Dantherm CDS 80 User manual

CDS 80/100/200
DA EN
DE FR
No. 974802 • rev. 2.0 • 19.02.2004
DA
Servicemanual til affugter CDS 80/100/200 Side 2
EN
Service manual for dehumidifier CDS 80/100/200 Page 11
DE
Wartungsanleitung für Entfeuchter CDS 80/100/200 Seite 20
FR
Manuel d’entretien de deshumidificateurs CDS 80/100/200 Page 29

Der tages forbehold for trykfejl og ændringer
Dantherm can accept no responsibility for possible errors and changes
Irrtümer und Änderungen vorbehalten
Dantherm n’assume aucune responsabilité pour erreurs et modifications éventuelles
Der tages forbehold for trykfejl og ændringer
Dantherm can accept no responsibility for possible errors and changes
Irrtümer und Änderungen vorbehalten
Dantherm n’assume aucune responsabilité pour erreurs et modifications éventuelles

2
Indholdsfortegnelse:
1. Funktionsbeskrivelse...................................................................................................3
2. Tekniske data..............................................................................................................4
2.1 Dimensioner..........................................................................................................4
3. Opstilling af affugteren................................................................................................4
3.1 Placering...............................................................................................................4
3.2 Afløb for kondensvand..........................................................................................4
4. Elektrisk tilslutning.......................................................................................................5
4.1 Indikationer på betjeningspanelet..........................................................................5
4.2 Tilslutning af hygrostat..........................................................................................7
4.3 Tilslutning af termostat..........................................................................................7
5. Drift .............................................................................................................................7
5.1 Affugtning..............................................................................................................7
5.2 Ventilation uden affugtning....................................................................................8
5.3 Affugtning med tilsluttet el-varmelegeme..............................................................8
5.4 Ventilation med tilsluttet el-varmelegeme..............................................................8
6. Elektriske styrefunktioner............................................................................................8
6.1 Arbejdsområde – temperatur.................................................................................8
6.2 Afrimning...............................................................................................................8
6.3 Sikkerhedskredsløb...............................................................................................8
7. Service og vedligeholdelse..........................................................................................9
7.1. Rengøring af filter.................................................................................................9
7.2. Rengøring af affugteren.......................................................................................9
8. Fejlfinding....................................................................................................................9
8.1 Bortskaffelse .......................................................................................................10
9. Kølekredsløb.............................................................................................................38
10. El-diagram.................................................................................................................39
11. Målskitser..................................................................................................................42
12. Reservedelslister og splittegninger ...........................................................................45

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1. Funktionsbeskrivelse
CDS 80/100/200 arbejder efter kondenseringsprincippet. Den fugtige rumluft suges ind i affugteren ved hjælp af en
ventilator. Inde i fordamperen afkøles luften, og når dens temperatur falder til under dugpunktet, udkondenseres
luftens vanddampe til dråber, som opsamles i drypbakken og ledes til afløb. Den tørre, afkølede luft ledes videre
gennem kondensatoren, hvor den genopvarmes. Som følge af den varme som frigives ved vanddampenes
kondensering samt varmetilskuddet, der stammer fra kompressorens driftseffekt, tilføres luften mere varme end det,
der blev fjernet fra den under afkøling. Dette varmetilskud svarer omtrent til en temperaturstigning på 5°C. Ved en
stadig cirkulation af rumluften gennem affugteren vil rumluftens relative fugtighed efterhånden falde, hvorved der
opnås en hurtig og skånsom affugtning.
Venstre betjeningspanel med
omskifter for affugtning,
ventilation og varme
Kondensafløb
Indsugning gennem filter
(3 sider)
Højre betjeningspanel med
timetæller, hovedafbryder,
fejlmelding
Reset for termorelæ for
kompressorbeskyttelse er
placeret i betjeningspanelets
midterste del
Udblæsningsventiler

