The F08 error on your Indesit Washing means the machine has detected a fault in the water heating circuit. This usually points to a failed heating element, a stuck relay, or a wiring fault, and it often stops the wash cycle partway through to protect the machine.

Error code F08
Meaning Heating circuit fault — the control board cannot detect correct heater operation
Severity Medium — the machine may still wash on cold cycles but cannot heat water properly
Time to fix 20–60 minutes
Tools needed Multimeter, screwdriver set

What the F08 error means

The F08 code appears when the Indesit control board sends power to the heating element but doesn’t get the expected temperature response back. This can mean the heater itself has burned out, the relay controlling it has failed, or there’s a break somewhere in the wiring between the board and the element.

Unlike sensor-only faults, F08 usually means your washes will run cooler than selected, or the cycle will pause and flash the error until you intervene. It’s similar in nature to heating faults seen on other models, such as the Indesit Washing F04 Error Code: Causes and Fixes, though the underlying component affected differs.

Common causes

  • Burnt-out heating element (the most common cause)
  • Failed relay on the main control board
  • Loose or corroded wiring connector at the heater
  • Limescale buildup insulating the heating element
  • Faulty NTC temperature sensor giving incorrect readings
  • Water leaking into the heater housing or wiring area

How to fix the F08 error

  1. Power down and unplug the machine. Always disconnect from the mains before opening any panels or handling internal parts.
  2. Locate the heating element. It’s usually behind the bottom front or rear panel, mounted low in the drum housing. Check your model’s manual for exact placement.
  3. Inspect wiring connections. Look for loose, corroded, or burnt connectors on the heater and NTC sensor, and reseat or clean them as needed.
  4. Test the heating element with a multimeter. A healthy element typically reads between 10–30 ohms; a reading of zero or infinity means it needs replacing.
  5. Check for limescale buildup. If your area has hard water, descale the machine using a proper descaling product and consider doing this regularly going forward.
  6. Replace the element or relay if faulty. If testing confirms a failed part, fit a genuine Indesit replacement or have an engineer do this for you.

FAQ

Can I still use my washing machine with an F08 error?
You may be able to run cold washes, but heated cycles won’t work properly until the fault is fixed. It’s best to address it promptly to avoid poor wash results.

Is F08 expensive to fix?
Not usually. A replacement heating element is a relatively low-cost part, and if you’re comfortable with basic tools, this is a manageable DIY repair.

Does hard water cause F08 errors?
Yes, limescale buildup on the heating element is a common contributing factor. Regular descaling can help prevent this and similar faults, such as those covered in the Indesit Washing F05 Error Code: Causes and Fixes guide.