F17
Indesit Incorrect Mains Supply / Phase Detection Error

Indesit hob or oven display shows F17 and appliance does not start, often after installation

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Incorrect wiring at terminal block (single vs. three-phase), Missing neutral connection, Reversed live and neutral, Undervoltage on supply

How to Fix / Troubleshooting

Safety: This involves mains wiring. If you are not qualified, contact a licensed electrician.

Steps:

  • 1. Check installation manual: Confirm whether your Indesit range is configured for single-phase or multi-phase connection and the correct bridging links are fitted at the terminal block.
  • 2. Inspect terminal block: With power off, remove the rear cover and verify that L, N, and earth are connected as per the wiring diagram on the appliance. Ensure all screws are tight.
  • 3. Verify supply voltage: Using a multimeter (by a qualified person), check that the correct voltage is present between live and neutral.
  • 4. Correct wiring: Adjust links and connections to match the required configuration. Replace any heat-damaged terminal block.
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Repair Difficulty

Professional Required 5/5

Required Part

Terminal Block Assembly
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