SMEG
Extended Cycle / Sensor Misreading
Dishwasher runs continuously or cycles take much longer than indicated, without showing an error code.
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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
Heater not reaching target temperature, Faulty NTC sensor reading low, Turbidity sensor always detecting dirty water, Low inlet water temperature
How to Fix / Troubleshooting
Safety first: Disconnect power before testing sensors or heater circuits.
- Check inlet water temperature: If connected to cold water, expect longer cycles. Consider connecting to hot water within SMEG's specified limits if allowed.
- Verify heating: During a hot program, open the door briefly after 20–30 minutes to confirm water is hot. If not, investigate the heater and NTC.
- Clean turbidity sensor: Follow the cleaning steps for the turbidity sensor to ensure it can correctly detect water clarity.
- Run a maintenance cycle: Use a dishwasher cleaner on a hot program to remove grease that may affect sensor readings.
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Repair Difficulty
Medium
3/5
Required Part
NTC Temperature Sensor
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