Question about Danby DDR586R Dehumidifier

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Humidity reading is 16% when actual humidity is 46%

Recendly, my humidifier had frosted and I concluded that the room temperature was too low. I let it thaw, and decided to take the opportunity to clean the inside. There was a lot of dust on the humidity probe, and I opened the tiny white plastic cage in which the probe rests to make a good job. On the cage, I noticed the number 16 written by hand on it. When I reassembled everything, the humidity readings were way off and still are. I thought that there might be some setting knob to calibrate the humidity probe, but found none.

I certainly did something wrong, but now what can I do to?

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Running a dehumidifier when the ambient temperature is to low will cause freeze-ups. Also running it when the dew point of the moisture in the air is to low will cause it to freeze up when you set it to low which would be a higher number on the set point.

The hand written number on the probe casing is probably a quality control inspector number.

Posted on May 05, 2008

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Thank you for your allowing me to advise you on this issue.

Dave E. (Illeagle)

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The following statement is a parameter for all dehumidifiers and some of the control issues may vary, but the theory is the same.

Most dehumidifiers have a "Frost Guard" mounted on the condensor coil. If frost accumulates on the condensor coil the frost guard turns the compressor off until the frost melts, then comes back on again. For the dehumidifier to work properly, the surrounding (ambient), temperature must be higher than 65 degress. This temperature allows the moisture in the air to condense on the coils and drip into the reservoir without freezing up on the condensor coil. Also, if the humidity is too low, (below 45%), the same condition will occur. So it will help to keep the parameters in mind when you have this issue.

Thank you for your allowing me to advise you on this issue.

Dave E. (Illeagle)

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How to use


sorry its kind of late. if you still have this problem let me know

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