Westinghouse Oven Error F3

⚡ Quick Answer: The Westinghouse Oven F3 error indicates a malfunction in the temperature sensor, typically due to an open or shorted connection in the internal tempe... ✅ DIY Fixable

What Does Error F3 Mean?

The Westinghouse Oven F3 error indicates a malfunction in the temperature sensor, typically due to an open or shorted connection in the internal temperature sensing circuit. This error can cause the oven to fail to heat, display erratic temperature readings, or interrupt cooking cycles. The issue is detected by the electronic control board, which monitors the sensor's performance.

Common Symptoms:

  • Oven fails to heat or starts and immediately displays F3
  • Temperature readings erratic or not responding
  • Cooking cycles interrupted or disabled

Possible Causes

  • Open or shorted oven temperature sensor (RTD) (medium)

How to Fix Error F3

DIY Fix Power cycle and basic inspection

  1. Turn off power to the oven at the breaker or unplug it.
  2. Wait a few minutes and restore power to see if the code clears.
  3. Visually inspect sensor wiring and connections for obvious damage.

Technician Only Test and replace oven temperature sensor

  1. Disconnect power to the oven.
  2. Access the temperature sensor (typically mounted inside the oven rear wall).
  3. Use a multimeter to measure sensor resistance; compare against specification.
  4. Replace the sensor if resistance is out of spec or open/shorted.

Parts needed: Oven temperature sensor (RTD)

🛑 When to Call a Pro:
  • If multimeter testing shows correct sensor resistance yet F3 persists (possible control board/wiring fault)
  • If internal wiring appears damaged or corroded
  • If uncomfortable performing electrical diagnostics

Technical Specifications

wattage
component Temperature Sensor
resistance 10-30 ohms
part_number WB21X5303
voltage_rating 120V AC

Common Questions

What does F3 error mean on Westinghouse Oven?

F3 indicates a malfunction in the temperature sensor, causing heating failures or erratic readings.

Can I fix Westinghouse Oven F3 error myself?

Yes, you can power cycle the oven and inspect the sensor wiring for obvious damage.

How much does it cost to fix F3 error?

Repair costs range from $30 to $120 for parts only; labor is additional.

When should I call a technician for F3?

Call if the sensor tests fine but the F3 persists, or if wiring is damaged.

Data last verified: 2026-03-09

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