Question about Haier HDN455 Dehumidifier

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Totally shut down, no lights , nothing. It just quit as if someone pulled the plug. Is there a reset switch or is it now a piece of junk?

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It either needs a new fuse or a new ZD2 diode. Both fixes will require you to take the unit apart. The fuse is easy to replace, but the diode will require soldering. Check out ...

Posted on May 01, 2010



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Posted on Jan 02, 2017


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Haire model HD308 dehumidifier quit shutting off automatically when full?

usually the float is stuck. remove the resevoir and check the upper inside of the machine for the float. if you can flop it up and down easily, it's the switch attached to it that needs to be replaced.

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Meaco dd8l fault light.

Not long after my unit ran out of warranty it developed a fault. Less then a minute of being turned on the double fan light would begin to flash and the unit would shut down. The filters were regularly maintained as recommended my the manufacturer. I am not one for just throwing it out and buying a new one, so I stripped it down.
i noticed the dissident wheel was not turning so I removed the motor, stripped it down and re greased the plastic gears within. Then I noticed the dissident wheel itself was catching on something (motor still removed) when I manually turned it. After taking the dissident wheel off I could clearly see the plastic housing behind the wheel was melted and snagging the metal 'spokes' on the dissident wheel. The area is located directly behind the heater unit.
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on Jan 01, 2017 | Dehumidifiers

1 Answer

Does the Fan on a Haier HD456E always run,

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Apr 16, 2012 | Haier HD456 Dehumidifier

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Drained water from unit and unit still shuts off with lights still flashing.

pull plug wait a few minutes lite comes from float switch or wet switch make sure its not hung up or wet.

Jul 03, 2011 | Sharp CV-P10MC Dehumidifier

1 Answer

Unit was working fine and simply quit. There is power to the unit however it does not turn on there are no lights . The resevoir is not full but the unit does not work

It may simply need to be reset. Turn the Master ON/OFF switch to OFF. Unplug the unit and wait 12 - 15 minutes before plugging it back in. Once its plugged in, turn ON the Master ON/OFF switch and set your controls. If it's not working then .. check the position of the water collection bucket. It may not be tripping the safety switch. Also be sure that the unit is sitting on a level surface.

Hope this helped you to troubleshoot the problem.

Mar 30, 2011 | Haier HDN655E Dehumidifier

1 Answer


When you powered down the unit, did you just turn if OFF using the controls on the unit Or did you unplug it entirely? If you didn't unplug it, it won't reset itself. Leave it unplugged for at least 30 minutes. As far as the blinking bucket full light is concerned ... It's possible that the bucket is slightly out of kilter and is only making partial contact with the safety switch. Especially if it's sitting on uneven soil or when the bucket get partially full the weight of the bucket is pulling it out of kilter because it's sitting on soil, rather than a hard floor. If nothing else, place it on a 1/2" piece of plywood or OSB and level it.

To be totally candid, I have some concerns about leaving a dehumidifier running, unattended in the crawl space of a house. There's to many things that could go wrong that would have disastrous results.

Mar 10, 2011 | Comfort-Aire BHD-651 Dehumidifier

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Runs 5 min then quits

whomever suggested clipping the white wires to the dial was right on and saved me from spending another 170 bucks Thank you!!!

Jun 10, 2008 | Goldstar DH304 Dehumidifier

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Haier HDN305 Dehumidifier

The Comfort-Aire crapped out again! We started the season with a little 17-pint Sears, but it wasn't cutting the mustard getting the accumulated moisture out of the cellar, so we fired up the Comfort-Aire 65-pint machine. It got the humidity down to 50% pronto, and kept it there for the better part of a week when all of a sudden it quit. Died! Nothing! Not a glimmer in the control panel, and pushing the buttons did absolutely nothing. Unplugging it and plugging it in again produced a faint "chirp" but that was all. Naturally, the thing is weeks out of warranty. Without the warranty, the nearest service place wants a $60 "consultation fee" just to look at it, so I decided to see if I could fix it myself before seeking professional aid.

After getting an exploaded view of the machine from the web, I removed the collection bucket, the filter, and the two screws from under the plastic front cover. In addition to the two screws, the cover is held by little tabs that fit into notches in the steel sides. To get the plastic cover off, I slid a wooden popsicle stick under the plastic, thus stretching the plastic enough to get the tabs out of their holes without scratchng the unit.
The front cover is tethered to the unit by a cable attached to a circuit board which forms the back of the push-button control panel. On one side of this circuit board there is a row of 14 soldered connections. They are very close together, and any conductive contaminent that gathers between them is guaranteed to short them out. That's apparently what happened to mine, for scraping between them with a toothpick, and cleaning them with a toothbrush
brought the unit back to life again. That's all it took to repair my Comfort-Aire. The plastic cover snaps back
in place easily.

Jun 07, 2008 | Dehumidifiers

2 Answers

No lights on control panel. Plug is powered.

Independent of the bucket switch, the control panel should light when the unit is plugged into a powered receptacle and the on/off switch is depressed. The problem is likely the 12 amp. fuse located inside of the unit.

Sep 19, 2006 | Haier HDN655E Dehumidifier

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