Zanussi Oven F3 Error Code: Causes and Fixes
Quick answer: Sensor open circuit
What you’ll notice
Oven will not heat or displays F3; temperature sensor circuit is open.
Zanussi
Oven
Code F3
high severity
Zanussi models: Zanussi ovens share the Electrolux platform. Standard temperature probe at the rear cavity wall. Catalytic self-cleaning liners (on models without Pyrolytic) should be wiped at 220°C — do not use oven cleaners on catalytic panels.
Common causes
- RTD temperature probe wire broken internally
- Probe connector disconnected at the control board
- Probe physically damaged from a spillover
Step-by-step fix
- Locate the temperature probe (a thin metal sensor at the back interior of the oven cavity).
- Test resistance at the probe's connector — open circuit (infinite resistance) confirms a broken probe.
- Inspect the wire run from the probe to the control board for damage.
- Replace the probe — it is typically a straightforward DIY part.
Tools you may need
MultimeterScrewdriver set
Prevention
- Do not place foil directly over the oven floor — it can trap heat and damage the probe wire.
- Replace the probe if it shows any physical damage after a spillover.
When to stop DIY
If the probe tests good, the harness or control board has the fault.
FAQ
What does F3 mean on Zanussi oven?
F3 usually indicates: Sensor open circuit.
Can I keep using the appliance with F3?
Use caution. Severity is high. If the probe tests good, the harness or control board has the fault.
How long does this fix usually take?
Typical first-pass troubleshooting takes 20–30 minutes.