F15
Indesit
Dryer Heater Relay Stuck On
Dryer function stuck on or will not turn off; overheating risk; F15 displayed.
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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
Welded dryer heater relay on main PCB, shorted triac or driver transistor, wiring short causing permanent heater energisation
How to Fix / Troubleshooting
Safety: Immediately unplug the appliance if the dryer appears to overheat or run when it should be off.
- Do not operate: Do not continue using the dryer until the fault is corrected; there is a fire risk.
- Inspect control board: Remove the main PCB and inspect the dryer heater relay area for signs of burning or melted plastic. A welded relay will require board replacement.
- Check wiring: Ensure no wires are shorted together at the heater or relay outputs.
- Replace PCB: In most cases, resolving F15 requires replacing the main control board with the correct Indesit part.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board (Dryer Heater Relay)
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