3 flashes
What code 3 flashes means on a Indesit washing machines, what causes it, and which part to check first.
● SEVERITY: MEDIUM
Indesit 3 flashes means: F03 / Error 3. The documented cause is: Test NTC thermistor. Descale in hard water areas before replacing.
What 3 flashes means
F03 / Error 3
The display shows 3 flashes and the machine stops until the fault is cleared.
What the technical documentation says
Causes documented in the technical source published by whitegoodshelp.co.uk
| DOCUMENTED CAUSE OR CHECK |
|---|
| Test NTC thermistor |
| Descale in hard water areas before replacing |
Replacement parts
Tools you'll need
Before you open anything
Unplug the machine and close the water tap before removing any panel. Water and mains electricity sit centimetres apart inside a washing machine. If the drum still holds water, drain it from the filter first — it can be scalding.
What to check, in order
From the quickest check to the one that needs a technician.

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Frequently asked questions
What does 3 flashes mean on a Indesit?
F03 / Error 3 The documented cause is: Test NTC thermistor. Descale in hard water areas before replacing.
Can I fix 3 flashes myself?
It depends on the part involved: Test NTC thermistor. Descale in hard water areas before replacing. Clearing a filter or straightening a hose is within reach of anyone; anything behind a panel means mains electricity and water together — that is a job for a technician.
Does Indesit use other codes on this appliance?
Yes: we document 15 other codes for Indesit on this washing machines. They are listed at the bottom of this page, each with its own meaning.
Does the same code mean the same thing on other brands?
Often not. The same two characters can point to completely different faults depending on the manufacturer — always check the page for your own brand.

