REMKO ML 263 DC User manual

Assembly and operating instructions
Read the instructions prior to performing any task!
REMKO ML...DC
ML 263 DC, ML 353 DC, ML 523 DC
Inverter wall-mounted room air conditioner with split design
0049-2015-07 Edition 4, en_GB

Installation and operating instructions (translation of the orig-
inal)
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............................................................................................................... 5
1.6 Safety notes for the operator........................................................................................................... 6
1.7 Safety notes for installation, maintenance and inspection.............................................................. 6
1.8 Unauthorised modification and changes......................................................................................... 6
1.9 Intended use................................................................................................................................... 6
1.10 Warranty........................................................................................................................................ 6
1.11 Transport and packaging.............................................................................................................. 7
1.12 Environmental protection and recycling........................................................................................ 7
2 Technical data....................................................................................................................................... 8
2.1 Unit data.......................................................................................................................................... 8
2.2 Unit dimensions ............................................................................................................................ 10
2.3 Performance curves for heating and cooling ................................................................................ 11
3 Design and function............................................................................................................................ 14
3.1 Unit description............................................................................................................................. 14
4 Operation............................................................................................................................................. 15
5Installation instructions for qualified personnel.............................................................................. 23
5.1 Important notes prior to installation............................................................................................... 23
5.2 Wall openings................................................................................................................................ 23
5.3 Installation materials..................................................................................................................... 23
5.4 Selection of installation location ................................................................................................... 24
5.5 Minimum clearances..................................................................................................................... 26
5.6 Oil return measures....................................................................................................................... 27
5.7 Connection variants for the indoor unit......................................................................................... 27
5.8 Wall bracket for the indoor unit..................................................................................................... 28
6 Installation........................................................................................................................................... 28
6.1 Installation of the indoor unit......................................................................................................... 28
6.2 Connecting the refrigerant piping.................................................................................................. 29
6.3 Additional notes on connecting the refrigerant piping................................................................... 31
6.4 Leak testing................................................................................................................................... 31
6.5 Adding refrigerant.......................................................................................................................... 32
7 Condensate drainage connection and safe drainage...................................................................... 32
8 Electrical wiring................................................................................................................................... 34
8.1 General Information...................................................................................................................... 34
8.2 Connecting the indoor unit............................................................................................................ 34
8.3 Connecting the outdoor unit.......................................................................................................... 35
8.4 Electrical wiring diagram............................................................................................................... 35
8.5 Electrical drawings........................................................................................................................ 37
9 Before commissioning....................................................................................................................... 43
10 Commissioning................................................................................................................................... 43
11 Troubleshooting, fault analysis and customer service................................................................... 45
11.1 Troubleshooting and customer service....................................................................................... 45
3

11.2 Indoor unit fault analysis............................................................................................................. 47
12 Care and maintenance........................................................................................................................ 53
13 Shutdown............................................................................................................................................. 55
14 Exploded view and spare parts lists................................................................................................. 56
14.1 Exploded view - Indoor unit......................................................................................................... 56
14.2 Spare parts list - Indoor unit........................................................................................................ 57
14.3 Exploded view - Outdoor unit...................................................................................................... 58
14.4 Spare parts list - Outdoor unit..................................................................................................... 59
15 Index..................................................................................................................................................... 60
REMKO ML...DC
4

