Question about Maytag M7DH45B2A Dehumidifier

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Low half of coil frosting over - Maytag M7DH45B2A Dehumidifier

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Can mean it's low on refrigerant.

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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Why is there a continuous frost build up on the outside of the filter of my 70 pt dehumidifier.?


frost on the coils of a machine is an indicator of low air flow across the coils ,and also a decrease in the gas charge inside the machine , the first usually causes the second , due to increase in heat build up , its gotta expand and vent to someplace when it gets hot

May 18, 2015 | Soleus Dehumidifiers

1 Answer

Compressor running very hot but almost no cooling. Fan running


make sure the coils are clean both evaporator and condenser,then if there is a capacitor in the motor circuitry,check this,finally if the coils frost,then clear up and frost and clear up time and again,this is a sign of low refrigerant R134a,and this also will make the compressor run hot

Apr 09, 2010 | Haier 45-Pint Dehumidifier

1 Answer

I have a ebac bd80 and the coils stay frosted ,


Frost means one of two things, low refrigerant or low airflow across the coil. The unit probably has lost it's refrigerant charge ( or some of it's charge) even though it hasn't been used.

Oct 25, 2009 | Ebac Dehumidifiers

1 Answer

My dehu has frost on coils most of the the


if the room air is cooler than the dehumidifier then they will frost over. normally frosting over means loss of freon but because it is a closed system there probably isn't. if the air's moisture level [humidity] is low then don't even run the machine.

Oct 25, 2009 | Ebac BD80 Dehumidifier

2 Answers

Dehumidifier


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)

Jun 02, 2008 | Goldstar DH5010B Dehumidifier

1 Answer

No 120v to fan motor


It sounds as if this may have electronic controls on it. If so, the problem could be related to too low of an ambient temperature or too low humidity in the air. If this design has a temperature sensor built into it, you may be experiencing "hibernation mode", where the unit will appear to be dead, when it is actually awaiting the proper temperature to employ itself.
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)

Jun 02, 2008 | Kenmore 54351 Dehumidifier

2 Answers

Friedrich dehumidifier


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)

Jun 01, 2008 | Friedrich D50C Dehumidifier

1 Answer

Ebac 880 E


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.
If your model does not employ a "Frost-Guard" the condition you describe will avail itself when the above parameters are not met.
Simply unplug, or turn off the unit, until the above parameters are met or exceeded.


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

Dave E. (Illeagle)

Jun 01, 2008 | Ebac AD850 Dehumidifier

1 Answer

Kenmore Dehumidifier Won't Power On - No Lights, No Action


It sounds as if this may have electronic controls on it. If so, the problem could be related to too low of an ambient temperature or too low humidity in the air. If this design has a temperature sensor built into it, you may be experiencing "hibernation mode", where the unit will appear to be dead, when it is actually awaiting the proper temperature to employ itself.
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)

Jun 01, 2008 | Dehumidifiers

1 Answer

D50c


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)

Aug 10, 2007 | Friedrich D50C Dehumidifier

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