Some Common Dehumidifier Problems and Troubleshooting Tips

Last Updated on June 4, 2024 by Justin Williams

If only it was a perfect world, then everyone would not have trouble with their dehumidifiers and their homes will always be regulated to the perfect humidity levels. But it isn’t and the owners of dehumidifiers experience trouble even when they thought they bought the perfect machine.

Unfortunately, these electrical devices do come with flaws. What follows are some problems and the troubleshooting guide to solve them.

Dehumidifier Trouble and Solutions

Dehumidifier Troubeshooting
  1. 1
    Noise of the machine – the dehumidifier has a fan inside attached with other internal functioning dehumidifier parts which runs at the time of functioning of dehumidifier. The fan regulation causes loud noise, despite the covered body it causes noise as well as vibration which troubles to be a problem. To avoid the noise problem it’s better to place the dehumidifier in a closed cabinet with a strong base and check the fan motor, as this can also be the issue behind the noise.
  2. 2
    Leakage in the tank – the tank of water gets filled with water that is collected from the humid room temperature, sometimes the tank filled with water shows the problem of leakage due to which the motor of the appliance does not work and the atmosphere is not affected so well. Clean the tank on regular intervals and drain out the water properly so that leakage problem is looked after and best results are obtained.
  3. 3
    Coils freeze – this is one of the most common problems faced with the dehumidifiers, the dependence of its working is high on the coils inbuilt, due to the continuous cool air exertion and humidity contraction the evaporator coils gets freeze or a layer of ice is made on it which does not allow it to give further results. If the appliance is placed on the floor or lower level then this is also a reason for the freezing of coils as the temperature down is high in comparison to the air level, so it’s an easy tip that keeps it on a higher surface and also cleans the coils timely for good working.
  4. 4
    Fan does not work smoothly – the fans give problems often as the fan continuously works when the appliance is plugged in. Sometimes it is due to the breakage of the fan blades, sometimes it is due to the loose screws that cause noise also and sometimes there is a technical defect in the motor of the fan. To fix the problem with the fan its best to get a technical help from the professionals or else if one wants to fix it at home then try to move with your hand first or tighten up the screws carefully.
  5. 5
    Stops working – if continuous plug in the dehumidifier will stop working once the humidity in the air is exerted, but the motor will continuously run and will not even give any result. Put it off so that temperature can rise and it can work well again. Plus, most dehumidifiers work well in the temperature above 65 degree Fahrenheit.
  6. 6
    Dehumidifier not meeting specs while on continuous function – This is a common issue as owners expect the dehumidifier to reach the ideal target, in this case 70 pints per day, every day. That capacity does happen under specific conditions and will not be reached if the day is drier and cooler than other days. This is normal as the device will extract less moisture from the air if the humidity level has been reached
  7. 7
    Dehumidifier not working when the water tank is empty – you realize that your dehumidifier is not collecting water even though the switch may be working there can still be a problem at the switch. The trouble comes in when the water tank is not placed properly and hits the switch telling the device that it is full. Reposition the tank to see if that solves the problem. Or push the switch with your finger.
  8. 8
    Keep getting an error code on my 70 Pt. Frigidaire dehumidifier  Depending on the error code, it could be that your filters need cleaning or replacing. Or it may mean that you need to clean the thermal sensor with some steel wool. Finally, it may mean that your sensor is going bad and needs to be replaced
  9. 9
    Dehumidifier doesn’t turn off when the bucket is full  sometimes just turning the power off for 30 seconds will solve this issue. Then it may not and you will have to give the switch a little poke. If it sticks, just tap it from the backside to release it from the stuck position.

Final Verdict

These are just some of the issues you will face when you buy a dehumidifier. Most problems can be solved by doing it yourself and without making an expensive trip to the repair shop.

Do some research first before contacting the repairman to save yourself some time and money

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My name is Justin Williams. I am the founder and blogger at (read more about us). I was an allergy sufferer and that is also the reason why I began my trek to finding the best dehumidifier for my own personal health issues. All of the dehumidifier top picks on the site were put through their paces by Lance Perez - our dehumidifier researcher. He put each one through a series of tests to see how well they performed. Then, our editorial team compiled the insights into articles and published them.

27 thoughts on “Some Common Dehumidifier Problems and Troubleshooting Tips”

  1. A week ago I bought a Frigidaire dehumidifier (FAD704DWD) for my basement (740 sq. ft.). At best it only takes about 30-40 pints of moisture out of the air in 24 hours when in continuous use. Should I return this unit and try another or is there another reasonable explanation?

    Thank you.

  2. My dehumidifier stops running after a few seconds as if the water tank is full, even though there is no water in it. The switch works perfectly. What could be wrong?

  3. Unit does not shut off when bucket is full . I have water over flowing . Have to shut unit off and empty bucket which is not a problem but is when not at home and bucket overflows.
    Is there something I should know about putting the bucket back on ? I believe it is seated correctly.!!! after it is put back on.

  4. I have the same above issue. After bucket fills with water. The indicator light is on. I still find a puddle of water on the floor infront if unit. I too believe I have the bucket seated properly?

  5. My unit turns on, fan blows but no moisture is taken in to the bucket. I cleaned the filter . What else could I do to make it suck in the moisture? Need to know know. Heat wave here in CT

  6. I bought a Fral FDK70 2years ago, and it stops now with the POPT symbol. Had refrigerant added but still have same problem. Suggestions?

  7. I have model fad704dud has worked well. I have a hose connected to unit . it is now filling the tank. with a little water in the hose

  8. I have a FEDDERS, Model A7DH45B2A-A-R. Unit has been on for several hours, but no water. The unit feels warm. Filter is clean. Please advise. Thanks

  9. My Fral FDK54 dehumidifier doesn’t run at all, and displays error code PR12. Seller says warranty is over and code indicates a “probe” problem. Suggestions about better diagnosing and repairing would be greatly appreciated. Thanks. Tony

    • reset the machine by powering down, unplugging, holding the minus sign button while plugging in and continue holding for about 10 seconds until the machine beeps a few times.

  10. The “filter needs cleaning” has come on. Where do I find the filter, and, what’s the best cleaning method?

  11. Here are 2 simple suggestions that should be done first as I learned just a few days ago. Mine was moaning & groaning very loudly, collecting very little water, and I was ready to trash it. I moved it back to the it’s previous location. I moved it this year to a spot where I thought the airflow would be better. #1 Try a different outlet not the the previous owner’s crappy DIY outlet. My dehumidifier is now purring and collecting lots of water. #2 Make sure it is level.

    These 2 hints may help with other problems as well. Sensors may not work if it is not level.

  12. I have a Frigidaire the clean air filter comes on you clean filter turn it back on light won’t go off.

  13. I have a Frigidaire fad704dwd dehumidifier that has stopped working & shows a code EC ; outlet voltage chk’d good & surrounding temp in range. can it be fixed?

  14. My Frigidaire humidifier is making a problem. It is switching by itself to timer off. Sometimes it doesn’t want to turn on or off, I push all button and they act like locked. If I push the timer button it change to humidity settings, but immediate change to timer again. Any advise, please.
    Thank you.


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