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Posted on Apr 16, 2017

LG LD40 Dehumidifier - rapid on/off cycling

Dehumidifer fan and compressor both cycle on and off together every 60 seconds or so when humidistat is set to 5. When set to MAX (10) the fan runs continuously and the compressor cycles on and off continuously - at 10 the unit is ALWAYS pulling moisture. In other words, if you want to keep it at 40%, you must either put up with the rapid cycling OR leave it on constantly and watch the humidity go down to 35% and then manually shut it off. Made in China, fairly noisy, but seems durable enough. Can I fix the ON/OFF cycling problem? It has Always done that, maybe it's a built-in design problem...?

5 Related Answers

Anonymous

  • 121 Answers
  • Posted on Jul 08, 2008

SOURCE: Unit runs a lot. Doesn't condense much water. Sometimes fan runs alone, sometimes compressor runs alone.

You may also want to check the coils and make sure they do not have dirt or dust on them. If they are clean you may have an issue with the refrigerant level which will cause the coils not to cool properly. For that you will want to contact LG. There could be an issue with the compressor also. LG backs alot of their models with a 5 year warranty. Contact them and let them know about your issue. Make sure you still have your reciept. Here is their contact number:

1 (800) 793-8896

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superdave1

  • 156 Answers
  • Posted on Jun 28, 2009

SOURCE: lg dehumidifier won't collect water after running for long time

Sounds like it needs to be recharged.

Anonymous

  • 1 Answer
  • Posted on Jul 20, 2009

SOURCE: Danby Dehumidifier

I dropped the water bucket by accident on the dehumidifier, and I have the same problem. Here what I found :
First, remove the water bucket and find the circuit diagram, it is very useful.

E1 code is related to the room humidity sensor, E2 code is related to the room temperature sensor and E3 code is related to the safety thermistor sensor. If you have one of these error code displayed, you will probably have to replace the sensor.

The humidity and temp sensors are located on the same board. To access it, remove the water bucket and you will see the 2 screws holding the front panel. Remove the screws, then gently prayed the front panel. Be careful, there is two plastic clip on the top of the panel and they are really easy to break. The board is located at the top right, under the cover. The safety thermistor is located on a pipe on the right side of the dehumidifier.

Anonymous

  • 867 Answers
  • Posted on Aug 21, 2009

SOURCE: kenmore 580.51650000 dehumidifier: compressor

fan should turn off when compressor not running, the relay switch is stuck open for the fan, and probably needs replacing, but even if it always runs there is no harm and it only uses like 15 watts

Anonymous

  • 1 Answer
  • Posted on Apr 24, 2010

SOURCE: DeLonghi DEN500P Dehumidifier Humidistat

I have the delonghi DEN500P and the unit runs but does not condense any moisture? The appropriate buttons have been set to bring the unit humidity setting well below humidity in room

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I have a Goldstar GHD30 dehumidifer that I bought used last week. It's pulling 20-30 pints of water each day out of my basement so it appears to be working. The compressor only runs for 1-2 minutes at a...

yes cycles should be longer either that or the unit is keeping close to desired humidity. Also the unit is under sized 30 pint is for 400sqft. or 20 by 20 room. humidity should be 30/50 percent check your level desired room temp is 70 degrees but its a basemnt 60 works.
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Not collecting water,

IF THE COMPRESSOR QUITS IT WILL NOT PRODUCE MOISTURE COULD BE LOW ON GAS,BAD HUMIDISTAT,DIRTY CONDENSOR CAUSING UNIT TO OVERHEAT SHOULD SEEK TECHNICIAN
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Year 2005 cycling fan and compressor

Your unit is probably operating in defrost mode. When you use a dehumidifier in a cold room, the condensing coils can freeze water. The unit senses this and thus stops the compressor until the water frozen on the coils melts. Then it resumes its cycle. This is a problem you will have during the winter months. It makes the operation of the unit inefficient, but this is otherwise normal behavior.
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Unit runs a lot. Doesn't condense much water. Sometimes fan runs alone, sometimes compressor runs alone.

You may also want to check the coils and make sure they do not have dirt or dust on them. If they are clean you may have an issue with the refrigerant level which will cause the coils not to cool properly. For that you will want to contact LG. There could be an issue with the compressor also. LG backs alot of their models with a 5 year warranty. Contact them and let them know about your issue. Make sure you still have your reciept. Here is their contact number:

1 (800) 793-8896
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Rapid cycling

The has been no solution offered, just as there was no solution for the individual who had a similar problem and posted in Nov 2006. The only offer is to purchase a solution which I have determined is the only function of this website!
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Really thick ice on back of dehumidifier

It is now frozen because the humidistat, which controls the on/off cycle, is starting to age and forgetting to turn off the dehumidifier. Try removing the humidistat and, using compressed air, blow it out thoroughly of any dust. Then spray the rotary control area, including electrical parts, with WD-40. Then, blow dry again with the compressor and try again.
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