35 (0.92-3.10)
Energy efficiency ratio - cooling A+
Energy efficiency rating EER 1) 3.22
Energy consumption, hourly kWh/60
min 0.73
Nominal heating 1) kW 2.36 (1.10-2.67)
Energy efficiency ratio - heating A
Energy efficiency rating COP 1) 3.28
Energy consumption, hourly kWh/60
min 0.72
Dehumidification capacity l/h 1.1
Application area (room volume), approx. m380
Setting range for °C 16-31
Operating range, cooling °C/r.H.% -5 to +43/35-65
Operating range, heating °C/r.H.% -10 to +24/35-65
Refrigerant 3) R410A
Refrigerant, basic quantity kg 0.56
CO2 equivalent t 1.69
Max. operating pressure bar 38
Air flow volume per stage m3/h 270/320/400
Sound pressure level min/max 2) dB(A) 27/41
Sound power level max. dB(A) 58
Power supply V/Ph/Hz 230/1~/50
Enclosure class IPX0
Max. power consumption W 1060
Max. current consumption A 4.8
Connection diameter pipe channel mm 160
Max. pipe channel length m 1
7

Series KWT 240 DC
Dimensions - height mm 555
Dimensions - width mm 1030
Dimensions - depth mm 170
Weight kg 49
EDP no. 1609240
1) Per EN 14511
2) Per EN 12102
3) Contains greenhouse gas per Kyoto protocol (GWP 2088)
2.2 Unit dimensions
1030
555
1030 170
170
Fig. 1: Unit dimensions KWT 240 DC (All measurements in mm)
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
2.3 Scope of delivery
A
2
1
4
3
5
6
1: Air duct outside panels (2 pcs.)
2: Air duct internal spigots (2 pcs.)
3: IR remote control
4: Plastic sheet (2 pcs.)
5: Wall-mounted bracket
6: Mounting template
REMKO series KWT
8

3 Design and function
3.1 Unit description
The local room air conditioner consists of a com-
pact housing and 2 exhaust air ducts to remove or
supply heat.
The condenser built into the unit is used to pass
the heat removed from the room to the outside air
when in cooling mode. In heating mode, the heat
received via the evaporator is released into the air
in the room to be heated via the condenser. In both
operating modes, the compressor adjusts its power
exactly to the requirements and thereby regulates
the setpoint temperature with minimal temperature
fluctuations. Thanks to this inverter technology
energy is saved compared to conventional room
air conditioners and the noise emissions are
reduced to a particularly low level.
The air conditioner is designed to be located
indoors near the bottom of the wall. It is operated
by an infrared remote control or via the integrated
touch display.
The air conditioner consists of a compressor, evap-
orator and condenser in a lamella design, evapo-
rator and condenser fans as well as the controller
and condensate tray.
A
B
C
D
E
Fig. 2: Unit function
A: Inside air inlet
B: Inside air outlet
C: Outside air inlet
D: Outside air outlet
E: Condensate drain
9

4 Operation
The system can be operated by means of the
touch panel on the unit or via the infrared remote
controller. The functional operation is identical.
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.
A
max. 6 m
Fig. 3: 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.
The infrared remote control is operated via a
button battery of type CR2430. Replacement is
carried out at the rear of the remote control. Turn
the cover counter-clockwise with a flat object (e.g.
a coin) to open. Then, the old button battery can
be removed and the new button battery inserted
with the positive terminal facing upwards. Ensure
that only button batteries of type CR2430 (3V) are
used when replacing.
Fig. 4: Changing the battery
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!
REMKO series KWT
10

