Question about Haier HDN305 Dehumidifier

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Dehumidifier won't run

Haier model HDN305. Unit won't run. I tested the fuse on the circuit board and it was good. I tested the tank full switch, fan switch, humidifier switch and they all tested good. I by passed the 110vac to the fan and it works. I then by passed 110vac to the compressor and it ran fine. I think the problem may be in the main circuit board but I don't have a schematic to test it. Is it worth buy a new circuit board? or could there be something else I missed.
Ken

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After all that testing you have diagnosed the problem. It is the main circuit board. So there is not reason to do any more test. I would just get a new control board and off you go

Posted on Apr 21, 2009

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Posted on Jan 02, 2017

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Hauier dehumidifier HDN305 suddenly won't turn on. No motor goes on and no red or green lights go on either. It's properly plugged in to a functioning electrical outlet which has a functioning...


You have already checked everything I would have suggested, so the only other thing I can think of is the temperature in the room, may be affecting it. If the ambient room temperature is above 112 degrees or below 32 degrees, the unit will shut OFF and not restart, until the temperature is within that range.
If you continue to have problems starting the unit, contact Haier America Customer Support 877-377-3639.

Hope this provided some help to you.

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There are many reasons why a dehumidifier will not work or collect water.


Here is a tip that I wrote to help people to figure out what is going wrong with their dehumidifier

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Fan running


Hi,
There are many reasons for a dehumidifier2_bing.gif to not work or collect water.
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http://www.fixya.com/support/r4662409-dehumidifier_running_but_no_water_in

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I would liket to obtain an owner's manual as I have lost mine. Model HDN305


I have spoken with the folks at Haier. They have all current manuals on line for immediate down load. If yours is "classic" (read OBSOLETE), send em a e-mail and they will send you whaat you need.

I received great customer srvice from them.

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We all appear to be in the same mess --Thanx Haier
This product says its Amana, but rest assured it is an Haier
The problem is most likely with the engineering design of the board. Im not an electrical engineer so be careful litning to me to closely :) There is only a half bridge rectifier on this board and 2 zener diodes that clamp down on the voltage. My guess on yours is the Zeners have been shorted and no longer clamping voltage down to aroun 24 volts for the low side of the board. I spoke with Haier and they have no schematics that state the zener specifications. They also said there was a 6 month backorder on ordering a new board. Oh and by the way if you want to order a new board and wait 6 months for the backorder it would cost you 75.00. All this jsut to repeat the problem again, because of bad design. O well ----- I wish products were not made better, so I wouldnt have to fill guilty about putting this in the landfills.

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Haier HDN305 Dehumidifier


Solution #3 posted on Apr 03, 2008 0%20stars_w.png
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agaver
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Hi,
Thanks qrx1llb3 for the help!
After carefully removing the plastic covers (yes, u need to remove both, I removed first the back one then the front one by pulling up, then disconnect the cable that joins the panel on the front cover with the electronic board on the upper right area) I found the electronic board with the blown up fuse. My was under a blue plastic cover. I'll try to replace it and see what happens! thanks for the help! :)

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