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2. Tekniske data
Model CDS 80 CDS 100 CDS 200
Arbejdsområde - temperatur °C 5 – 32 5 – 32 5 – 32
Arbejdsområde - fugtighed %RF 30 – 100 30 – 100 30 – 100
Luftmængde m³/h 1600 2800 3000
Nettilslutning V/Hz 3x400/50 3x400/50 3x400/50
Max. ampereforbrug uden el-varmelegeme A 5,8 9,1 13,7
Max. effektoptagelse uden el-varmelegeme kW 2,5 3,8 6,4
Max. ampereforbrug med el-varmelegeme A 16,2 19,5 24,1
Max. effektoptagelse med el-varmelegeme kW 9,7 11,0 13,6
Kølemiddel R407C R407C R407C
Kølemiddelfyldning kg 2,250 4,300 7,000
Lydniveau (1 m fra affugteren) dB(A) 61 63 62
Vægt kg 196 254 352
Beskyttelsesklasse IP X2 X2 X2
2.1 Dimensioner
Dimensionerne for CDS 80/100/200 fremgår af afsnit 11 ”Målskitser”.
Nedenstående dimensioner er gældende for kanaltilslutning – se også afsnit 11.
CDS 80 CDS 100 CDS 200
Kanaltilslutning, indsugning mm 595 x 595 695 x 695 815 x 815
Kanaltilslutning, udblæsning mm 265 x 235 332 x 294 332 x 294
3. Opstilling af affugteren
3.1 Placering
Ved opstilling skal man være opmærksom på, at affugteren står vandret for at sikre, at kondensvandet løber fra
drypbakken.
OBS! Der skal være min. 60 cm fri plads på
højre side af affugteren for at sikre fri
adgang for servicering af affugteren.

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3.2 Afløb for kondensvand
Afløbet for kondensvandet er placeret på højre side af affugteren. Affugteren er forsynet med en afløbsstuds for
tilslutning af en 32 mm fast rørinstallation, som føres til gulvafløb eller opsamlingsbeholder.
Det er vigtigt, at afløbet fra affugteren har et fald væk fra affugteren på mindst 2%, da vandet ellers kan løbe over i
drypbakken.
4. Elektrisk tilslutning
Strømforsyningskablet til affugteren føres ind enten via dækpladen i top eller bagpladen. Kablet ledes gennem
udblæsningsrummet til klemrækken i styringen bag højre betjeningspanel. Tilslutning sker til klemme L1, L2, L3,
N og PE. Strømforsyningen skal ske i henhold til typeskiltet. El-diagram over affugteren findes på side 39.
Klemrække i styringen bag højre betjeningspanel
4.1 Indikationer på betjeningspanelet
Affugterens venstre og højre betjeningspanel indikerer følgende driftstilstande.
OBS! De lokale forskrifter for elektriske
installationer skal overholdes.

6
Venstre betjeningspanel
Dråbe:
Kontrollampe (grøn) Kontrollampen lyser, når kompressoren er aktiveret
Aut Affugtningen styres af en tilsluttet hygrostat. Kompressor og hovedventilator er i drift
0 Affugtningen er afbrudt – kompressoren er ikke i drift
Man Kontinuerlig affugtning. Kompressor og hovedventilator er i drift.
Ventilator:
Kontrollampe (grøn) Kontrollampen lyser, når ventilatoren er aktiveret
0 Ventilatoren er aktiveret, når kompressoren er i drift
1 Kontinuerlig ventilation
Bål:
Kontrollampe (grøn) Kontrollampen lyser, når el-varmelegemet er aktiveret (Tilbehør)
0 El-varmelegemet er afbrudt
1 El-varmelegemet er aktiveret og styres af en tilsluttet termostat
Højre betjeningspanel
Kontrollamper