Keys and displays of the operating unit and their functions
The system can be operated by means of the touch panel on the unit or via the standard infrared remote
controller. The functional operation of the keys are identical.
2
1
6
4
14
11
5
7
3
12
13
10
7
A
A
9
8
3 6 11 1
253 8 4 9 10
Fig. 5: Keys on the remote control
1
" ” - on/off key
Press this key to operate the unit.
2
" " key - "Cooling" mode
Hold down this key to activate cooling mode.
3
" " and " " keys - Temperature setting
Using these keys, the set temperature can be
increased or lowered in 1 °C steps between 16 and
31 °C.
4
" " key - Fan speed
Operating this key adjusts the fan speed in the fol-
lowing steps:
“ ” symbol - low
Low fan speed
“” symbol - medium
Medium fan speed
“ ” symbol - high
High fan speed
“ (flashing)” symbol - boost:
The boost function provides a 30 minute perform-
ance increase for quick cooling or heating.
“ (sliding)” symbol - automatic:
Automatic speed adjustment to meet required per-
formance.
Adjusting the fan speed is possible in cooling,
heating and recirculation mode.
5
" " key - Dehumidifying
Dehumidifying mode is activated by holding down
this key. In this mode, the temperature and fan
speed cannot be adjusted.
6
"A" key - Automatic
Automatic mode is activated by holding down this
key. In this mode, the unit switches automatically
between the cooling and heating operating modes
based on the room temperature and the setpoint
which has been selected. The fan speed is also
controlled by the unit.
7
" " key - "Heating" mode
Heating mode is activated by holding down this
key.
11

8
" " key - "Recirculation" mode
Recirculation mode is activated by holding down
this key.
9
" " key - Night mode
Night mode is activated by pressing this key.
Cooling mode:
The temperature set is increased by 1 °C after 1
hour and a further degree after 2 hours. After the
second hour, the temperature no longer changes
and after a further 6 hours the unit goes into
standby mode.
Heating mode:
The temperature set is lowered by 1 °C after 1
hour and a further degree after 2 hours. After the
second hour, the temperature no longer changes
and after a further 6 hours the unit goes into
standby mode.
The function can be deactivated again by pressing
the key again.
10
“ ” key - Swing function
Pressing this key activates the Swing function. The
discharge fin can be oscillated and locked to the
desired position by pressing the key again.
11
" " key - Timer-
It is possible to activate the timer function using
this key.
By pressing this key with the unit deactivated, it is
possible to automatically start the unit after the
time set.
It is also possible with the unit active to automati-
cally stop the unit after the time set using this key.
The time can be adjusted with the arrow keys (“ ”
and “ ”) in a range of 1 to 24 hours.
After the desired time has been set, the input can
be confirmed by pressing the timer key again.
If the timer key is held down for 3 seconds, key
lock is activated. All inputs by the user are pre-
vented with key lock active. Key lock can be deac-
tivated by holding down the timer key again for 3
seconds.
12
" " key - Hotel mode
Hotel mode limits the adjustment range in cooling
mode from 22 °C to 28 °C and in heating mode
from 16 °C to 24 °C. The automatic function is also
deactivated.
After holding the key down for 10 seconds, hotel
mode can be activated (En) or deactivated (dS)
with a quick press. The display returns after 5 sec-
onds and stores the settings.
A quick press of the key on the base screen does
nothing.
13
Digital display
The current set temperature is displayed in normal
operation on the digital display. The display is also
used for further function settings and for displaying
error codes in the event of a fault.
14
Graphical temperature display
The graphical temperature display shows the
approximate ambient temperature using 7 bars
and lights up either red (heating) or blue (cooling)
in the respective operating mode. The temperature
display also makes a sliding motion when boost
mode is active.
REMKO series KWT
12

5 Assembly and
installation
5.1 Important notes
prior to installation
When installing the unit, observe the following
points:
nThe installation must be carried out on a flat
wall
nEnsure that the wall meets the static require-
ments (consider the weight of the device as
well as the required holes to be drilled)
nEnsure that the minimum clearances are
observed to allow trouble-free maintenance
and/or servicing
nEnsure that no water pipes, power cables or
similar are inside the wall of the installation
area as they could be damaged by drilling
holes
nEnsure that there are no adjacent objects
which may obstruct the air circulation
nDo not install the unit in close proximity to or
above heat sources or electrical devices
nBy correctly placing the unit, ensure that the air
stream is not directly aimed at people
nA mains socket suitable for a plug with protec-
tive contact, must be provided in the vicinity of
the system
5.2 Minimum clearances
Observe the minimum clearances to allow access
for maintenance and repair work and facilitate
optimum air distribution.
A
B
D
C
Fig. 6: Minimum clearances
KWT 240 DC (all measurements in mm)
A 60
B 120
C 60
D 50
Observe minimum clearances even outside and
ensure that vegetation and plants also keep to the
minimum distances. Heavy contamination of the
condenser and increased maintenance costs must
be expected if there are leaves or needles in the
vicinity of the ventilation ducts.
Furthermore, depending on the region, ensure that
the ventilation ducts are not blocked with snow to
prevent the entry of snow into the unit or limitation
of the air flow.
> 800 mm
Fig. 7: Minimum clearances
5.3 Installation materials
The unit must be fastened to a suitable wall using
the wall bracket with sufficient screws. Only use
suitable fastening materials for your application
case.
13

