I have a Frigidaire PLEC30S9EC, its worked great for about a year and all of a sudden one of the burners started freaking out on me. At first it would go to high when I turned it to off, then it would fluctuate between temperatures when I wasn't touching the knob. I killed power to it at the breaker and turned it back on, now that burner just shows an Er. I'm 2 weeks past the 1 year mark so I imagine I am out of luck in terms of the warranty. I see they have a recall going for several other cooktop models with similar symptoms http://www.laundrypumprecall.com/node42.aspx but this one isn't listed. It should be, this is a safety issue and I'm nervous about leaving the breaker to the stovetop on for fear it will start heating up spontaneously.

SOURCE: Frigidaire smooth cooktop PLEC30S9EC

I have planned to buy a Frigidaire cooktop but after learning all the complications about 220V and 120V I decided to buy an American-made cooktop instead.

SOURCE: Frigidaire Ceramic Cooktop PLEC36S9eca - Turns on but burners won't heat up

Check the power plug is their any separate plug on it / if none check the control panel some switch to power on .

SOURCE: Frigidaire glass cooktop

first try putting pans on top and see what they do you should not operate these type of eyes with nothing on them as you will burn out the sensors in the eyes if nothing is there to reflect the heat back to them if it does the same thing with pans on them then you will have to replace the elements

SOURCE: Element on ceramic Frigidaire Gallery cooktop won't go off.

take knob off and check the middle is not split and hence not turning the shaft

SOURCE: Constant ignition

you will need to replace the spark module inside the unit