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Timetæller Tæller de timer kompressoren er i drift
Lyn (grøn kontrollampe) Indikerer at strømmen er tilsluttet til styringen, og affugteren er klar til drift
Trekant (rød kontrollampe) Lyser rødt når affugteren er afbrudt via LP, HP eller termorelæ
Hovedafbryder Afbryder strømforsyningen til affugteren samt til el-varmelegemet, hvis dette er
monteret
På betjeningspanelets midterste del findes reset for termorelæ til kompressoren.
4.2 Tilslutning af hygrostat
Hvis man ønsker at opretholde en bestemt relativ luftfugtighed i rummet, skal der tilsluttes en hygrostat (tilbehør)
til klemmerne 1 og 2 i klemrækken under tilslutningen for strømforsyningen – højre betjeningspanel.
Hygrostaten bør placeres i god afstand fra affugteren, så den tørre udblæsningsluft ikke påvirker hygrostatens
funktion. Ligeledes bør hygrostaten placeres således, at den ikke udsættes for direkte sollys.
Hygrostatudgangen er 24 V.
Ved brug af en hygrostat skal omskifteren (Dråbe) på venstre betjeningspanel stilles i position AUT.
4.3 Tilslutning af termostat
Hvis affugteren installeres med et elektrisk varmelegeme (tilbehør), kan en termostat til styring af varmen tilsluttes
affugteren (tilbehør). Termostaten tilsluttes klemmerne 3 og 4 i klemrækken under tilslutningen for
strømforsyningen – højre betjeningspanel.
Termostaten bør placeres i god afstand fra affugteren, så den varme udblæsningsluft ikke påvirker termostatens
funktion. Ligeledes bør termostaten placeres, således at den ikke udsættes for direkte sollys.
Termostatudgangen er 24 V.
Ved brug af en termostat skal omskifteren (Bål) på venstre betjeningspanel stilles i position 1.
5. Drift
Når affugteren er tilsluttet strømforsyning lyser den grønne kontrollampe (Lyn) på højre side af betjeningspanelet.
Affugteren er nu klar til drift.
5.1 Affugtning
Affugteren sættes i drift ved at stille omskifteren (Dråbe) i position AUT eller MAN. Kontrollampen (ved
omskifteren med dråbe symbolet) lyser grønt.
I position MAN kører køleanlægget uafbrudt. I position AUT styres køleanlægget af en tilsluttet hygrostat.
Hovedventilator samt kompressor er i drift ved begge indstillinger.

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5.2 Ventilation uden affugtning
Hvis der kun ønskes ventilation uden affugtning stilles omskifteren (Dråben) i position 0 og omskifteren
(Ventilator) i position 1. Kontrollampen (ved omskifteren med ventilator symbolet) lyser grønt.
5.3 Affugtning med tilsluttet el-varmelegeme
Affugteren sættes i drift som beskrevet herover og omskifteren (Bål) stilles i position 1. Kontrollampen (ved
omskifteren med bål symbolet) lyser grønt. Udblæsningstemperaturen styres nu via den tilsluttede termostat.
5.4 Ventilation med tilsluttet el-varmelegeme
Hvis der kun ønskes ventilation med tilsluttet el-varmelegeme stilles omskifteren (Ventilator) i position 1 og
omskifteren (Bål) i position 1. Kontrollampen (ved omskifteren med ventilator symbolet) lyser konstant grønt.
Kontrollampen (ved omskifteren med bål symbolet) lyser grønt, når el-varmelegemet er aktiveret.
6. Elektriske styrefunktioner
Hele styringen af affugteren med alle sikkerheds-, kontrol- samt tænd/slukfunktioner sker via DTR 3003
elektronikken, der er placeret på affugterens front under højre betjeningspanel.
Start af kompressoren er begrænset af en timer på 6 minutter, der starter, når kompressoren tilsluttes. Afbrydes
kompressoren, skal timeren være udløbet, før kompressoren kan starte igen.
Dette betyder også, at man skal vente 6 minutter, fra kompressoren er aktiveret til den kan startes.
Man kan dog undgå denne ventetid, hvis man trykker på TEST knappen på printpladen.
6.1 Arbejdsområde – temperatur
En temperaturføler standser affugteren, hvis rumtemperaturen falder til under 5°C.
Hvis rumtemperaturen stiger til 32-35°C afbrydes affugteren via den indbyggede højtrykspressostat alt afhængig af
den relative fugtighed.
6.2 Afrimning
Ved en rumtemperatur under 20°C begynder fordamperen at fryse til. Fordamperføleren registrerer denne tilisning
og lader affugteren køre i affugtningsmodus i yderligere 44 minutter. Herefter begynder den aktive afrimning, idet
en indbygget firevejsventil aktiveres og leder varm gas igennem fordamperen, som langsomt afrimes. Når
fordamperføleren registrerer, at fordamperen er afrimet, skifter firevejsventilen igen.
6.3 Sikkerhedskredsløb
LP – afbryder affugteren ved et for lavt tryk i kølekredsløbet. Såfremt trykket stiger genindkobles kompressoren
automatisk. LP-pressostaten er placeret internt i affugteren. Kontrollampen (med trekant symbolet) lyser konstant
rødt.

