Product review (4 stars): Thing of beauty
I looked at a lot of exhaust hood before buying this one.  It is lower price than many, but what a great product!  The light is bright. The fan works great in getting odor and heat out. The thing looks great. I absolutely love this.
9 month later:  the vent hood would come on by itself. Sometimes it's the lights, other times it's the fan, other times it just flash and beep. When it happens, often the controls would not respond when you try to turn it off. I switch off the circuit breaker to get it to stop.  Will try to contact the manufacture.

Problem solved.: According to the manufacture you can solve this by disabling the gas sensor. Remove the filter panels on the bottom. From under the hood, disconnect the wire from the sensor - which is located between the lights. There is a connector about 4" from the sensor that can be unplugged. That solved the problem.