REMKO HITLINE LRM Series User manual

Operating and
installation instructions
REMKO
Read the instructions prior to performing any task!
REMKO LRM series
LRM 350, LRM 500
Air purifier
0276-2020-11 Edition 1, en_GB

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 instructions for the operator................................................................................................. 5
1.7 Safety notes for installation, maintenance and inspection work...................................................... 5
1.8 Unauthorised modification and changes......................................................................................... 5
1.9 Intended use................................................................................................................................... 6
1.10 Warranty........................................................................................................................................ 6
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............................................................................................................................... 9
3 Design and function............................................................................................................................ 10
3.1 Air purification - general operation................................................................................................ 10
3.2 Unit description.............................................................................................................................. 11
4 Operation............................................................................................................................................. 13
5Assembly............................................................................................................................................. 14
5.1 Unit transport................................................................................................................................. 14
5.2 Setting up the unit......................................................................................................................... 15
6 Commissioning................................................................................................................................... 16
7 Shutdown............................................................................................................................................. 16
8 Care and maintenance........................................................................................................................ 17
9 Troubleshooting and customer service............................................................................................ 20
10 View of the unit.................................................................................................................................... 21
11 Spare parts list.................................................................................................................................... 22
12 Index..................................................................................................................................................... 23
REMKO
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 LRM series
4

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.
This unit can be used by children above the age of
8, as well as by people with impaired physical,
sensory or mental capabilities or a lack of experi-
ence and knowledge if they are supervised or have
received instruction in the safe operation of the
unit, and if they understand the associated poten-
tial hazards. Children must never play with the unit.
Cleaning and user maintenance must not be car-
ried out by unsupervised children.
nThe units and components may only be set up,
installed and maintained by qualified per-
sonnel.
nIf the mains power supply line of this unit is
damaged, this must be replaced by the manu-
facturer or their customer services department
or a similarly qualified person in order to avoid
any hazard.
nDo not operate units or components with
obvious defects or signs of damage.
nThe units may not be installed or operated in
explosive environments.
nThe units must not be installed or operated in
atmospheres containing oil, sulphur, chlorine or
salt.
nThe units must be installed upright and in a
stable position.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.
nAll housing parts and unit openings, e.g. air
inlets and outlets, must be free from foreign
objects. An unobstructed air inlet and air outlet
must be guaranteed at all times.
nThe units must not be covered during opera-
tion.
nNever insert foreign objects into the units.
nThe units must not be transported while they
are running.
NOTICE!
Extensions to the connection cable must only
be conducted by authorised specialist electri-
cians, taking into consideration the unit power
consumption, cable length and local use.
DANGER!
Work on the electrical equipment must only be
conducted by an authorised specialist!
1.7 Safety notes for
installation, maintenance and
inspection work
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.
nIf the mains power supply line of this unit is
damaged, this must be replaced by the manu-
facturer or their customer services department
or a similarly qualified person in order to avoid
any hazard.
nThe units must be installed upright and in a
stable position.
nThe units must not be exposed to direct jets of
water, e.g. pressure washers etc.
nSafety devices may not be modified or
bypassed.
nThe units and components may only be set up,
installed and maintained by qualified per-
sonnel.
nDo not operate units or components with
obvious defects or signs of damage.
nThe units may not be installed or operated in
explosive environments.
nThe units must not be installed or operated in
atmospheres containing oil, sulphur, chlorine or
salt.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.
nAll housing parts and unit openings, e.g. air
inlets and outlets, must be free from foreign
objects. An unobstructed air inlet and air outlet
must be guaranteed at all times.
nAll electrical cables on the outside of the units
must be protected against damage (e.g. by ani-
mals etc.).
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.
REMKO
5

1.9 Intended use
The units have been designed as air purifiers for
the cleaning of air.
Any different or additional use shall be classed as
non-intended use. The manufacturer/supplier
assumes no liability for damages arising from 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.
Under no circumstances should the threshold
values specified in the technical data 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!
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 LRM series
6

