Question about Comfort-Aire Dehumidifiers

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Comfort-aire dehumidifier 501 cycles on and off

Cycles on and off 3 min at a time

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  • dpressm Jun 29, 2008

    Then why come on again in a few minutes?

    What do you mean by "Set Point"



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It is possible that the humidity is below the set point of the dehumidifier. They will run for a short time until they get a true fix on the actual humidity then shut down.

Posted on Jun 29, 2008

  • James Helmer
    James Helmer Jun 29, 2008

    Set point means the level of humidity the dehumidifier is adjusted to control at.



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Do you put water in a dehumidifier

No, a dehumidifier takes water out of the air where it's placed. If it's very humid in the air, you should have a tank full of water after a few hours.

Nov 21, 2013 | Comfort-Aire BHD-501 Dehumidifier

1 Answer

BHD-651D purchased 9-9-08 Ice builds up on coils. Filter and coils/fins clean. Air temp 72 F

What is your humidistat set at? Could you be trying to get to too low a humidity? Try to determine what the humidity is and set the stat just below that. In that way, once it reaches the setpoint, it will cycle off, allowing the coils to warm up.
If that works, lower the setting a bit more & see results.
Write back.


Aug 25, 2011 | Comfort-Aire BHD-501 Dehumidifier

1 Answer

My dehumidifier model BHD-501-D is icing up. The fan and compressor are running, do I need a new thermostat?

You may, but more than likely, the air intake filer needs to be cleaned and the compressor coils wiped down and cleaned. After cleaning the coils, a light coat of WD40 helps to preserve them.

Before attempting any cleaning or service work, turn the unit OFF and unplug it from the wall outlet and allow it to thoroughly thaw. Keep in mind, a dehumidifier will freeze up, if the room temperature is below 40 degrees. Also, where you have it installed may be a problem. Particuarly, a basement. Where the air temperature is colder at floor level.

In case you have misplaced your Owners Manual, I have included a link to it that you can download & print for future reference. Be advised, your Model Number is not for a Sunbeam Dehumidifier, it's for a Comfort Aire dehumidifier that's manufactured by Heat Controller Inc.

I hope this helps you solve the problem. Please let me know. Thanks.

May 07, 2011 | Sunbeam 30Pint Dehumidifier

1 Answer

My dehumidifier model bhd-501 won't shut off& is very hot. What might be the problem? Thanks


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

Dehumidifier is running but no water is in bucket



Jun 18, 2010 | Comfort-Aire BHD-501 Dehumidifier

1 Answer

Dehumidifier is on but nothing happens

air filter clean.
water level switch problem.
control card problem
start at these points first........
if fan is working may be compressor.

Apr 20, 2010 | Comfort-Aire BHD-501 Dehumidifier

1 Answer

Comfort aire overtemperature switch part no. 47-21900-01 I am looking for this part. thanks stew

Call Heat Controller in Tennesse they distribute this although it is made by LG

Jan 22, 2010 | Comfort-Aire BHD-501 Dehumidifier

1 Answer


Your problem may be the thermistor that causes the CH01 trouble code.

Aug 21, 2008 | Comfort-Aire BHD-501 Dehumidifier

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