Product review (2 stars): Attractive, great oven, TERRIBLE cook top performance
My wife and I really liked the looks of the Frigidaire Professional series and were in the market for a dual fuel range. And because we were looking to double the size of our fridge/freezer, and because we needed smudge proof stainless (we have 4 kids), this suite was on the top of the list. We did, however, hesistate buying this range because of a few reviews where people were experiencing strange behavior with the valves on the cooktop. They were complaining that the flame settings were really only low medium and high, not completely variable (like a kitchen faucet for example). The sales person assured us that this was not possible so we ordered the range.

Sure enough, we experience this problem. In looking back through reviews, it's possible that people on Natural Gas don't experience it but rather just the people that convert it to LP. Nonetheless, this issue makes this range nearly useless. My wife grew up on electric and I on gas ranges. It took years to convince her that cooking with gas is far superior. But this range, which cost us around $2000 performs like a range that cost $200. The electric oven and convection system is great and the range itself is very attractive but again, the cooktop performance on LP is complete garbage. Electrolux won't work with us. We also had it looked at by a technician who agrees the performance is bad. Appliance Smart will not take it back so we're stuck with a $2000 boat anchor that is nothing but frustration to use.

So my advice is - if you are considering this range, or any Frigidaire range, and you are using LP as your fuel service, STAY AWAY. I learned all of their ranges use the same valves. If you disregard this review, at least get it in writing that you can return it.

To see these valves in action, I uploaded a few clips:
[...]
[...]