5.4 Installation
Perform the installation as follows:
1. Cut the required holes out of the mounting
template.
2. Fasten the mounting template to the wall.
Ensure that this is level.
3. Mark the required core holes, the fastening
points for the mounting rails and the holes for
the condensate drain and the lift protection
bracket.
A
A: Inside
4. Remove the mounting template.
5. Using a corresponding core drill machine,
drill two 162 mm diameter holes in the wall
for the air supply and exhaust air (the pilot
hole should be 5-10 mm. Use an incline of
approx. 3% to prevent the penetration of
water from outside.
A
A: Inside
6. Drill the remaining holes for the condensate
drain (min. 18 mm), the wall bracket and the
lift protection bracket. The condensate drain
must have an incline of at least 3 %.
7. Insert the supplied plastic sheets into the drill
holes and cut off the excess material so that
the plastic sheets on the outside are 5 mm
shorter than the wall thickness. Ensure that
the junction line points upwards. Then insert
the condensate hose into the hole provided.
NOTICE!
If heating mode must be used, it is recom-
mended to insulate the plastic sheets
from outside to prevent condensation in
the wall.
5 mm
A
A: Inside
REMKO series KWT
14

8. Install the wall bracket with sufficient screws
to guarantee a secure hold.
A
A: Inside
9. Fold the outside panels together and insert
them through the drill hole. Align the panel
and place the inside panel. If necessary, the
inside panel can also be screwed to the
inside wall. Tighten the chain of the outside
panel and hook it into the inside panel at the
desired length. Cut off the excess length of
the chain. Repeat the process for the second
drill hole. The outside panels are equipped
with non-return flap valves. Pay attention to
the direction of the air flow when installing
(see fig. below).
A
BB
A: Outside wall
B: Inside wall
10. Suspend the unit on the wall-mounted
bracket and check the alignment of the unit.
Pay attention to the connection of the con-
densate hose and to the electrical power
supply. Fasten the lift protection bracket to
the wall beneath the unit.
A
A: Inside
11. Loosen and remove the wing nuts on the
underside of the unit to remove the transport
lock.
15

Mounting template
80
47 404
293 68
197
16
11
64 64
57
190
A
B
C
D
E
A: Area for the electrical connection
B: Holes for the air inlet and outlet
C: Holes for the anchors
D: Hole for the condensate drainage connection
E: Hole for the lift protection bracket
REMKO series KWT
16

5.5 Condensate removal
In cooling mode:
The unit is equipped with automatic drainage of the
condensate water that arises while in cooling
mode. For this purpose, the water that arises is
collected in the condensate tray of the unit and dis-
persed by a pump on the condenser. Here, it evap-
orates and is fed outside with the aid of the
exhaust air.
If the unit is operated for a prolonged period of
time, or if it is operated at a very high outdoor air
humidity, it is possible that the quantity of conden-
sate water that arises is greater than the quantity
that can be evaporated. In this case, the unit
switches off via the integrated liquid level switch
and “OF” appears on the display.
NOTICE!
It is recommended to provide continuous con-
densate drainage even for cooling mode.
Beneath the unit there is a condensate drainage
connection for the permanent condensate drainage
connection and a T-piece with a closed emergency
drainage nozzle. Both connections are sealed at
the factory with a rubber stopper.
NOTICE!
In heating mode, automatic discharge through
evaporation is not possible and a permanent
condensate drain is absolutely necessary.
Emergency drainage
Hold a container (with a min. container capacity of
3 litres) beneath the unit and open the emergency
drainage to discharge. Then close off the emer-
gency drainage nozzle with the rubber stopper.
2
1
Fig. 8: Condensate removal
1: Emergency drainage nozzle
2: Connection for permanent discharge (13 mm)
17

