Thermador Range Error Code F60

The F60 error code on a Thermador range indicates that the lower oven temperature sensor has a shorted circuit. The oven temperature sensor, also called an RTD (resistance temperature detector), is a probe mounted inside the oven cavity that monitors cooking temperature by changing its electrical resistance as temperature rises or falls. At room temperature, a properly functioning lower oven sensor should read approximately 1080 ohms. A shorted sensor reads significantly lower resistance than expected, or near zero ohms, which tells the control system the oven is at an impossibly high temperature. This causes the board to shut down the lower oven as a safety measure and trigger the F60 fault.

The most likely causes of this fault fall into three categories: a failed sensor, damaged wiring, or a faulty power/relay board. The sensor itself can fail internally, producing a short between its internal resistance element leads. The sensor wiring harness can also be damaged if wires become pinched between panels or components during installation or over time from heat cycling. Connector P2 on the power/relay board is the specific interface point for the lower oven sensor circuit and should be the first connection inspected for corrosion, looseness, or heat damage.

Diagnosis should begin by disconnecting power to the range and inspecting connector P2 on the power/relay board for any sign of damage or poor contact. The sensor resistance should then be measured at the sensor connector using a multimeter. If resistance reads well below 1080 ohms or shows a dead short, the sensor needs replacement. If the sensor reads correctly and the wiring is intact with no pinching or damage, the fault points to the power/relay board itself, which will require replacement to resolve the F60 code.