Product review (3 stars): Random on/off after a year
nice looking, good price
It worked great for a year, then we couldn't get it to stay at any speed, as soon as we turn it on, it was running through all switches nonstop.
Saw in another review to disconnect some wire, so i took the whole thing down, took the front LCD control panel out (broke a plastic part that holds screw in the process), and at some point disconnected the gas sensor (i assume) between the 2 lights, and problem solved!

if anyone runs into random switching problem, simply disconnect the connector to the sensor, no need to take it down, break it apart, just disconnect the censor.