Frigidaire Range Error Code LEDs 4+7

LEDs 4+7 on a Frigidaire range indicates an open circuit in the RTD sensor probe circuit. The RTD is the resistance-based temperature sensor inside the oven cavity, and this code means the control board is not receiving a valid resistance signal from it. The fault can originate at the probe itself or anywhere along the wiring between the probe and the control board.

It is not recommended to use the oven while this fault is active. Because the control board cannot read a valid temperature signal, the oven cannot regulate heat accurately, which creates a risk of overheating. Stovetop burners may still function, but the oven should remain off until the sensor circuit is repaired.

If the RTD sensor probe needs replacement, parts typically cost in the range of $20 to $60 depending on the specific model. If a professional technician is hired, the total repair cost including labor generally falls in the range of $100 to $250. Wiring repairs can vary depending on the extent of the damage.

A knowledgeable DIYer can diagnose this fault by visually inspecting the probe wiring and connectors for damage, then measuring RTD resistance with a multimeter and comparing the reading to the probe resistance chart. If the wiring checks out and the probe resistance is out of spec, replacing the RTD sensor probe is a straightforward repair involving disconnecting the old probe and installing a new one. If the issue is damaged wiring or connectors, repair or replacement of the harness may require more electrical experience.

Resetting the range by cutting power at the breaker may temporarily clear the code, but it will return as soon as the control board attempts to read the RTD circuit and detects the open condition again. The underlying problem in the sensor or wiring must be repaired for the fault to clear permanently.