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9.Trouble shooting 

 

Assign that dehumidifier a putative defect on, please, first check the following points. 
If this should provide no relief, please contact your technical consultant. 
 

1)The dehumidifier shows a bad or no drying capacity  

-  The humidity is lower than 40% r.h. or the temperature in that room is lower than  

+15°C. The using of the dryer is uneconomical in the case of these conditions. It is 
recommended to disconnect the dryer. 

Tipp

: Put the built-in hygrostat (refer to 5.5)  

   on an attainable value (e.g. approx. 50%r.F.), with it the dryer punctually may  
   switch off. 
-  The air filter (refer to 5.1 – Pos.7) is soiled.  The dryer does not receive air 

sufficiently. Clean the filter and/or install a new one. A soiled air filter can in the 
long run lead to disadvantages at the dryer. 

Tipp

: Control the filter regularly. 

 
2) 

The compressor of the dehumidifier does not work

-  The dryer has just being switched on (perhaps because the humidity increased). 

In that case, only the fan starts first. After 3 Minutes the compressor will also start. 

-  The dryer is in defrost mode (refer to 5.8). In that case, the fan works and the 

green neon in the operation panel (refer to 5.4 – Pos.3) lights up. After 10 Minutes 
the dryer starts complete working again. 

 
3) 

The complete dryer is out of operation. Fan and compressor does not run

-  Is the unit supplied with voltage? The green neon “operation” (refer to 5.4 – Pos1) 

must light up. Check the main cable, an additional cable, the socket and the main  
fuse.   

-  The humidity value adjusted at the hygrostat is achieved. The unit will start again 

after exceeding the adjusted humidity.  

-  Water collecting bucket is full: The red neon lights up (refer to  5.4 – Pos. 4). 

Empty the water bucket and put it back into the unit. (refer to 5.6) 

 
4) 

Strong icing up at the evaporator. 

-  The ambient temperature is to low (< +15°C). Put the dryer into a room with min. 

+15°C room temperature and wait until complete ice is defrosted. Switch on the 
unit again (in that room with min. +15°C) and let work for approx 3 hours. If there 
is icing up again, please contact your dealer. Otherwise make sure that the unit is 
only been used in rooms with more than +15°C. Also the storage of the 
dehumidifier at inadmissible temperature conditions can lead to damages / 
problems while immediate switch-on. 

 
5) 

The humidity adjusted at the hygrostat does not become achieved and/or the 

device does not switch off automatic.

- Is the hygrostat adjusted on a value lower than 40 – 45% r.h.? Humidity values  

with a minimum of 40 % - 45 % r.h. can be achieved with a condensation dryer. 
Adjust the hygrostat to a reachable value. 

-  Is the unit with enough capacity for your application? The air changing, number of 

the persons in the room and open water surfaces decide on the humidity burden 
in the room. Let calculate the necessary capacity from your dealer 

-  Is there a lot of water in the walls or the floor? In that case the dryer needs some 

time to remove that water and to achieve an acceptable humidity in that room. 

 

 

 

Summary of Contents for DH 18

Page 1: ...page 1 of 14 Instruction manual _____________________________________ Dehumidifier DH 18 _____________________________________ Valid 01 2011...

Page 2: ...5 6 5 2 Electrical connection 6 5 3 Putting into operation 6 7 5 4 Operation panel 7 5 5 Hygrostat control 7 8 5 6 Air flow 8 5 7 Condensate outlet 9 5 8 Automatic defrosting 10 6 Operating condition...

Page 3: ...ble to send the device safe for guarantee repair In order to save space you open simply the adhesive tape with a knife and you fold the carton 2 Mode of functioning The DH air dryer is built particula...

Page 4: ...rrespondingly and consider this operating manual precisely Using as directed The condensation dryers are intended for the drying of air with atmospheric pressure Risk by accessory Hoses for condensate...

Page 5: ...e air filter must at least conduct 1 meter Before every local alternation of the device switch off the device at the on off switch pull the power plug from the socket and empty the water tank The air...

Page 6: ...technical data of the appliance should be compared to the conditions prevailing in the room of installation 5 3 Putting into operation ATTENTION Before putting the air dryer into operation the instruc...

Page 7: ...perating Voltage is connected 2 chart with neons Shows the approx Humidity of the ambient air in r h 3 neon green Dryer is in defrost mode fan is still working compressor does not work 4 neon red tank...

Page 8: ...eter Please consider Humidity values of a minimum of 40 45 r h can be achieved with a condensation dryer An adsorption dryer is to be employed if lower values are required For this purpose ask your te...

Page 9: ...f the tank and switches on automatically if the empty tank is placed back into the equipment Make sure that the carrying handle is folded correctly back into the tank Optionally a hose 12 mm can be in...

Page 10: ...tive humidity from 40 to 95 r h The use in rooms with higher temperatures 32 C leads to disadvantages at the compressor The use in rooms with lower temperatures 15 C is ineffective and can lead to ici...

Page 11: ...350 Watt 7 2 l 24h at 20 C 60 r h 300 Watt 8 Service Maintenance ATTENTION When performing any repair or maintenance the general safety rules and provisions must be adhered to In order to guarantee a...

Page 12: ...5 4 Pos1 must light up Check the main cable an additional cable the socket and the main fuse The humidity value adjusted at the hygrostat is achieved The unit will start again after exceeding the adj...

Page 13: ...AL air dryers we recommend get in touch with your supplier The producer AERIAL GmbH you reach under 0049 40 526879 0 or www aerial de 10 Disposal Please do not dispose this unit with the domestic wast...

Page 14: ...afety of Machinery EN 50081 1 92 Electromagnetic Compatibility EMC Basic Specification Emitted Interference EN 50082 1 97 Electromagnetic Compatibility EMC Basic Specification Emitted Interference EN...

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