Thermador Range Error Code F14

F14 on a Thermador range indicates either a control display PCB EEPROM error on C, CM, and CJ series ovens, or an open sensor circuit at the relay board on Gaggenau-platform models. In both cases, a critical board-level fault has been detected. The oven will typically stop operating normally until the underlying issue is resolved.

It is not recommended to continue using the range while F14 is active. An EEPROM error or open sensor circuit means the control system may not be able to accurately monitor or regulate oven operation. Continuing to use the appliance could result in unpredictable behavior or unsafe conditions. Discontinue use until the fault is diagnosed and corrected.

Repair costs for an F14 error typically depend on which component has failed. Relay board or control display PCB replacements on Thermador ranges generally range from $200 to $600 or more in parts alone, with labor costs varying by region and service provider. Obtaining a diagnostic estimate from a certified technician before authorizing repairs is advisable.

Some homeowners with electrical experience may be able to inspect wiring connections and reseat harness connectors, but replacing the relay board or control display PCB requires comfort working inside high-voltage appliances. Because the repair involves internal circuit boards, most homeowners are better served by hiring a qualified appliance technician to diagnose and complete the repair safely.

A power reset by switching off the circuit breaker for several minutes may temporarily clear the F14 code, but it is unlikely to resolve the underlying hardware fault. If the EEPROM is corrupted or the relay board has a defect, the error will return during normal operation. A reset can be useful for confirming whether the fault is intermittent, but it is not a permanent fix.