Error code · Range

Frigidaire Electric Range F7 10, 20, 30 and 40: Open Surface Knob Circuit

Medium · inspection needed

Code: F7 10 / 20 / 30 / 40
Appliance: Range
Brand: Frigidaire
Warranty: 30-day workmanship

What F7 10 / 20 / 30 / 40 means

On Frigidaire freestanding electric ranges with the ESEC 10R surface element control, such as the PLEF398DC, F7 followed by 10, 20, 30 or 40 means the potentiometer for one surface element reads open. The tens digit names the element: 10 for the left front, 20 for the left rear, 30 for the right rear and 40 for the right front. You will see one burner stop answering while the others work. These older ranges remain in many Houston homes, and we repair them.

Common causes of F7 10 / 20 / 30 / 40

The potentiometer behind that element's knob
The wiring from that knob to the interface board
The interface board connection for that element

✓ One safe check you can try

1. Note which burner was in use when the code appeared. 2. Turn every element off. 3. Take power off the range at the plug or breaker for a short time, then restore it. 4. Leave the knob in place, and try the other burners one at a time to see which still respond.

! Why to stop there

The code names the element, so we start at that knob and its wiring.
We test the knob and its link to the board, then the board.
A written price comes first, and an honest word on whether an older range is worth the repair.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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F7 10 / 20 / 30 / 40F7 10 / 20 / 30 / 40 questions

Which burner does the number mean?

10 is the left front, 20 the left rear, 30 the right rear and 40 the right front. We start our testing at that knob and its wiring.

Do the other burners still work with F7 10?

Usually, since the code concerns one knob circuit. We would still test them before telling you it is safe to use them, so nothing is left to chance.

Is a knob repair worth it on an older range?

Often yes, since it is a smaller repair. We tell you if a board makes it not worth it, and you get a written price before any work begins.

Book a visit

Still seeing F7 10 / 20 / 30 / 40?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 844-8518