Does this unit have a 3 volt battery in the control panel like the 17005 model? The battery lasts appx 4-5 years then the unit doesnt seem to work any more once you change it. The unit must be left plugged in while you change the battery otherwise you lose your programing. If your not under warranty, UNPLUG it then pull out the filter, take out the 6 screws, separate the sides, and expose the fan. If the fan does not spin very easilly with no drag, the bearings are gummy; which is why nearly all small motors get replaced. The motor can be easilly disassembled, gummy grease washed off with rubbing alcohol and a cotton swab, and reoiled with synthetic oil. These units are designed to gum up and require replacement at approximately the same time the warranty expires. They would last almost indefinitely if oiled in their little oil ports occasionally (every couple of years). If your bearings are stiff, then a hidden safety device has tripped to avoid a fire, and if you are handy, you can replace the blown fuse if you can locate it on the circuit board, or the blown over temp device. If you have to pay some one to do this, it is cheaper to replace the whole machine in this throw away world.
Is there a safety switch for the cover when you change the hepa filter, maybe its broken?
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