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.
5

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.
REMKO ML...DC
6

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.
7

2 Technical data
2.1 Unit data
Series ML 263 DC ML 353 DC ML 523 DC
Operating mode Inverter wall-mounted room air conditioner combination
for cooling and heating
Nominal cooling output 1) kW 2.80 (1.00-3.70) 3.50 (1.10-4.10) 5.10 (3.10-6.20)
Energy efficiency ratio SEER 1) 5.7 5.8 6.5
El. rated power consumpt., cooling 1) kW 0.90 1.05 2.19
El. rated current consumpt., cooling 1) A3.90 4.50 9.50
Power consumption, annual, QCE 3) kWh 172 187 269
Energy efficiency ratio, cooling 1) A+ A+ A++
Nominal heat capacity 2) kW 2.60 (0.90-3.80) 3.70 (1.00-4.40) 5.30 (1.50-6.40)
Energy efficiency ratio SCOP 4) 3.8 3.8 3.8
El. rated power consumpt., heating 2) kW 0.72 0.91 1.89
El. rated current consumpt., heating 2) A3.10 3.90 8.20
Power consumption, annual, QHE 3) kWh 958 1179 1805
Energy efficiency ratio, heating2) A A A
Max. power consumption kW 2.00 2.30 2.55
Max. current consumption A 9.00 10.50 11.50
EDP no. 1633263 1633353 1633523
Data specific to indoor unit ML 263 DC IT ML 353 DC IT ML 523 DC IT
From serial number: 1305... 1307... 1309...
Application area (room vol.), approx. m380 110 160
Adjustment range, room temperature °C +17 to +30 +8 with "FP" function
Operating range °C +17 to +32
Air flow volume per level m³/h 400/530/620 410/570/640 440/500/680
Sound pressure level p. speed set. 5) dB (A) 29/37/41 29/39/42 28/31/33
Sound pres. level, Silent/Turbo mode 5) dB (A) 26/43 22/44 26/41
Sound power level max. dB(A) 58 58 55
Enclosure class IP X 0
Condensate drainage connection mm 18
Dimensions: H/W/D mm 275/800/188 275/800/188 275/940/205
Weight kg 6.5 8.0 9.0
EDP no. 1633264 1633354 1633524
REMKO ML...DC
8

Data specific to outdoor unit ML 263 DC AT ML 353 DC AT ML 523 DC AT
Power supply V/Ph/
Hz 230 / 1~ / 50
Operating range, cooling °C +5 to +50
Operating range, heating °C +5 to +30 7)
Air flow rate, max. m³/h 1800 1800 2200
Enclosure class IP 24
Sound power level max. dB (A) 64 64 62
Sound pressure level 5) dB (A) 56 56 54
Refrigerant 6) R 410A
Refrigerant, basic capacity kg 0.80 0.80 1.25
Max. operating pressure kPa 4200 / 1500
Refrigerant, additional quantity >5m g/m 20
Refrigerant piping, max. length m 25 25 30
Refrigerant piping, max. height m 10 10 15
Refrigerant connection
Liquid line
Inche
s
(mm)
1/4 (6.35) 1/4 (6.35) 1/4 (6.35)
Refrigerant connection
Suction pipe
Inche
s
(mm)
3/8 (9.52) 3/8 (9.52) 1/2 (12.70)
Dimensions: H/W/D mm 540/780/250 540/780/250 590/760/285
Weight kg 29.50 29.50 35.0
From serial number 1306... 1308... 1310...
EDP no. 1633265 1633355 1633525
1) Air inlet temp. TK 27°C / FK 19°C, outside temperature TK 35°C, FK 24°C, max. air flow volume,
5m pipe length
2) Air inlet temp. TK 20°C, outside temperature TK 7°C, FK 6°C, max. air flow volume, 5m 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
5) At distance of 1m in the open air; specified values are maximum values
6) Contains greenhouse gas in accordance with the Kyoto protocol, GWP 1975 (for further information, see chapter "Adding refrigerant")
7) This can be extended to -15°C with the appropriate accessory kit
9

2.2 Unit dimensions
Outdoor units
A
BC
D
E
Fig. 1: Outdoor unit dimensions ML 263 DC AT-523 DC AT (All measurements in mm)
Dimensions (mm) A B C D E
ML 263 DC AT-353 DC AT 540 780 250 549 276
ML 523 DC AT 590 760 285 535 285
Indoor units
A
BC
Fig. 2: Indoor unit dimensions ML 263 DC IT-523 DC IT (All measurements in mm)
Dimensions (mm) A B C
ML 263 DC IT-353 DC IT 275 800 188
ML 523 DC IT 275 940 205
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
REMKO ML...DC
10

