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Have same issue with 3 year old Frigidaire dehumidifier purchased in 2012. Must unplug to stop compressor running with power switch turned off. Unit gets hot and smells. Unplugging creates arcs at outlet since unit is pulling a lot of power. Plugging back in after some hours will make it appear to run normally and again remove moisture but it will not shut off when the fan goes off (humidistat bad?) and the set-point is reached. Cannot leave plugged in due to safetty/fire/overheating concern. Have not found answer on this forum or any other so far.
if the fan is simply humming but not turning over take the back cover off and make sure the blower piece is free turning. i used to have a dehumidifier(goldstar similar model long sold though) it had a bad thermal fuse in the fan motor but compressor worked perfect. bolt is i think 10mm and i had to peel the tape off of the motor windings to get at the fuse. soldered new one in(p/o gave me new fuse and 10 bucks to get it out of his hair what a deal:) ) and retaped the windings. also the felt bearings may be loose but i just lubed the front and back bearing housings well with syn-lube(valvoline for brakes) and reassembled. baby oil works wonders so does vasoline but due to heat that trick does not last long before making a racket and leaves a **** on the assemblies underneath(mess) so try the high temp lube or any moly based brake lube
There are 5 basic, but solvable reasons for what you described. Please pay particular attention to numbers 1 & 2. 1. The humidity extraction level is set to HIGH. Lower it to 32-35%.
2. Air intake filter is dirty or clogged. Turn unit OFF, & Unplug the Unit, before removing to inspect & clean it, if necessary. If washed, allow filter to completely dry before reinstalling. DO NOT operate the unit without the filter.
3. Obstructed air flow. Maintain a minimum of 12 to 18" of clear air
space around the entire unit.
4. Cooling coils are dirty and need to be cleaned. Use warm water & dish washing liquid to clean the coils. Rinse and wipe dry. Apply a light coating of WD40 to the coils.
5. Ambient air temperature at floor level is between 40 - 65 degrees.
dehumidifiers do not work well between those temperatures (Unless, you have a Low Temp Unit). This applies mainly to where the air
temperature at floor level is colder than at shoulder level in basement applications. Raising the unit up off the floor, onto a sturdy table, counter top, etc, that can handle the weight of the unit, plus a full tank of water, will usually resolve this problem.
none of the above solves the problem, it may be a case of the
compressor needs to be recharged with refrigerant gas or that the humidity condenser sensor has failed. These things usually occur in units that are
5 years old or older. It's rare in a unit younger than that. But, it
I hope the above helped you. Please let me know and thanks for choosing FixYa.
Well to knowledge the problem 40 percent is dry. means your basement is great. humidity should be 30/50 percent 50 grows mold. also if it runs for a min the auot shut off is activating. check this first.
Your fan motor is going out. You can remove the screws from the back cover and gently pry it off. After that, look into the unit and you will see the screws holding the front cover. Take the bucket out and remove the screws at the top. All the screws around the entire metal shroud need to come out. Then with the covers off you can see the fan mount screws. You have to move the evaporator very gently out of the way to get to these screws. Remove the fan motor replace it and re assemble the unit.
if you can verify that the compressor is still active (is there a noticeable hum or buzz and / or do the room lights slightly dim during power on?) then the most likely problem is a loss of freon. if the compressor never turns on, then a faulty humidistat is likely...an electrician can run a test of this by "jumpering it out" to force on the compressor motor.