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HP – afbryder affugteren ved et for højt tryk i kølekredsen. Affugteren genindkobles ved manuelt at resette HP-
pressostaten. HP-pressostaten er placeret bag filterristen på affugterens front. Kontrollampen (med trekant
symbolet) lyser konstant rødt.
Termorelæet – afbryder affugteren, hvis temperaturen i kompressoren bliver for høj. Affugteren genindkobles ved
manuelt at resette termorelæet. Termorelæet er placeret på betjeningspanelets midterste del. Kontrollampen (med
trekant symbolet) lyser konstant rødt.
Hvis det elektriske varmelegeme af en eller anden grund ikke afbrydes via termostaten, er der monteret to
sikkerhedstermostater, som afbryder affugteren ved henholdsvis 80°C og 100°C.
7. Service og vedligeholdelse
Affugteren kræver kun lidt vedligeholdelse for problemfri drift. Alle nødvendige sikkerheds- og kontrolfunktioner
er indbyggede. Ventilator med motor samt kompressor er smurt for livstid og kræver ingen speciel vedligeholdelse.
7.1. Rengøring af filter
Indsugningsfilterne (3 stk.) skal rengøres én gang om måned. Filterne sidder i filterriste på forsiden og siderne af
affugteren. Hver filterristen løsnes fra affugteren, hvorpå filteret kan tages ud. Det vaskes i lunkent sæbevand eller
støvsuges grundigt. Herefter sættes filteret og risten på plads på affugterens forside eller sider.
7.2. Rengøring af affugteren
En gang om året skal alle filterristene fjernes, og affugteren efterses indvendigt. Eventuelt støv og snavs fjernes ved
støvsugning. Specielt kondensatoren støvsuges grundigt. Hvis lamelfordamperen er meget snavset, kan den
afvaskes med sæbevand.
8. Fejlfinding
Affugteren fungerer ikke, kontrollampen (med lyn symbolet) lyser ikke grønt:
- Kontroller de eksterne sikringer
- Kontroller om elforsyningen til affugteren er i orden.
Affugteren fungerer ikke, kontrollampen (med lyn symbolet) lyser grøn, kontrollampen (med trekant symbolet)
lyser rødt:
OBS! Før affugteren kan serviceres skal
strømmen afbrydes

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- HP-pressostaten har afbrudt affugteren. Fjern indsugningsfilteret på forsiden af affugteren. Pressostaten befinder
sig til højre på forsiden. Tryk på RESET knappen og sæt filteret på plads igen. Kontroller om der er fri passage
gennem indsugningsristene og udblæsningsventilerne. Kontroller om ventilatoren fungerer. Kontroller om
filterne, fordamperen eller kondensatoren er tilsmudsede.
- Affugteren er afbrudt via kompressorens termorelæ. Reset sker ved at trykke på gummiknappen placeret på
betjeningspanelets midterste del.
Affugteren fungerer ikke, kontrollampen (med lyn symbolet) lyser grønt:
- Kontroller om rumtemperaturen er mellem 5°C og 32°C.
- Kontroller hygrostaten ved at indstille den på en lav relativ fugtighed (10-20%). Etabler eventuelt en bro
mellem klemme 1 og 2.
- Hvis der er indbygget et el-varmelegeme, kan affugteren eventuelt være afbrudt via den indbyggede
sikkerhedstermostat.
Kompressoren fungerer, hoved- og fordamperventilatorer fungerer ikke:
- Højre betjeningspanel åbnes og ventilatorernes sikringer på printpladen kontrolleres.
8.1 Bortskaffelse
Denne affugter indeholder kølemiddel R407C og kompressorolie. Kompressoren skal, i forbindelse med
bortskaffelse, returneres til offentligt godkendt modtagestation.
OBS! Hvis affugteren ikke fungerer fejlfrit skal
den omgående tages ud af drift for at
undgå yderligere beskadigelser.
En servicemontør eller nærmeste
Dantherm forhandler kontaktes.

