Frigidaire Range Error Code LEDs 3+7

LEDs 3+7 on a Frigidaire range indicates a communication failure between the oven control board and the variable speed convection board. These two boards must exchange data continuously to regulate convection fan operation, and this code appears when that link is lost. The fault points to wiring, supply voltage, or a failed board in the convection control circuit.

The LEDs 3+7 fault specifically affects the convection system, so standard bake and broil functions may still operate, but convection performance will be unreliable or non-functional. It is best to avoid relying on convection cooking modes until the fault is resolved. If the oven is behaving erratically in other ways as well, discontinue use and have it inspected promptly.

Repair cost depends on what component has failed. If only wiring or a connector needs attention, the cost may be limited to a service call fee, typically in the range of $75 to $150. A replacement variable speed convection board generally adds $100 to $300 in parts, while a replacement oven control board can add $150 to $400 or more depending on the model. Labor charges vary by region and technician.

Power cycling the range by unplugging it or switching off the circuit breaker may temporarily clear the display, but the error will return if the underlying communication fault is not repaired. A reset does not fix wiring problems, low supply voltage, or a defective board. Proper diagnosis and repair of the root cause is required to permanently clear this code.

Start by inspecting the wiring harness between P18 on the oven control board and P1 on the variable speed convection board for loose pins or damage. Next, test for +5VDC between pins 3 and 4 of P1 on the convection board to confirm it is receiving proper power. If wiring and voltage are good, replace the variable speed convection board. If the error continues after that replacement, the oven control board will need to be replaced.