6 Electrical wiring
Electrical drawings
UV
W
N PE L
CN4
CN2 CN5
CN8
CN6
CN7
CN2
COM-
CON
CN3
COMM-DRV
U
V
W
CN10 CN14
CN5
XP103
CN7
XP102
XP107
XP212
XP209
CN7
Cn6
CN9
CN11
CN12
CN18
CN15 CN17
CN16
CN14
CN13
CN10
CN8
CN4
CN3
CN2
CN1
MMM
M
M
CN9
NO COM
1
18
0-10V
19
89 10 11 12
13
14
15
16
A17
3
2
4
56 7
A
B
C
Fig. 9: Electrical drawings
A: Power PCB
B: Control board
C: Inverter board
1: Mains power supply cable
2: Reactor coil
3: Compressor
4: Compressor outlet temperature probe
5: Condensate pump
6: Thermo-actuator
7: 4-way valve
8: Expansion valve actuator
9: Fin positioning motor
10: External contact on/off
11: Condensate pump liquid level switch
12: Liquid level switch alarm/off
13: Condenser temperature probe
14: Outside air inlet temperature probe
15: Temperature probe, evaporator
16: Inside air inlet temperature probe
17: Touch display
18: Condenser fan motor
19: Evaporator fan motor
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process
REMKO series KWT
18

7 Commissioning
Before every commissioning the air inlet and outlet
openings should be checked for foreign bodies and
the air inlet filter must be checked for dirt. Blocked
or soiled grills and filters must be cleaned immedi-
ately, see "Care and maintenance" chapter.
Before starting up, ensure that the power supply is
present.
Cooling mode
1. Use the " " key to switch the unit on.
2. Select cooling mode with the " " key.
3. Set the desired room temperature with the
" and " keys.
4. Select the desired fan speed using the " "
key.
Heating mode
1. Use the " " key to switch the unit on.
2. Select heating mode with the " " key.
3. Set the desired room temperature with the
" and " keys.
4. Select the desired fan speed using the " "
key.
Automatic operating mode
1. Use the " " key to switch the unit on.
2. Select automatic mode with the "A" key.
3. Set the desired room temperature with the
" and " keys.
The fan speed is selected automatically by the
unit.
Dehumidifying mode
1. Use the " " key to switch the unit on.
2. Select Dehumidifying mode with the " " key.
The fan speed and temperature are selected auto-
matically by the unit.
19

8 Troubleshooting and customer service
The unit has been manufactured using state-of-the-art production methods and has been tested several
times to ensure that it works properly. If malfunctions should occur, please check the unit as detailed in the
list below. Please inform your dealer if the unit is still not working correctly after all the function checks have
been performed.
Error description Cause Remedial measures
The unit cannot be switched on
No power supply Check the power supply
The batteries in the remote control
are empty.Replace the batteries
The unit does not start or switches
itself off.
Power supply interrupted. Check power supply.
Operational temperature range
too low/exceeded.
Observe operational temperature
range 18 to 35 °C.
The unit does not work or works at
reduced cooling capacity.
Exhaust duct is blocked or longer
than 1 metres.
Ensure that there is a clear path
for the exhaust air. Shorten the
exhaust duct.
Filter contamination, inlet and/or
outlet blower openings blocked by
foreign objects.
Clean filter.
Minimum clearances too small. Observe minimum clearances.
Windows and doors open/heat
load was increased.
Close doors and windows/reduce
heat load.
"Cooling" operating mode is not
selected. Select the correct operating mode.
The unit does not respond to the
infra-red remote control.
Batteries in the remote control are
empty or the distance to the
receiver is too great.
Insert new batteries/reduce dis-
tance.
After battery exchange, incorrect
polarity of batteries.
Insert the batteries with the cor-
rect polarity. Observe marking.
The touch display does not
respond to inputs. Key lock activated. Deactivate key lock. (See chapter “Operation”)
Condensate discharge on unit.
Unit is not level. Adjust the unit so it is level
The stopper for the condensate
drain or the emergency discharge
is not correctly inserted or is dam-
aged
Insert stopper correctly or replace
if necessary.
REMKO series KWT
20