11
Contents:
1. Description of function...............................................................................................12
2. Technical data...........................................................................................................13
2.1 Dimensions .........................................................................................................13
3. Installation of the unit................................................................................................13
3.1 Positioning...........................................................................................................13
3.2 Condensate outlet...............................................................................................14
4. Electrical connection.................................................................................................14
4.1 Control panel indications.....................................................................................14
4.2 Hygrostat connection ..........................................................................................16
4.3 Thermostat connection........................................................................................16
5. Operation..................................................................................................................16
5.1 Dehumidification..................................................................................................16
5.2 Ventilation without dehumidification....................................................................17
5.3 Dehumidification and heating..............................................................................17
5.4 Ventilation and heating........................................................................................17
6. Electrical control........................................................................................................17
6.1 Temperature working range................................................................................17
6.2 Defrosting............................................................................................................17
6.3 Safety circuit........................................................................................................17
7. Service and maintenance..........................................................................................18
7.1. Cleaning of the filter...........................................................................................18
7.2. Cleaning of the dehumidifier...............................................................................18
8. Faultfinding................................................................................................................18
8.1 Disposal ..............................................................................................................19
9. Cooling circuit............................................................................................................38
10 Wiring diagram..........................................................................................................39
11. Dimension sketches..................................................................................................42
12 Spare parts lists and exploded views........................................................................45

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1. Description of function
The CDS 80/100/200 are working in accordance with the condensation principle. The humid air is drawn into the
unit by a fan. In the evaporator the air is cooled and when its temperature has fallen to below the dew point, the
water vapour condenses into droplets, which are led to a drain. The dry cold air is then passed through the
condenser where it is reheated. As a result of the released evaporator heat and the working energy of the
compressor being turned into heat energy, more heat is returned to the air than was previously extracted. This extra
heat corresponds to an approximate increase in temperature of 5°C. The repeated circulation of air through the unit
reduces the relative humidity, giving very rapid but gentle drying.
Left-hand control panel with
change-over switch for
dehumidification, ventilation
and heating
Condensate outlet
Air inlet through filters
(on 3 sides)
Right-hand control panel
with hour meter, main
swith, failure message
Reset button for the
compressor thermal relay is
located in the central part of
the control panel
Air outlet louvres

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2. Technical data
Model
CDS 80 CDS 100 CDS 200
Working area – temperature °C 5 - 32 5 - 32 5 - 32
Working area - humidity %RH 30 - 100 30 - 100 30 - 100
Air volume m³/h 1600 2800 3000
Power supply V/Hz 3x400/50 3x400/50 3x400/50
Max. ampere consumption without electric
heating element A 5,8 9,1 13,7
Max. power consumption without electric
heating element kW 2,5 3,8 6,4
Max. ampere consumption with electric
heating element A 16,2 19,5 24,1
Max. power consumption with electric
heating element kW 9,7 11,0 13,6
Refrigerant R407C R407C R407C
Quantity of refrigerant kg 2,250 4,300 7,000
Sound level (1 m away from unit) dB(A) 61 63 62
Weight kg 196 236 352
Protection class IP X2 X2 X2
2.1 Dimensions
The dimensions for CDS 80/100/200 are stated in section 11 “Dimension sketches”.
Dimensions for duct connections are stated in the table below – please also refer to section 11.
CDS 80 CDS 100 CDS 200
Duct connection air inlet mm 595 x 595 695 x 695 815 x 815
Duct connection air outlet mm 265 x 235 332 x 294 332 x 294
3. Installation of the unit
3.1. Positioning
When positioning the unit, be sure that the foundation is level to allow condensate water to run away from the drip
tray.
CAUTION! Leave a free space of at least 60 cm
at the right side of the unit to ensure easy access to
carry out service on the dehumidifier

14
3.2 Condensate outlet
The condensate outflow device is located at the right hand side of the unit. The unit is fitted with an outlet stub for
connection of a 32 mm permanent pipe installation, which is led to a floor drain or a container.
It is important that the water pipe has a fall away from the unit of at least 2%, otherwise the water will overflow in
the condensate tray.
4. Electrical connection
Introduce the power supply cable either through the top cover panel or the rear cover panel of the unit. Lead the
cable through the air outlet compartment down to the terminal strip located behind the right-hand control panel.
Connect it to the terminals L1, L2, L3, N and PE. Power is connected to the unit in accordance with the data plate.
Please refer to the wiring diagrams on page 39.
The terminal strip is located behind the control panel at the right hand side of the unit
4.1 Control panel indications
The control panels, located at the left side and the right side of the unit respectively, indicate the following
operation modes.
Caution: Observe local power supply company
regulations!

