the error you have is a F6 3b and it means that the unit has over heated, you can power down for 20 min and it may clear its self if not you may need a new drive als make sure the cooling fan on the side is running
If you need your Mitsubishi unit tested or repaired
then give us a call at 1-336-770-8360.
We give fair estimates and offer a year warranty.
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Industrial Electronic Recycling
2806 Reynolda Rd Ste 163
Winston Salem, NC, 27106