Appliance Spares
Quick answer: F3 on a Westinghouse oven means an oven temperature sensor (NTC thermistor) fault. The control board can’t get a clean reading from the temperature probe inside the oven cavity, so it locks the oven out with F3. The fix is replacing the sensor — about a 30-minute job on most models. Westinghouse, Chef, Simpson, Kelvinator and Electrolux ovens sold in Australia share the same chassis family, so sensors and elements cross-fit across the brands. Confirm your model number via the Part Finder for the exact fit.
Not sure which one fits? Match your model number or check the sticker inside the door.
Find the right part for your Westinghouse oven
What F3 means on a Westinghouse oven
The oven has an NTC (Negative Temperature Coefficient) thermistor probe inside the cavity — usually clipped to the back wall or the roof. As the oven heats, the probe’s resistance changes in a predictable curve. The control board reads that resistance and uses it to:
- Maintain the set temperature.
- Time pre-heat.
- Trigger overtemp shutoffs.
When the resistance reading drifts outside the valid range — open circuit, short circuit, or noisy — the board locks the oven out with F3 and won’t allow heating. This is a safety feature, not a nuisance.
The three checks — in order
1. Reset the oven (5 minutes)
A power glitch or a one-off voltage transient can latch F3 even if the sensor is healthy.
- Switch the oven off at the wall (or trip the dedicated circuit breaker — most Australian ovens are on a 32A dedicated circuit) for 5 full minutes.
- Power back on.
- Try the oven.
If F3 clears, watch it over the next few uses. One-off = transient. Returns = sensor fault.
2. Inspect the sensor probe (10 minutes)
Open the oven door and look at the back wall or roof of the cavity. You’ll see a small metal probe (8–12mm diameter, 30–60mm long) with a stainless cover, connected to two thin wires that disappear through a grommet to the back of the oven.
- Probe body cracked, burned, or coated in baked-on grease — replace.
- Wires pulled out of the probe — replace.
- Probe attached and intact — the sensor element has likely drifted internally. Still replace; a visual check can’t rule out internal failure.
3. Replace the sensor (30-minute swap — power off at the breaker first)
Safety first: oven repair involves mains-side wiring (240V on a 32A circuit). Power must be off at the breaker, not just the oven switch. If you’re not comfortable working on mains wiring, get a licensed electrician.
- Power off at the dedicated oven breaker.
- Pull the oven out of its cavity (most slot in — front trim screws hold it in place).
- Drop the rear panel of the oven body.
- Trace the sensor wires from the cavity to a connector or terminal block.
- Unscrew the probe from inside the cavity (single screw through the mounting bracket).
- Pull the sensor out through the back, route the new one through the same path.
- Fit the new probe inside the cavity, refit the rear panel.
- Slide the oven back and test before reinstalling the trim.
Westinghouse / Electrolux / Chef / Simpson / Kelvinator — same chassis family
Ovens sold in Australia under these five brand badges share manufacturing — the same temperature sensor, the same heating element platform and the same control board across many models. So a Chef oven element or an Electrolux oven sensor will often fit your Westinghouse, and vice versa.
Relevant parts we stock:
- Chef / Simpson oven bake element (2400W) — replaces the bake or fan-bake element across the shared chassis family.
- Electrolux oven door-light micro switch — fits EVEP616SC, EVEP618SC, EVEP623SB, EVEP626BB, EVEP626SC and a number of Westinghouse / Chef ovens on the same chassis.
For the exact temperature sensor matched to your Westinghouse model, run your model number through the Part Finder — sensor parts vary across chassis generations (different connectors, different resistance curves), so model-specific matching matters.
Don’t have your model number? Open the oven door — the sticker is on the lower lip of the door frame in most installs. Take a photo and send it through the contact form; we’ve been matching parts to this chassis family since 2009 and can usually ID it on sight.
When F3 isn’t the sensor
- Wiring loom damage — heat-cracked insulation between the sensor and the control board can mimic a sensor fault. Check the loom along the back of the oven.
- Control board fault — a sensor input pin damaged after a power surge. Rarer than the sensor itself. If you’ve swapped the sensor and F3 returns immediately, this is the next suspect.
DIY parts vs licensed work
| Path | What you typically pay | Notes |
|---|---|---|
| Technician callout + part + labour | $280–$500 typical metro | + weekend / regional premium |
| DIY sensor swap | Part only | 30-minute job; requires power-off-at-breaker discipline |
Important: element and sensor swaps that involve mains-side terminal-block wiring are the boundary between DIY and licensed work. The legal rule in Australia is that fixed-wired appliance work is licensed-electrician territory if you’re hardwiring or rewiring the connection to the dedicated circuit. If in doubt, get an electrician for the swap and supply the part yourself — still far cheaper than a full callout-plus-parts repair.
Parts that fix this
In stock now and dispatched the same day from Sydney (order before 12pm). Not sure which one fits your model? Find your model number and match it against the fitment list on the part page before you order.
Frequently asked questions
F3 only shows up after the oven’s been running 30+ minutes — what’s the fix?
Classic sign of a sensor drifting as it heats — the reading is fine cold but goes out of range hot. Replace the sensor; it’s at the end of its life.
My oven shows F3 but still heats — can I keep using it?
No. The control board locks the main heating circuit out on F3. If your oven appears to still heat, it may be the grill or a second element on a separate control loop. Don’t keep using a fault-locked oven — overtemp protection isn’t reliable when the sensor is feeding bad data.
Westinghouse F1, F2, F3 — same fix?
Not always — different codes map to different sensors across chassis generations. They’re all sensor-family faults though, and the diagnostic flow (reset → inspect → swap) is the same. Confirm against your model’s code list via the Part Finder.
Will an Electrolux oven sensor fit my Westinghouse?
Often yes — same Australian chassis family. But the connector and resistance curve must match. Confirm by the part fitted to your old sensor before ordering.
Where is the model number on a Westinghouse oven?
On the model sticker — open the oven door and check the lower lip of the door frame, where the sticker sits hidden when the door is closed. Some models also carry it on the side trim. It’s the letter-and-number code you enter into the Part Finder to match the exact sensor.
What if the oven is still under warranty?
Don’t open it up — DIY work can void the warranty. Contact the retailer or Westinghouse service first.
Related guides
- Oven not heating but light works — full diagnosis
- Westinghouse, Chef & Electrolux oven fault codes — the full family guide
- Check F3 in the all-brands appliance error code decoder
- Smeg oven not heating — causes ranked
- Induction cooktop error codes decoded
Ready to fix it?
- Run your Westinghouse oven model through the Oz Appliance Spares Part Finder — model in, exact-fit sensor out.
- Browse oven and stove parts
- Order before 12pm Sydney time → ships same day from our Sydney Northern Beaches warehouse, Australia-wide.
