Instruct: Classify a given Amazon review as either positive or negative.
Query: not dependable unit

I have had to replace the unit the first time w/in the 12 month warranty. They handled it very well and a whole new unit was sent which I installed the "computer" unit only. It died again w/in the year. I had a repair shop check it out and the speed control unit is not working properly and the wiring etc. was correct.