15
Control lamps
Control panel at the
left-hand side of the unit
Drop:
Control lamp (green) The control lamp lights up when the compressor is in operation
Aut Dehumidification is controlled by a hygrostat. Compressor and main fan are in operation
0 Dehumidification is switched off – the compressor is switched off
Man Continuous dehumidification. Compressor and main fan are in in operation.
Fan:
Control lamp (green) The control lampe lights up when the fan is in operation
0 The fan is in operation when the compressor is in operation
1 Continuous ventilation
Fire:
Control lamp (green) The control lamp lights up when the elektric heating element is active (Accessory)
0 The electric heating element is switched off.
1The electric heating element is active and controlled by a thermostat.
Control panel at the
right-hand side of the unit

16
Hour meter Counts the operating hours of the compressor
Lightning (green control lamp) Indicates that power is on and the unit is operational
Triangle (red control lamp) Lights up in red when the dehumidifier is switched off by LP, HP or
thermal relay
Main switch Switches off power supply to the unit and the electric heating element, if
any.
Reset button for compressor thermal relay is located in the central part of the control panel.
4.2 Hygrostat connection
If you want to maintain a certain relative humidity in the room, a hygrostat (accessory) is required. The hygrostat is
connected to the terminals 1 and 2 of the terminal strip located underneath the power supply connection – the right-
hand control panel.
The hygrostat should be installed as far away from the unit as possible to ensure the dehumidifier does not
influence the hygrostat with its dry air. Care should be taken to avoid installation where the hygrostat is exposed to
direct sunlight. The hygrostat output is 24 V.
The change-over switch (Drop) on the left-hand control panel must be set to pos. AUT when a hygrostat is used.
4.3 Thermostat connection
CDS units delivered with an in-built electric heating element may require a thermostat (accessory) to control the
heat. The thermostat is connected to terminals 3 and 4 of the terminal strip located underneath the power supply
connection – the right-hand control panel.
The thermostat must be installed at some distance from the dehumidifier, to prevent warm air from the
dehumidifier influencing the function of the thermostat. Care should also be taken to avoid installation where it is
exposed to direct sunlight. The thermostat output is 24 V.
The change-over switch (Fire) on the left-hand control panel must be set to pos. 1 when a thermostat is used.
5. Operation
When the dehumidifier has been connected to electricity the green control lamp (Lightning) at the right side of the
control panel lights up. The dehumidifier can now be put into service.
5.1 Dehumidification
The dehumidifier is switched on by setting the change-over switch (Drop) to pos. AUT or MAN. The control lamp
next to the DROP symbol lights up in green.
In pos. MAN the cooling plant will be working continuously. In pos. AUT the cooling plant is controlled by a
hygrostat. No matter whether the switch is in pos. MAN or AUT, both main fan and compressor will be running.

17
5.2 Ventilation without dehumidification
If only ventilation without dehumidification is required, the change-over switch symbolized by a drop is set to pos.
0 and the change-over switch symbolized by a fan is set to pos. 1. The control lamp (next to the change-over
switch symbolized by a fan) lights up in green.
5.3 Dehumidification and heating (electric heating element connected)
The unit is started as described above and the change-over switch symbolized by a fire is set to pos. 1. The control
lamp lights up in green. The air outlet temperature is now controlled by the thermostat.
5.4 Ventilation and heating (electric heating element connected)
If only ventilation and heating is required, the change-over switch symbolized by a fan is set to pos. 1 and the
change-over switch symbolized by a fire is set to pos. 1. The control lamp next to the change-over switch
symbolized by a fan lights up permanently in green. The control lamp next to the change-over switch symbolized
by a fire lights up in green, when the electric heating element is active.
6. Electric control
The entire control system of the unit with all its safety, control and switching functions is provided by the printed
circuit board type DTR 3003, which is located behind the right-hand control panel of the unit.
The number of compressor startings is limited by a 6 minutes timer, which starts up when switching on the
compressor. The timer must have come to an end before the compressor can be switched on again.
This also means that the compressor cannot be started until 6 minutes after it has been actuated.
However, this period of time can be overcome by pressing the TEST button on the printed circuit board.
6.1 Temperature working range
A temperature sensor stops the unit when the temperature falls to less than 5°C. The built-in high pressure
controller stops the unit when the temperature reaches a level between 32°C and 35°C, dependent on the relative
humidity.
6.2 Defrosting
At temperatures under 20°C the evaporator will start to ice up. The evaporator sensor registers the icing up and
after 44 minutes in dehumidification mode the active defrosting begins. A four-way valve is activated letting warm
gas being blown across the evaporator whereby the ice on the evaporator is melted. When the evaporator sensor
registers that there is no more ice on the evaporator, the four-way-valve switches over again.
6.3 Safety circuit
LP – low pressure controller - switches off the dehumidifier, if the pressure in the cooling circuit gets too low. The
compressor is switched automatically on again if the pressure increases. The control lamp (triangle) lights up
constantly in red.

