Fisher & Paykel
Short Circuit / Overcurrent on Start
Microwave trips the household circuit breaker or blows a fuse when starting or shortly after 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 high-voltage capacitor, Shorted high-voltage diode, Shorted magnetron, Pinched or shorted wiring harness
How to Fix / Troubleshooting
Critical safety warning: Repeatedly resetting a tripping breaker can be dangerous. High-voltage components may be shorted.
- Do not keep resetting: If the breaker trips each time you start the microwave, stop using it until repaired.
- Visual inspection: With power disconnected, remove the outer cover and inspect for burned components or melted wiring in the high-voltage section.
- Check cord and plug: Ensure the power cord and plug are not damaged or overheated.
- Professional service: Testing the capacitor, diode, and magnetron for shorts requires specialized procedures. Contact an authorized Fisher & Paykel technician.
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Repair Difficulty
Professional Required
5/5
Required Part
High-Voltage Capacitor
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