Bosch
Short Circuit or Earth Leakage
Air fryer trips the household circuit breaker or RCD when starting.
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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
Shorted heating element to chassis, Damaged power cord insulation, Moisture inside heater or fan motor, Shorted component on power board
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset the breaker. Unplug the appliance and leave it unplugged until the fault is found.
Steps:
- 1. Visual inspection: Check the power cord for cuts or crushed sections. Replace if damaged.
- 2. Internal check: Open the housing and inspect the heater, wiring, and motor for signs of arcing, burn marks, or moisture.
- 3. Heater test: Disconnect the heating element and try powering the unit (without heating). If the breaker no longer trips, the heater is likely shorted and must be replaced.
- 4. Insulation resistance: A professional can perform a megohmmeter test between live parts and chassis to locate leakage.
Recommendation: Because this involves safety‑critical insulation, professional service is strongly advised.
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Repair Difficulty
Professional Required
5/5
Required Part
Heating Element Assembly
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