What Does Monogram Dryer Error Code F03 Mean?
Error code F03 on a Monogram dryer indicates an open circuit in the inlet temperature sensor. An open-circuit sensor has infinite resistance — no electrical signal passes through it. The control board receives no temperature data from the inlet and triggers F03 to halt operation safely.
Common Causes of F03
- Failed inlet temperature sensor (broken internal element)
- Disconnected wiring connector at the sensor or control board
- Broken wire in the sensor circuit
- Corroded or burned terminal pins
How to Troubleshoot F03
- Power reset: Unplug for 60 seconds and restart.
- Check connector seating: With the dryer unplugged, locate the inlet temperature sensor and firmly push in the wiring connector. A partially disconnected connector is a common cause of open-circuit faults.
- Trace the wiring: Follow the wire from the sensor to the control board. Look for a broken wire, especially at any point where the wire passes through a panel opening or near moving components.
- Test sensor with multimeter: Disconnect the sensor and measure resistance. Infinite resistance (OL on multimeter display) at room temperature confirms an open circuit — replace the sensor.
- Replace the sensor: Install a factory-certified Monogram inlet temperature sensor and ensure the connector is fully engaged.
Need help diagnosing F03? Call our Monogram dryer repair specialists at 844-752-7887 — we carry genuine temperature sensors for all Monogram dryer models.