Indesit washing machine

Indesit F03 error code: temperature sensor fault

The water temperature sensor (NTC) is faulty.

DIY: moderateTypical repair: £80–£170.

Likely causes

Faulty NTC sensor
Wiring fault

How to fix F03

Unplug the washing machine (or switch off at the wall) for 5–10 minutes to clear any temporary fault, then restart it.
Replace the NTC sensor.
Run a short test cycle. If F03 returns, the fault is still there and an engineer should look at it.

Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.

Full fault guide

Washing machine not heating waterDetailed causes, DIY steps and costs

Other Indesit washing machine error codes

Indesit washing machine repair near you

Frequently asked questions

What does Indesit error code F03 mean?

The water temperature sensor (NTC) is faulty. On a Indesit washing machine, F03 is shown as "temperature sensor fault".

How do I clear the F03 error on a Indesit washing machine?

Switch the appliance off at the wall for 5–10 minutes, then restart. If F03 comes back, work through the checks on this page — the fault is real and needs fixing, not just resetting.

How much does it cost to fix Indesit F03?

£80–£170. is typical, depending on the part. Simple blockages cost nothing to clear yourself.

Does F03 mean the same on every Indesit model?

Not always. Codes are broadly consistent within a brand, but model ranges differ. Check your manual if the symptoms below don’t match.