2 Technical data
2.1 Unit data
Unit data LRM 350
Series LRM 350
Version Local air purifier with quadruple filtration
Max. cleaning performance m3/h 300
Filter stages Nylon pre-filter, filter foam mat, activated carbon
granulate cassette, HEPA H13 filter
HEPA H13 filter separation efficiency % 99.975
Operating range °C/r.H.% +5 to +50/35 to 75
Power supply V/Ph/Hz 230/1~/50
Enclosure class IP20
Fan stage Sleep 1 2 3
Room area application area, per stage m2- 15-20 20-28 28-35
Air flow volume per stage setting m3/h 101 150 210 325
Power consumption, per stage W 5 8 11 40
Max. current consumption A 0.04 0.07 0.1 0.29
Sound pressure level, per stage 1) dB(A) 28 39 45 59
Sound power level, per stage dB(A) 36 47 53 67
Series LRM 350
Dimensions
Height mm 617
Width mm 400
Depth mm 190
Weight kg 6.8
Standard colour White, similar to RAL 9003
EDP no. 1620350
1) Distance 1 m free field
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
REMKO
7

Unit data LRM 500
Series LRM 500
Version Local air purifier with quadruple filtration
Max. cleaning performance m3/h 450
Filter stages Nylon pre-filter, filter foam mat, activated carbon
granulate cassette, HEPA H13 filter
HEPA H13 filter separation efficiency % 99.975
Operating range °C/r.H.% +5 to +50/35 to 75
Power supply V/Ph/Hz 230/1~/50
Enclosure class IP20
Fan stage Sleep 1 2 3
Room area application area, per stage m2- 20-30 30-40 40-50
Air flow volume per stage setting m3/h 130 210 290 457
Power consumption, per stage W 5 8 14 57
Max. current consumption A 0.04 0.07 0.15 0.36
Sound pressure level, per stage 1) dB(A) 29 40 45 59
Sound power level, per stage dB(A) 37 48 53 67
Series LRM 500
Dimensions
Height mm 682
Width mm 440
Depth mm 190
Weight kg 9.7
Standard colour White, similar to RAL 9003
EDP no. 1620500
1) Distance 1 m free field
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
REMKO LRM series
8

2.2 Unit dimensions
LRM 350
617
190 400
4
3
2
1
3
2
1
8h 4h
2h
REMKO
Fig. 1: Unit dimensions LRM 350 (all measurements in mm)
LRM 500
682
190 440
4
3
2
1
3
2
1
8h 4h
2h
REMKO
Fig. 2: Unit dimensions LRM 500 (all measurements in mm)
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
REMKO
9

3 Design and function
3.1 Air purification -
general operation
The correlations occurring when air is purified are
based on physical laws and effects. These are
depicted here in graphical form in order to provide
you with a brief overview of the principles of air
purification.
The use of REMKO air purifiers
Our ambient air contains a lot of different foreign
substances such as dust, fibres, pollen, germs and
smoke, which are caused by various processes
(combustion, agitation, abrasion, processing of
materials, etc.). The particles in the air can cause
various reactions in humans and the environment.
The following physical effects enable these foreign
substances to be filtered out of the room air.
Sieve effect
Particles that are larger than the free space
between the individual filter fibres remain trapped
and are thus caught by the filter.
Fig. 3: Sieve effect
Barrier effect
Smaller particles follow the diverted air flow around
the individual filter fibres. If the particles get too
close to a filter fibre, they get caught and are pre-
vented from further penetrating.
Fig. 4: Barrier effect
Inertia effect
Due to their inertia, larger particles leave their tra-
jectory when the airflow is deflected by a filter fibre
and collide directly with the filter fibre, where they
finally get caught.
Fig. 5: Inertia effect
REMKO LRM series
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Diffusion effect
Very small particles (<1µm) are guided by Brow-
nian molecular motion. The particles do not follow
the general air flow, but move completely at
random in a zigzag pattern and eventually hit a
filter fibre.
Fig. 6: Diffusion effect
Electrostatic charging
In contrast to the effects listed above, electrostatic
charging does not filter the particles mechanically,
but rather binds them together by generating nega-
tively charged ions (anions). The bonded particles
have a higher mass and a larger diameter, which
means they can be more effectively captured by
the filters.
Fig. 7: Electrostatic charging
3.2 Unit description
The units have been designed for universal and
straightforward air purification.
Their compact dimensions allow the unit to be
transported and set up with ease.
The air purifiers of the LRM series primarily use
four air filters arranged in a row for optimal air puri-
fication. Each of the four filters has its strengths in
removing certain types and sizes of particles. The
filters make use of various physical effects for fil-
tering.
The units conform to the fundamental health and
safety requirements of the appropriate EU regula-
tions. The units are dependable and offer ease of
operation.
The units can be used anywhere where value is
placed on clean room air and a healthy room cli-
mate needs to be created.
REMKO
11

