Frigidaire Range Error Code F50

F50 indicates an Analog-to-Digital out-of-range fault on the oven relay board. The relay board is unable to read the status of the door switch or the motor door lock (MDL) switch. This prevents the control system from knowing whether the oven door is open, closed, or locked. The issue is most often traced to the relay board itself.

It is not recommended to continue using the oven while F50 is active. The code indicates the control board cannot confirm the door's open or locked status, which is a safety-critical function especially for self-clean operation. Using the oven in this condition could result in unintended operation of the door lock mechanism or other unpredictable behavior. Discontinue use until the fault is diagnosed and repaired.

Repair costs depend on which component has failed and whether you hire a technician. A replacement oven relay board typically runs in the range of $80 to $200 or more depending on the specific model. If a technician performs the repair, labor charges will add to that cost, generally bringing the total into the $150 to $400 range. Inspecting the wiring and switches first is worthwhile, as those repairs can cost significantly less if the board itself is still functional.

Replacing the oven relay board requires working near high-voltage components, so a strong comfort level with appliance repair is needed before attempting this yourself. Knowledgeable DIYers can inspect the wiring harness and switch connectors for obvious damage as a first step. If those check out, replacing the relay board is the recommended repair. If you are unsure about working with oven electrical systems, a licensed appliance technician is the safer choice.

Resetting the range by disconnecting power for several minutes may temporarily clear the F50 code, but it will typically return if the underlying cause is not corrected. The fault is tied to a hardware failure in the relay board or switch circuitry, and a power reset does not repair those components. If the code returns after a reset, proceed with diagnostic inspection and component replacement.