Rank: Guru
Rating: 91%, 47 votes
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.
Good luck!
Comments:
May 26, 2009
- PS. I wouldn't think too hard on the question you had since there is also a defrost cycle involved, here the compressor is not powered but the fan is, and if it doesn't spin all you would hear would be that click.
Besides a really good design would prevent the compressor from being switched on again right after it has been shut off, this is not good for the compressor.
May 27, 2009
- Cliff, it seems like you tracked down the problem! Congrats! You say your dehumidifier was made by Woods, why am I not surprised... :) Like you I'm very attracted to high quality designs and unfortunately they become harder to find nowadays. Really high quality stuff is made up of high quality components and they cost money to make.
I agree $75 for a new motor seems a bit stiff but I'd not hesitate spending that on my Woods in ten years or so to make it run for another couple of decades which I'm certain it will do. Total cost of ownership will still be unbeatable considering the "competition", the low quality offerings you mentioned ending up in landfills.
My machine is running almost constantly to keep the basement dry despite all clothes that are drying there all the time, a very energy efficient solution since it actually produces more heat energy than it takes from the jack. Sort of a heat pump in a way.
Good luck with your fine machine!