Unit construction
The basis is a flow-optimised housing with a centrally positioned radial fan. The room air is sucked in over a
large area at the rear of the unit and drawn through the filters arranged in a row. The cleaned air is then fed
back into the room via the air outlet on the top of the unit.
2
1
4
3
5
6
Fig. 8: Unit construction
1: Radial fan
2: HEPA filter
3: Activated carbon granulate cassette
4: Filter foam mat
5: Nylon pre-filter
6: Housing cover, rear of unit
The pre-filter traps coarse particles such as fibres,
animal hair and scales to protect the downstream
filters from excessive loading and premature satu-
ration by larger particles.
Particles of medium size such as coarse dust and
fine sand stick to their surface due to their inertia
and the disordered structure of the filter foam mat.
The activated carbon granulate in the granulate
cassette has countless microscopically small pores
and capillary systems. This results in an immense
inner surface from which gas molecules, vapours
and odours from the air can be adsorbed.
The H13 HEPA filter with its separation efficiency
of 99.975 % removes the remaining finer particles,
such as fine dust, pollen, smoke and germs from
the air. In addition to the filter system, the inte-
grated anion generator can be switched on at the
push of a button.
REMKO LRM series
12

4 Operation
4
3
2
1
3
2
1
8h 4h
2h
2
14
3567 8 9
Fig. 9: Control panel
1
"ON/OFF" key
This key switches the unit on and off.
2
“Fan Speed” key
By pressing this key, it is possible to choose
between the fan stages Low (1), Medium (2) and
High (3).
3
"TIMER" key for switch-off delay
The switch-off delay can be activated with this key
when the machine is switched on. It is possible to
select a unit switch-off time delay of 2, 4 and 8
hours.
4
"Auto Fan" key
This key can be used to activate and deactivate
the automatic fan control. When automatic fan con-
trol is activated, the unit automatically selects the
fan speed based on the air quality.
5
“Sleep” night mode key
Pressing this key activates and deactivates night
mode. When night mode is activated, the fan
speed is reduced to a minimum and the control
panel lighting is dimmed.
6
“AQ” air quality display key
Display visualising the quality of the room air. The
colours shown are to be understood as follows:
Red: poor air quality
Orange: average air quality
Green: good air quality
7
“Anion” generator key
This key can be used to activate and deactivate
the anion generator. When the anion generator is
activated, the air purifier produces anions that
attract and bind suspended particles in the air. The
bonded particles can be better separated by the fil-
ters due to their greater mass and increased diam-
eter.
8
“Lock” key
Pressing this key activates the key lock. The key
lock can be deactivated again by holding the key
down.
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13

9
“Filter” filter change key
This key can be used to reset the filter cleaning or
filter change message after filter cleaning or filter
change has been completed. If filter cleaning or a
filter change is necessary, the corresponding LED
flashes. The numbered LEDs are assigned as fol-
lows:
1: Pre-filter
2: Filter foam mat
3: Activated carbon granulate cassette
4: HEPA filter
When the unit is switched on, the appropriate filter
can be selected by briefly pressing the key. The
selected LED lights up steadily. The filter cleaning
or filter change message can be reset by pressing
and holding for 3 seconds.
The operating hours counter for the filter cleaning
or filter change message can also be reset if the
filter was cleaned or changed prematurely and the
corresponding lamp does not yet announce the
change. To do this, press and hold the filter key for
3 seconds when the unit is switched off. As soon
as the LEDs start flashing, the desired filter can be
selected by pressing the key again. The selected
filter lights up continuously.
The operating hours counter for the filter cleaning
or filter change message can now be reset by
pressing and holding for 3 seconds. The operation
can be cancelled by pressing the On/Off key.
5 Assembly
5.1 Unit transport
The units can be transported either upright or lying
down. For easy transport, the air purifiers are
equipped with a transport handle in the upper part
of the rear of the unit.
Fig. 10: Transport handle
The connection cable can be stowed away in the
transport compartment provided for this purpose
for transport and storage after removing the rear
cover of the unit.
Fig. 11: Transport compartment connection cable
WARNING!
The mains cable must never be used as a pull
cord or fixing device.
REMKO LRM series
14