2.3 Performance curves for heating and cooling
Heating capacity ML 263 DC
0,00
1,00
2,00
3,00
4,00
5,00
12 7 2 0 -7 -10 -15
2
1
3
A[°C]
Fig. 3: Performance curves, heating ML 263 DC (data for 20 °C indoor temperature)
A: Outside temperature
1: COP
2: Heating capacity in kW
3: Power consumption in kW
Outside temp. in °C 12 7 2 0 -7 -10 -15
Heating capacity in kW 3.01 2.65 2.52 2.39 2.13 2.00 1.73
Power consumption in kW 0.69 0.68 1.14 1.08 1.01 1.01 0.95
COP 4.35 3.89 2.21 2.23 2.12 1.99 1.82
Cooling capacity ML 263 DC
0,00
0,50
1,00
1,50
2,00
2,50
3,00
3,50
4,00
21 25 30 35 40 45 50
2
1
3
A[°C]
Fig. 4: Performance curves, cooling ML 263 DC (data for 27/19 °C indoor temperature)
A: Outside temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW
Outside temp. in °C 21 25 30 35 40 45 50
Cooling capacity in kW 2.64 2.82 2.84 2.74 2.35 2.23 2.17
Power consumption in kW 0.74 0.80 0.87 0.95 0.96 0.98 1.02
EER 3.57 3.53 3.27 2.88 2.44 2.27 2.13
11

Heating capacity ML 353 DC
0,00
1,00
2,00
3,00
4,00
5,00
12 7 2 0 -7 -10 -15
2
1
3
A[°C]
Fig. 5: Performance curves, heating ML 353 DC (data for 20 °C indoor temperature)
A: Outside temperature
1: COP
2: Heating capacity in kW
3: Power consumption in kW
Outside temp. in °C 12 7 2 0 -7 -10 -15
Heating capacity in kW 3.75 3.30 3.14 2.98 2.65 2.49 2.15
Power consumption in kW 0.95 0.93 1.56 1.47 1.38 1.38 1.30
COP 3.96 3.54 2.01 2.03 1.93 1.81 1.65
Cooling capacity ML 353 DC
0,00
0,50
1,00
1,50
2,00
2,50
3,00
3,50
4,00
21 25 30 35 40 45 50
2
1
3
A[°C]
Fig. 6: Performance curves, cooling ML 353 DC (data for 27/19 °C indoor temperature)
A: Outside temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW
Outside temp. in °C 21 25 30 35 40 45 50
Cooling capacity in kW 3.12 3.32 3.35 3.23 2.77 2.63 2.56
Power consumption in kW 0.85 0.92 1.00 1.10 1.11 1.13 1.18
EER 3.65 3.60 3.34 2.94 2.49 2.32 2.17
REMKO ML...DC
12

Heating capacity ML 523 DC
0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
12 7 2 0 -7 -10 -15
2
1
3
A[°C]
Fig. 7: Performance curves, heating ML 523 DC (data for 20 °C indoor temperature)
A: Outside temperature
1: COP
2: Heating capacity in kW
3: Power consumption in kW
Outside temp. in °C 12 7 2 0 -7 -10 -15
Heating capacity in kW 5.79 5.09 4.85 4.61 4.10 3.85 3.33
Power consumption in kW 1.47 1.45 2.43 2.29 2.14 2.14 2.02
COP 3.94 3.52 2.00 2.01 1.92 1.80 1.64
Cooling capacity ML 523 DC
0,00
1,00
2,00
3,00
4,00
5,00
6,00
21 25 30 35 40 45 50
2
1
3
A[°C]
Fig. 8: Performance curves, cooling ML 523 DC (data for 27/19 °C indoor temperature)
A: Outside temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW
Outside temp. in °C 21 25 30 35 40 45 50
Cooling capacity in kW 4.71 5.03 5.07 4.88 4.19 3.97 3.87
Power consumption in kW 1.38 1.49 1.62 1.77 1.79 1.83 1.89
EER 3.42 3.38 3.13 2.76 2.34 2.17 2.04
13

3 Design and function
3.1 Unit description
The ML 263 DC-523 DC room air conditioners
have a REMKO ML...AT outdoor unit as well as an
ML...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 indoor unit is designed to be mounted high up
on the wall, in indoor areas. It is operated by an
infrared remote control.
The outdoor unit consists of a cooling cycle with
compressor, fin condenser, condenser fan,
reversing valve and throttle element. The outdoor
unit is controlled by the controller in the indoor unit.
The indoor unit consists of a fin evaporator, evapo-
rator fan, controller and condensate tray.
Floor brackets, wall brackets, refrigerant piping and
condensate pumps are available as accessories.
21
4
3
Fig. 9: Cooling cycle diagram for indoor unit
1: Evaporator
2: Evaporator fan
3: Suction pipe connection
4: Liquid line connection
2
1
4
3
5
7
8
9
6
Fig. 10: Cooling cycle diagram for outdoor unit
1: Condenser
2: Condenser fan
3: Reversing valve
4: Compressor
5: Filter dryer
6: Capillary tube throttle element
7: Pressure gauge connection
8: Suction pipe connection valve
9: Liquid line connection valve
1
7
8
9
B
A
4
3
5
6
2
3
5
Fig. 11: System layout
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 pipe
8: Liquid line
9: Control line
Refrigerant piping is used to connect the indoor
unit to the outdoor unit.
REMKO ML...DC
14

