Siemens
Intermittent Power Loss / Thermal Cut-Out
Unit shuts off randomly during use without overheat warning
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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
Loose internal power connector, Failing thermal cut-out switch, Faulty main switch, Over-sensitive overload protector
How to Fix / Troubleshooting
Safety: Unplug before opening the housing.
- Check cord and plug: Wiggle the cord near the plug and entry point (with unit unplugged) to feel for breaks. Replace if suspect.
- Inspect internal connectors: Open the base and verify all spade connectors and plugs on the motor, switch, and PCB are tight.
- Check thermal cut-out: Locate the thermal protector on the motor. Ensure it is firmly attached and wiring is intact. Replace if it opens at too low a temperature (requires testing).
If the unit still shuts off unpredictably, a professional should test the motor and protection circuits.
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Repair Difficulty
Medium
3/5
Required Part
Thermal Cut-Out Switch
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