5.2 Setting up the unit
For the best economic and safe use of the units,
the following notes must be followed in full:
nThe units must be set up in an upright and
level position in order to ensure unhindered
operation of the unit
nIt must be ensured that the air can be sucked
in at the rear of the unit and blown out of the
top of the unit without obstruction (min. 50 cm
minimum clearance)
nObserve a minimum clearance of 20 cm from
walls on all sides at all times
nUnits must never be set up in the immediate
vicinity of heaters or other sources of heat
nThe area of application must be closed to the
neighbouring atmosphere
nThe output of the unit is dependent on the con-
ditions inside the room, room temperature, rel-
ative humidity and particle emissions
nNo emission sources should be located near
the indoor air quality sensor. (left side of the
unit)
REMKO
500
200
200
Fig. 12: Minimum clearances (all measurements in
mm)
- Keep windows and doors closed!
- Keep at least 0.2 m away from walls.
- Maintain adequate clearance from heaters or
other sources of heat.
The air purifier should be placed as centrally as
possible in the middle of the room to achieve
optimum air circulation
REMKO
Fig. 13: Set up in the middle of the room
If it is not possible to set up the unit in the middle
of the room, it can also be set up on the side of a
wall.
Fig. 14: Set up on the side of the room
REMKO
15

6 Commissioning
Initial commissioning
The air filters are shrink-wrapped in film when
delivered. The filters must be removed from the
unit and unpacked before initial commissioning.
The procedure for removing and inserting the fil-
ters is described in the “Care and maintenance”
chapter.
Important notes prior to commissioning
nAll extensions to the electrical connection must
be of a sufficient cable size and must only be
used fully rolled out or unrolled.
nNever use the power supply connection cable
as a pull cord.
NOTICE!
Operating the unit with welded-in filters can
cause damage to the internal components of
the unit.
Commissioning
Start the unit as follows:
1. Plug the unit's power plug into a properly
installed and fused mains socket (230V/50
Hz).
If you connect the air purifier to the mains,
the unit should be switched off (not oper-
ating). The operating unit emits an acoustic
signal.
2. Actuate the “ON/OFF” key. The operating
unit emits an acoustic signal. The “ON/OFF”
button lights up to indicate that the unit is
activated.
3. Select the desired operating parameters on
the operating panel.
Automatic restart after power failure:
If the electrical power fails or if the power plug is
pulled out during operation, the unit switches off.
When the power source is restored or when the
plug is plugged in again, the unit restarts automati-
cally with the saved settings.
7 Shutdown
If the air purifier is to be deactivated, this can be
done either manually using the “ON/OFF” key on
the operating panel or automatically using the pre-
set switch-off delay (“Timer” key).
NOTICE!
If a shutdown with a longer service life is
planned, it is recommended to dispose of the fil-
ters for reasons of hygiene and to replace them
when they are put back into operation.
REMKO LRM series
16

8 Care and maintenance
Filter maintenance intervals
There are 4 LEDs on the operating element, each assigned to a filter stage. The individual LEDs light up
after a defined operating time has elapsed and thus indicate the required filter cleaning or filter change. The
prompt is displayed sooner or later, depending on user behaviour. For orientation purposes, the following
running times can be assumed.
Filter stage
Equivalent to
24h/d 18h/d 12h/d Measure
Nylon pre-filter 30 days 45 days 60 days Cleaning
Filter foam mat 90 days 135 days 180 days
Replacement
Activated carbon granulate
cassette
180 days 270 days 360 days
HEPA filter 180 days 270 days 360 days
If usage is less than an average of 12 hours a day,
the filters should nevertheless be cleaned or
replaced at the latest after 60 days (nylon pre-
filter), 180 days (filter foam mat) and 360 days
(activated carbon granulate cassette & HEPA
filter).
General information on care and maintenance
DANGER!
Care and maintenance work may only be car-
ried out if the unit is disconnected from elec-
trical power.
nObserve the regular care and maintenance
intervals
nNever subject to direct jets of water (e.g. pres-
sure washers etc.)
nNever use abrasive or solvent-based cleaners
nEven with heavy contamination, use only suit-
able cleaners.
nRegularly check the air inlet and outlet area for
dirt
nPut the unit out of operation 60 minutes before
planned work on the filters
When handling used filters, make sure that you
take adequate health protection measures (dis-
posable gloves, mouth/nose protection). If pos-
sible, carry out the work outside the usage time
of the room in question.
Removing and inserting the filters
The filters can be removed from the unit and
replaced as follows:
1. Pull carefully on the recesses provided in the
upper part of the housing cover. Then lift the
housing cover out of the brackets on the
underside of the unit and set it aside
REMKO
17

