Question about Maytag M7DH65B2A Dehumidifier
Several things can cause this problem. The leading one, is that the humidity extraction level is set to high. Lower it to 35%. One of the others, is a dirty or clogged air intake filter. Followed by obstructed air flow. You need to maintain at least a minimum of 12" clear air space around the unit. Also, most humidifiers struggle to operate correctly, if the ambient air temperature at floor level is between 40 to 60 degrees F. This will also cause the fan to run a lot if the unit is set in continuous mode, rather than a timed mode. And finally, if any doors or windows are open, the unit will run forever. Make sure all doors and windows are closed.
Here's an in home test to see if it's working properly. Move the dehumidifier to the bathroom. Plug it in turn it ON and set the humidity/moisture extraction level to 35%. Turn the shower ON hot enough to generate steam. Do Not turn the bathroom exhaust fan ON and close any windows that may be open. As you exit the bathroom, close the door. Wait 15 to 20 minutes before returning to the bathroom. Once you do, turn the shower OFF and allow the unit to run for 5 minutes more. Then check the bucket for any signs of water. If you find some, the unit is working as it should.
If you don't see any signs of water, the unit's compressor may need to be recharged with refrigerant.
Hope this helped you to troubleshoot and solve the problem. Please let me know. Thanks.
Posted on May 29, 2011
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Posted on Jan 02, 2017
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So I just had this happen with my Frigidaire fad704dwd dehumidifier. I went to basement and heard it running and sounded off. The compressor was running fan was off which is bad and humidity said 30. I then pushed the off button and it stayed running. I was able to fix it. To make long story short it was a bad ground. I took the plastic back, sides, and front off. There was a green ground (main ground) and Green/yellow ground (fan ground) on the front coil with a bunch of rust. Removed the grounds connected them both together and cleaned the surface area and used a new stainless screw nut and screw to remount the wires to evaporator coil. Everything started working fine after that and I put it back together. Good Luck
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