Cooker
E10
The E10 error code on a Rangemaster cooker indicates a fault with the oven’s temperature sensor (NTC probe), meaning the appliance cannot accurately read or regulate oven heat. It’s a moderately serious fault — your oven will typically lock out or refuse to heat until it’s resolved.
What does this error mean?
Rangemaster uses the E10 code to signal that the oven temperature sensor (also called the NTC thermistor or probe) is either reading an out-of-range temperature, has developed a short circuit, or has failed entirely. The control board cannot get a reliable temperature signal, so it shuts the oven down as a safety precaution. This is an electrical fault, not a gas fault, even on dual-fuel Rangemaster models — the sensor itself is an electrical component.
Est. repair cost
£15–£35 DIY sensor replacement; £80–£150 engineer sensor repair; £150–£300+ if control board replacement is needed
🔍 Likely causes
🛠️ Step-by-step fix
Step 1 — Reset the oven: Switch the cooker off at the wall or isolator switch, wait 5 minutes, then power back on. A one-off control board glitch can trigger E10 and a reset clears it. If E10 returns, move to the next steps.
Step 2 — Check for obvious wiring damage: With the oven cold and the power fully off at the fuse spur, open the oven door and visually inspect the back wall of the oven cavity. Look for a small metal probe (usually two wires) — this is the NTC sensor. Check whether the connector is seated properly or the wire looks burned or pinched.
Step 3 — Reseat the sensor connector: If the wiring connector to the sensor is accessible and clearly just loose, gently push it back onto the sensor terminal. Restore power and test. This alone fixes E10 in a surprising number of cases.
Step 4 — Test the sensor with a multimeter: A healthy Rangemaster NTC sensor typically reads around 1,000–1,100 ohms at room temperature (20°C). If you own a multimeter, disconnect the sensor and test across its terminals. A reading of zero (short) or infinite (open circuit) confirms a failed sensor — replace it.
Step 5 — Replace the NTC sensor: Rangemaster oven sensors are a push-fit or two-screw fitment inside the oven cavity and are straightforward to replace with the power off. Order a genuine Rangemaster part using your model number (found on the oven door frame). Cost is typically £15–£35. Fit, reconnect the wiring, restore power, and test.
Step 6 — If E10 persists after a confirmed good sensor: Stop DIY here. The fault is likely the control board (PCB), which requires professional diagnosis and replacement — this is not a safe or cost-effective DIY job.
📞 When to call a professional
Call a qualified appliance engineer if the error persists after replacing the sensor, if you find burned or melted wiring inside the oven, or if you’re not comfortable using a multimeter. Tell the engineer: ‘My Rangemaster is showing an E10 error code — I believe it’s a temperature sensor or control board fault.’ If your cooker is dual-fuel and you smell gas at any point, do not investigate further — call the National Gas Emergency line on 0800 111 999 immediately.
⚖️ Repair or replace?
A sensor replacement carried out by an engineer typically costs £80–£150 including parts and labour — well worth it on a Rangemaster under 8 years old. A control board (PCB) repair or replacement costs £150–£300+, which makes replacement worth considering on cookers over 10 years old or cheaper entry-level models. Rangemaster build quality is generally strong, so repair is usually the right call on mid-range and professional-series models within a reasonable age.