2. Pull the nylon pre-filter out of the unit by the
tabs. Pay attention to the retaining tabs on
the sides and on the lower edge
3. Pull the filter foam mat attached with Velcro
strips off the activated carbon granulate cas-
sette.
4. Pull the granular activated carbon cartridge
out of the unit by the tab.
5. Pull the HEPA filter out of the unit by the tab.
To insert the filters into the unit, proceed in reverse
order. Insert the filters so that the tabs are acces-
sible and the numbering (except the filter foam
mat) remains visible.
REMKO LRM series
18

Cleaning the pre-filter
The pre-filter consists of a nylon fabric that pre-
vents coarse particles such as hair and dust flakes
from further entering the following filters. The pre-
filter can either be cleaned carefully with a vacuum
cleaner or with lukewarm water.
Fig. 15: Cleaning the pre-filter with a vacuum
cleaner
Heavier contamination may be remedied by rinsing
the filter in a lukewarm (max. 40°C) soap solution.
Finally, always rinse the filter carefully with clear
water and allow to dry.
Fig. 16: Clean the pre-filter with lukewarm tap
water
Before refitting the dust filter, ensure that its fully
dry and that no damage has been sustained.
Replacing the after-filters
The filter foam mat, the activated carbon granulate
cassette and the HEPA filter cannot be regener-
ated. After removal, the filters must be disposed of
and replaced with new original filters. Handle used
filters with care and dispose of them as soon as
possible to prevent particles from separating from
the filter media and getting back into the room air.
If the used filters cannot be disposed of immedi-
ately, it is advisable to store the filters in airtight
sealed packaging until final disposal.
Do not bend, fold or knock out the used filters
on any other object. The particles released in
the process can pose a health risk if inhaled.
As a rule, the used filters can be disposed of in
household waste. If harmful substances have
been filtered with the filters, it may be neces-
sary to dispose of the filters as hazardous
waste. If in doubt, enquire about local regula-
tions and laws.
Cleaning the units
The units should be cleaned regularly both outside
and inside the filter housing. Use gentle cleaning
agents and clean the unit with a soft cloth. How
often the unit needs to be cleaned depends heavily
on the usage pattern and should always be
checked.
Fig. 17: Cleaning the filter housing
REMKO
19

9 Troubleshooting and customer service
The unit and components are manufactured using state-of-the-art production methods and tested several
times to verify that they function correctly. However, if malfunctions should occur, please check the functions
as detailed in the list below. For systems with an indoor unit and outdoor unit, refer to the chapter "Trouble-
shooting and customer service" in both operating manuals. Please inform your dealer if the unit is still not
working correctly after all function checks have been performed!
Operational malfunctions
Malfunction Possible causes Remedial measures
The unit does not start or switches
itself off
Power failure Check the voltage and if neces-
sary, wait for it to come back on
Defective mains fuse Arrange to have exchanged
Damaged power supply Repair by specialist firm
Switch-off delay (timer function)
Housing cover (rear of unit)
opened
Close the housing cover
The unit cannot be operated Key lock active Deactivate key lock
Operating panels do not light up Sleep function active Deactivate sleep function
Air quality display remains red
even after long periods of opera-
tion
Emission source near the sensor Remove emission source or relo-
cate unit
DANGER!
Work on the electrical equipment must only be
conducted by an authorised specialist!
REMKO LRM series
20