Oven shuts off by itself before the set time or temperature is reached.

Safety first: Turn off power before removing panels.

Steps:

• Ventilation: Ensure the control panel vents and rear of the range are not blocked. Do not push the range tightly against the wall if vents are rear-facing.
• Check sensor: Test the oven temperature sensor resistance at room temperature and at a known elevated temperature (if possible). Replace if readings are unstable or out of spec.
• Inspect wiring: Check the power cord, terminal block, and internal harness for loose or burnt connections that could cause intermittent power loss.
• Control board: If all else checks good, the EOC may be overheating internally and shutting down; replacement is indicated.