Display shows F3 and oven will not heat or shuts down; may occur immediately on power-up.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before accessing rear panels or control area.
Steps to try:
- Locate sensor: Inside the oven cavity, find the temperature sensor probe on the rear wall. Remove the mounting screws and gently pull the probe forward to access the connector.
- Test sensor: Disconnect the sensor and measure resistance across its terminals. At room temperature, expect ~1080–1100 Ω. If the meter reads OL (open) or extremely high resistance, the sensor is bad.
- Inspect harness: If the sensor tests good, trace the harness from the sensor to the EOC. Look for cuts, burns, or loose connectors. Reseat the connector at the control board.
- Replace sensor if faulty: Install a new BlueStar-compatible oven temperature sensor probe, route the wires away from hot surfaces, and secure with original screws.
When to stop: If wiring and sensor are good but F3 persists, the EOC may have an internal sensor circuit fault and should be replaced by a technician.
Repair Difficulty
Required Part
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