4 Operation
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 units can be put into operation man-
ually. After the air inlet screen has been opened,
the inner recessed key can be pressed and auto-
matic mode can be activated. In manual mode, the
following settings apply:
Cooling mode: last setting
Fan speed: AUTO
Heating mode: last setting
Fan: AUTO
Press a key on the infrared remote control to inter-
rupt manual mode.
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). Removing the batteries causes all stored
data to be lost. The remote control will then access
the default settings, which you are free to cus-
tomise at any time.
max. 6 m
Fig. 12: Maximum distance
Alarms are indicated by a code (see chapter
Troubleshooting and customer service).
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.
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 func-
tion is excluded from our recommendation!
Display on indoor unit
The display illuminates according to the settings.
2
1
4
35
Fig. 13: Display on indoor unit
1: Set setpoint/fault indicator
2: Ionic function activated/deactivated
3: De-frosting function activated or pre-heating
(in heating mode) activated
4: Operating lamp
5: Timer activated/deactivated
15

Keys on the remote control
2
1
4
3
5
7
9
12
14
6 8
10
11
13
Fig. 14: Keys on the remote control
1
"ON/OFF" key
Press this key to put the unit into operation and
take it out of operation.
2
"MODE" key
Press this key to select the operating mode. The
indoor unit has 5 modes:
1. Automatic mode
In this mode, the unit works in cooling or in heating
mode.
2. Cooling mode
In this mode, the warm air in the room is cooled
down to the preset temperature.
3. Dehumidification mode
In this mode, the room is dehumidified, and in
doing so the room temperature is significantly low-
ered. It is not possible to influence the temperature
and humidity in this mode.
4. Heating mode
In this mode, the warm air in the room is heated up
to the desired temperature.
5. Recirculation mode
In this mode, the air in the room is recirculated.
Temperature selection is not possible.
3
"FAN" key
Press this key to set the desired fan speed. 4
speeds are available:
Automatic, low, medium and high fan stage.
4
"SLEEP/FRESH" key
"SLEEP" key
Pressing this key will automatically increase or
decrease the target temperature by 1 °C within an
hour in cooling and heating mode respectively.
Press this key to maintain the most convenient
temperature and save energy. This function is only
available in "Cooling", "Heating" and "Auto" modes.
If the unit is working in "SLEEP" mode, this activity
is interrupted by pressing the "MODE", "FAN",
"Speed" or "ON/OFF" keys.
"FRESH" key
Activates the unit's ion generator. This releases
negatively charged particles into the airflow, which
neutralises the influences of smoke and dust,
among other things.
5
"TURBO" key
The "TURBO" function allows the preset tempera-
ture to be reached in the shortest possible time.
Pressing this key in "Cooling mode" causes the
unit to blow a blast of cooling air into the room at a
very high fan speed.
6
"SELF CLEAN" key
This key activates the self-clean function.
7
" ▲ " and " ▼ " keys
The " ▲ " key increases the desired temperature to
30°C in 1°C increments.
The " ▼ " key decreases the desired temperature
to 17°C in 1°C increments.
8
"LED" key
This key switches the lighting on the indoor unit off
and back on again.
REMKO ML...DC
16

