Recently the dehumidifier started a loud rumbling which also has a pulse rhythm to it. Changing the fan speed slows down the rumpling and the pulse rhythm. I took off the back of the unit and the fan spins freely with my finger and the fan moves maybe a centimeter or so back and forth with the shaft.
I'm not sure if the fan shaft is jumping off the motor as I can't tell how the fan shaft is normally secured. Is the problem with the motor itself that I need to change the motor or is the fan shaft jumping off the motor?
Any help would be great.
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Sounds like the bearings have failed in the fan motor, & the rotor is rubbing on the stator. You mentioned end play in the shaft, check for cross play. There should be no perceptable cross play, any found indicates a need for a new motor.
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Yes the heat is a byproduct of the compressor running....there will be a slight overall heat gain...this is very normal and nothing to be concerned about....the dehumidifier passes the air over a cold coil to pull out the moisture but also discharges the heat into the room...so... the net result is heat gain in the amount of electrical energy the dehumidifier is using...
Make sure the filter is clean and also make sure the coils are cleaned. If these are clogged they will restrict airflow which will cause the coils not to remove the humidity from the air. LG recommends that you clean the air filter every 2 weeks. They also include a brush to clean the coils. If this still does not work you will need to contact LG for service or a replacement. They have a 5 year warranty on them so the ones that you guys have should still be under warranty. Make sure that you have your reciept when you contact them to prove that it is still under warranty. Keep me posted. Also please rate my solution when you get a chance. Thanks - Tech101