Samsung Range Error Code CF-1

CF-1 indicates that communication between the main PCB and the sub PCB inside your Samsung range has been interrupted. These two control boards must exchange signals continuously to operate the range correctly. When that communication link is lost, the range displays CF-1 and typically stops functioning until the issue is resolved.

A CF-1 error means the control system has detected a failure in internal board communication, so the range may not respond to inputs correctly or at all. Using the range in this state is not recommended, as control functions may be unreliable. The range should remain unplugged until the communication fault is diagnosed and repaired.

If the fix is simply reseating a loose connector, costs are limited to a service call fee, which typically ranges from around $75 to $150 depending on your area. If the main PCB needs to be replaced, the total repair cost including parts and labor generally falls in the range of $200 to $450. Getting a diagnostic estimate before authorizing parts replacement is advisable.

A homeowner with basic mechanical comfort can check whether the wiring connectors on both control boards are fully seated, which is the first and most common fix. However, accessing the PCBs requires opening the range cabinet, so you should unplug the range from power before proceeding. If reseating the connectors does not clear the error, resolving the issue will likely require a technician to replace the main PCB.

Unplugging the range for a few minutes and restoring power may temporarily clear the error display, but if the underlying connector or board issue still exists, CF-1 will return. A reset does not repair a loose connector or a failed PCB. The error will persist until the physical cause is corrected.