9
"FOLLOW ME" key
Pressing this key initiates the "Follow Me" function.
The display on the remote control shows the actual
temperature of the current location of the remote
control. The remote control transmits this signal to
the air conditioning unit at intervals of 3 minutes,
until the "Follow Me" key is pressed again. The air
conditioning unit automatically cancels the "Follow
Me" function if it has not received the signal for a
period of 7 minutes.
10
"SILENT MODE" / "FP" key
This key activates/deactivates Silent mode.
The fan speed is reduced to a minimum.
In this mode, the air conditioning unit operates
silently.
The "FP" (Freeze Protection) key activates a frost
protection function with which the setpoint in heat
mode is set to ca. 8°C.
11
"TIMER ON" key
This key initiates the automatic switch-on time for
the unit. Each time the key is pressed, the auto-
matic time setting increases in increments of 30
minutes. Once the time setting shows 10.0, the
automatic time setting increases in increments of
60 minutes each time the key is pressed. In order
to cancel the automatic time setting, simply set the
automatic switch-on time to 0.0.
12
"TIMER OFF" key
This key initiates the automatic switch-off time for
the unit. Each time the key is pressed, the auto-
matic time setting increases in increments of 30
minutes. Once the time setting shows 10.0, the
automatic time setting increases in increments of
60 minutes each time the key is pressed. In order
to cancel the automatic time setting, simply set the
automatic switch-off time to 0.0.
13
"Fin setting horizontal" key
This key sets the position of the horizontal exhaust
fins. Each time the key is pressed, the fins change
position by 6 degrees.
In addition, this key is used to stop and start the
automatic "Swing" function of the horizontal
exhaust fins.
14
"Fin setting vertical" key
This key has no function.
Indicators on the LCD
2
1
4
35
7
9
6
8
Fig. 15: Indicators on the LCD
1: Mode indicator - shows the current operating
modes, including Auto ( ), Cooling ( ), Dehu-
midification ( ), Heating ( ), Fan ( ) and
back to Auto ( ) mode.
2: Signal transmission symbol. This symbol
appears when signals are being transmitted
from the remote control to the indoor unit.
3: ON/OFF symbol. This symbol appears when
the "ON/OFF" key is pressed. Pressing this key
again causes the indicator to go out.
4: TIMER ON symbol. This symbol appears when
TIMER ON is switched on.
5: TIMER OFF symbol. This symbol appears
when TIMER OFF is switched on.
6: Sleep symbol. This symbol appears when the
"Sleep" function is activated. Pressing this key
again causes the indicator to go out.
7: Temperature/Timer symbol. Shows the temper-
ature setting (-17°C~30°C). If "FAN" mode is
selected, the temperature setting is not dis-
played. In Timer mode, the ON and OFF set-
tings appear for the TIMER.
8: FOLLOW ME symbol. This symbol appears
when the "Follow me" function is activated.
9: Fan speed symbol. This is where the selected
fan speeds are displayed: AUTO (no indicator)
and the three fan speed settings: (slow),
(medium) and
(fast). The fan speed is set to "Automatic"
when either "Auto" or "Dehumidification" mode
is activated.
The illustration of the LCD with all of the sym-
bols present is only intended to provide a
clearer overview. During operation, only those
symbols relevant to the respective functions
appear on the display.
17

Key functions
A symbol is shown on the display to indicate that
the settings are being transferred.
"Auto" mode
Make sure that the indoor unit is connected to the
power supply, and is switched on.
The operating mode indicator on the display of the
indoor unit begins to flash.
1. Press the "MODE" key to select "Auto"
mode.
2. Press the "UP/DOWN" key to set the desired
temperature. The temperature can be set
between 17 and 30°C, in increments of 1°C.
3. Press the "ON/OFF" key to switch on the air
conditioning unit.
1
3
2
Fig. 16: "Auto" mode
–In "Auto" mode, the air conditioning unit is
able to logically select between the
"Cooling" , "Recirculation" and "Heating"
modes, specifically by detecting the differ-
ence between the actual room temperature
and the temperature set on the remote
control.
–In "Auto" mode, it is not possible to set the
fan speed. This is already controlled auto-
matically.
–If "Auto" mode is not comfortable enough
for you, you can also select the desired
mode manually.
"Cooling", "Heating" and "Recirculation" mode
Make sure that the indoor unit is connected to the
power supply, and is switched on.
1. Press the "MODE" key to select from oper-
ating modes "Cooling", "Heating" or "Recircu-
lation".
2. Press the "UP/DOWN" key to set the desired
temperature. The temperature can be set
between 17 and 30°C, in increments of 1°C.
3. Press the "FAN" key to select from the four
fan speeds (Auto, slow, medium and fast).
4. Press the "ON/OFF" key to switch on the air
conditioning unit.
1
4
2
3
Fig. 17: "Cooling", "Heating" and "Recirculation"
mode
–In "Fan" mode, the temperature setting is
not shown on the remote control, and it is
not possible to check the room tempera-
ture. In this case steps 1, 3 and 4 can be
carried out.
"Dehumidification" mode
Make sure that the indoor unit is connected to the
power supply, and is switched on.
The operating mode indicator on the display of the
indoor unit begins to flash.
REMKO ML...DC
18

