Oven
F14
The F14 error code on a Zanussi oven indicates a fault with the oven’s temperature sensor (NTC probe) or its circuit — it’s a moderately serious fault that will prevent the oven from heating safely until resolved.
What does this error mean?
F14 means the oven’s control board has detected that the temperature sensor (NTC thermistor) is reading an implausibly high temperature or an open circuit — essentially, it can’t trust the temperature data it’s receiving. Without reliable temperature feedback, the oven shuts down heating as a safety measure. This is not a cosmetic fault; the oven will not function normally until the underlying cause is fixed.
Est. repair cost
£15–£35 DIY (NTC sensor part only); £80–£130 professional repair (sensor); £150–£250 professional repair (PCB replacement)
🔍 Likely causes
🛠️ Step-by-step fix
Power cycle the oven: switch it off at the wall socket or trip the fuse in your consumer unit, wait 5 minutes, then restore power. If F14 clears and doesn’t return, it was a temporary glitch.
Inspect the NTC sensor probe: it’s usually located on the rear interior wall of the oven cavity, held by one or two screws. Look for visible damage — burning, cracking, or a melted tip. This visual check requires no tools beyond a torch.
Check the sensor connector: pull the oven away from the wall, remove the back panel (usually 4–6 screws), and locate the two-wire connector running from the sensor to the control board. Ensure it’s firmly seated and the pins aren’t corroded or burnt. Reseat it firmly.
Test the NTC sensor resistance with a multimeter (set to Ohms): a healthy Zanussi NTC sensor typically reads around 990–1010 Ω at room temperature (20°C). A reading of 0 Ω (short) or open-loop (OL) confirms the sensor has failed and needs replacing.
Replace the NTC sensor: genuine or compatible Zanussi NTC probes are available for £15–£35 online (search your model number + ‘NTC sensor’). The replacement is straightforward — unscrew the old probe, unplug the connector, plug in the new one, and refit. No soldering required.
If the error persists after replacing the sensor, stop DIY work — the control board (PCB) is likely faulty, and replacing that requires a professional to diagnose and fit correctly.
📞 When to call a professional
Call a qualified appliance engineer if the error code returns after you’ve replaced the NTC sensor, or if you find burnt or melted wiring inside the oven. Tell the engineer: ‘My Zanussi oven is showing an F14 error — I’ve already replaced the NTC sensor and the fault persists, so I suspect a PCB fault.’ This saves diagnostic time and money.
⚖️ Repair or replace?
A professional repair for an F14 fault — including labour and a new NTC sensor — typically costs £80–£130 in the UK; a PCB replacement pushes this to £150–£250 including parts and labour. If your oven is under 8 years old and otherwise in good condition, repair is almost always worth it. For ovens over 10 years old where the repair bill exceeds £150, a replacement oven (budget models start around £300) is the more sensible long-term investment.