Question about Dehumidifiers
Dear Mr. Kolb, I'm an American living on an island off Hong Kong. I'm a fairly skilled mechanic with at least some tools here. My Delonghi CF08E dehumidifier (manufactured 2005 and sold as a Gree) has worked fine the last several years, but recently the compressor won't engage, though the fan runs OK. From what I've been able to see online, it may be an issue with the anti-frost or humidity sensor, or with a possible fuse serving the compressor only. I'd like to get inside to see what might be seen, but need to find a split-blade screwdriver head to remove the middle pair of exterior screws front and back, obviously a manufacturer's anti-tamper device to keep the unwary/inexperienced from disassembly. No service people will come to the island, even if I wanted them to, but I'm perfectly capable of diagnosing and repairing at least some problems. It would be helpful if I could see or download a genuine service manual online, one with a schematic and parts blowup. No luck finding this so far, and calling service departments here in HK is hopeless. Unlike westerners, esp. Americans and Australians, very few Chinese do any DIY themselves, nor are the service folks helpful even if they happen to speak limited English. I'd be grateful for any suggestions. Again, the unit worked perfectly until just recently, with no audible compressor symptoms, and normal cycling/rates of condensation. Ambient temp has been 60-70 F, 15-21 C, high enough for the compressor to kick on. Thus I think juice is simply not getting to the compressor, the fault likely being a sensor or fuse in between. Sometimes of course fuses simply fail, or, in HK's long, extremely humid summers, contact points oxidize. I'll be back in the states for several weeks next month, and can probably get most parts there far more easily than here. In the meantime, I'd like a service manual to help take the unit apart without inadvertently breaking anything. Many thanks!!--George
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
use a jumper cord and go directly to the compressor to see if it will run. if it don't run, open up the motor box and see if there is a klixon overload inside. this should be normally closed. if it isn't replace it. the klixon is a thermal overload cutout. it usually trips because of high winding temperatures and protects the motor inside. the compressor is a hermetically sealed unit. no, or little freon will cause the motor to overheat.
Posted on Aug 21, 2007
First ! you are trying to use this dehum in cold weather conditions. this time of the year there is little humidity in the air. best conditions for the dehum to work will be when the temp. is 65 degrees or high, and the humidity is 60% or higher. if you don't trust what I said then take it to sears to be checked out.
Posted on Feb 05, 2008
Most dehumidifiers these days have a built in defrost control, which turns the compressor off when the coils frost up while the fan continues to blow to help melt the frost off, so if it is frosting you may need a new defrost control, but first check the following: If your model has an air filter, clean it, as restriction of air flow will contribute to icing. Try to move the unit to a warmer location. Usually the best way to do this is to get it above the floor as far as possible, as the air temp is warmer closer to the ceiling than it is at the floor. Make sure there is plenty of room for air to circulate. (don't push it against a wall)
Posted on Sep 15, 2008
I have no experience of your particular machine but I have some
experience of my Wood's DS-15, another fine machine of the compressor
type that is built to last. They should be rather similar in design.
My first thought when I read your problem description is that you have a severe buildup of dust inside the machine. On the Wood's, you loosen the front grill and behind it you will see the fan, behind the fan is the condenser pack, and then you get to the evaporator coils that are visible from the back of the machine.
Maybe the configuration is slightly different on your machine but they are built very simple these machines, easy to see what they need in order to work as designed and you already know the most central and expensive parts seem ok.
I had some problems with low efficiency on the unit after six years daily service in a laundry room for drying clothes, took it apart and couldn't believe the amount of dust that was packed into the fine fins of the condenser on its back side! Also extremely much dust on most components like the fan.
I just took it outside and blew it clean from the front side with compressed air, problem solved and machine performance went back up to where it was when new!
I would imagine after a few more years of dust buildup inside, at one point or another the dust will reach the fan and prevent it from spinning. It is also possible of course that the fan motor is shot but I'd start with a really good cleaning.
If that doesn't help I'd continue with the multimeter see if the humidistat gives power to the fan and compressor when it should, if the fan actually spins when powered, if the switches work. It should be quite easy to track down the reason the fan doesn't spin, IMO. I believe you can buy replacement humidistats and motors if they turn out to be faulty.
Posted on May 26, 2009
SOURCE: Dehumidifier Freezing up
Your dehumidifiers are LOW on freon. Over time, small leaks will occur and the coils will freeze. Take your units to a qualified repair shop (central air, or furnace) and recharge the freon.
Posted on Jun 05, 2009
Tips for a great answer:
Sep 03, 2012 | Comfort-Aire BHD-301 Dehumidifier
May 09, 2012 | Kenmore Dehumidifiers
Jun 24, 2011 | Kenmore Dehumidifiers
Jun 04, 2011 | Fedders A7DH45B2A Dehumidifier
Jun 04, 2011 | Danby DDR451 Dehumidifier
May 22, 2011 | Kenmore 54501 Dehumidifier
May 22, 2011 | Goldstar DH4010B Dehumidifier
May 11, 2011 | Maytag M3DH30B2A Dehumidifier
May 10, 2011 | LG LHD45EL Dehumidifier
142 people viewed this question
Usually answered in minutes!