1. Press the "MODE" key to select "Dehumidifi-
cation" mode.
2. It is not possible to set a temperature here.
3. Press the "ON/OFF" key to switch on the air
conditioning unit.
1
3
2
Fig. 18: "Dehumidification" mode
In "Dehumidification" mode, it is not possible to
set the fan speed. This is already controlled
automatically.
"Timer" mode
Press the "TIMER ON" key to set the "Auto on"
time and the "TIMER OFF" key to set the "Auto off"
time for the unit.
Setting the "Auto on" time
1. Press the "TIMER ON" key. The remote con-
trol shows "TIMER ON", the last "Auto on"
time setting and the symbol "H" appears on
the display. The unit is now ready to reset the
"Auto on" time and to start "TIMER ON"
mode.
2. Press the "TIMER ON" key again to set the
desired "Auto on" time. Each time the key is
pressed, the time is increased by half an
hour between 0 and 10 hours, and by an
hour between 10 and 24 hours.
3. Once these settings have been made, there
is a one second delay before the remote con-
trol transmits the signal to the indoor unit.
Then, after approx. two seconds, the "H"
symbol disappears from the LCD display,
and the set temperature appears again on
the display.
2
1
Fig. 19: "Timer" mode
19

Setting the "Auto off" time
1. Press the "TIMER OFF" key. The remote
control shows "TIMER OFF", the last "Auto
off" time setting and the symbol "H" appears
on the display. The unit is now ready to reset
the "Auto off" time and to stop "TIMER OFF"
mode.
2. Press the "TIMER OFF" key again to set the
desired "Auto off" time. Each time the key is
pressed, the time is increased by half an
hour between 0 and 10 hours, and by an
hour between 10 and 24 hours.
3. Once these settings have been made, there
is a one second delay before the remote con-
trol transmits the signal to the indoor unit.
Then, after approx. two seconds, the "H"
symbol disappears from the LCD display,
and the set temperature appears again on
the display.
–When Timer mode is selected, the remote
control automatically transfers the timer
signal to the indoor unit for the specified
period of time. Therefore, you should hold
the remote control in a location where it
can transfer the signal to the indoor unit
without interference.
–The effective operation for the time settings
by the remote control for the timer function
is restricted to the following settings:
0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0,
5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23 and 24.
Example TIMER function settings
"TIMER ON" (Auto on mode)
The "TIMER ON" function is useful if you want the
unit to switch on automatically before you come
home. The air conditioning unit will commence
operation automatically at the set time.
Example:
You want the air conditioning unit to switch on six
hours from the time it was programmed.
1. Press the "TIMER ON" key. The last oper-
ating time setting for the timer, and the "H"
symbols, appear on the display.
2. Press the "TIMER ON" key until the desired
start time is shown in the "TIMER ON" area
on the remote control.
3. Wait for 3 seconds and the temperature
appears again in this area of the digital dis-
play. The "TIMER ON" indicator stays lit, and
this function is activated.
Start
Off
6 hours laterSet time
Fig. 20: "TIMER ON" example
"TIMER OFF" (Auto off mode)
The "TIMER OFF" function is useful if you want the
unit to switch off automatically once you have gone
to bed. The air conditioning unit will cease opera-
tion automatically at the set time.
Example:
You want the air conditioning unit to switch off ten
hours from the time it was programmed.
1. Press the "TIMER OFF" key. The last oper-
ating time setting for the timer, and the "H"
symbols, appear on the display.
2. Press the "TIMER OFF" key until "10H" is
shown in the "TIMER OFF" area on the
remote control.
3. Wait for 3 seconds and the temperature
appears again in this area of the digital dis-
play. The "TIMER OFF" indicator stays lit,
and this function is activated.
REMKO ML...DC
20