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HP – high pressure controller – switches off the dehumidifier, if the pressure in the cooling circuit gets too high.
The dehumidifier is restarted by manually resetting the HP controller. The HP controller is located behind the filter
grill at the front of the dehumidifier. The control lamp (triangle) lights up constantly in red.
Thermal relay – switches off the dehumidifier if the temperature in the compressor gets too high. The dehumidifier
is switched on again by manually resetting the thermal relay. The thermal relay is located on the central part of the
control panel. The control lamp (triangle) lights up constantly in red.
If for some reason the electric heating element is not switched off by the thermostat, two safety thermostats are
mounted which will switch off the unit at temperatures of 80°C and 100°C respectively.
7. Service and maintenance
The dehumidifier requires very little attention for trouble free running. All the necessary safety and control
functions have been built in. The fan with motor and the compressor have permanent lubrication and require no
particular maintenance.
7.1. Cleaning of the filter
The air inlet filters (3 pcs.) have to be cleaned at least once a month. These filters are sitting in filter grills on the
front and the sides of the dehumidifier. Each filter grill can be loosened from the dehumidifier and the filter be
taken out for cleaning. It can either be rinsed in tepid soapy water or cleaned with a vacuum cleaner.
After cleaning, reinstall the filters and the filter grills on the front and the sides of the dehumidifier.
7.2. Cleaning the dehumidifier
Once a year all filter grills should be removed in order to check the inside of the dehumidifier. Dirt and dust is
removed by vacuum cleaning. The condenser in particular should be thoroughly vacuumed. If the finned type
evaporator is badly soiled, it may be washed in tepid soapy water.
8. Faultfinding
Dehumidifier does not work, control lamp (with lightning symbol) does not light up in green:
- Check the external fuses.
- Check that the power supply to the unit is OK.
NOTE! Unplug the mains electricity cable before
opening the unit!

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Dehumidifier does not work, control lamp (with lightning symbol) lights up in green, control lamp (with triangle
symbol) lights up in red:
- The dehumidifier has been switched off by the high pressure controller. Remove the front air inlet filter of the
unit. The HP pressostat is located at the front right-hand side. Press the RESET button and put the filter back in
place again. Check that air inlet and air outlet louvres are free. Check that the fan is running. Check filters,
evaporator and condenser for dirt.
- The compressor thermal relay has switched off the unit. Reset by pushing the rubber button on the central part
of the control panel.
The dehumidifier does not work, the control lamp (with lightning symbol) lights up in green:
- Check if the room temperature is higher than 5°C and lower than 32°C.
- Check the hygrostat by setting it to a low relative humidity (10-20%). You can also check it by establishing a
bridge between terminal 1 and 2.
- If the unit is supplied with an electric heating element, the built-in safety thermostat may have switched the unit
off.
The compressor functions, main fan and evaporator fan do not function:
- Open the right-hand control panel and check the fan fuses on the printed circuit board.
8.1 Disposal
This unit contains refrigerant type R407C and compressor oil. When scrapping the unit, bring the compressor to a
place of discharge which is approved by the authorities.
NOTE! If you do not find the reason for the
fault, switch off the unit immediately in
order to avoid further damage.
Contact a service engineer or the nearest
DANTHERM Dealer.