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HomeRepair HelpIkea Microwave RepairIkea Microwave is tripping circuit breaker Repair
Ikea Microwave is tripping circuit breaker
Is your Ikea microwave tripping the circuit breaker? Especially when you close the door or start a cycle, the most likely cause is a defective door switch. Most microwaves use three or four interlock switches, including the primary door switch, secondary door switch, and monitor switch, that must operate in sequence. A failed switch can short the circuit, blow the line fuse, or trip the breaker. If the door switches test properly for continuity, the next possibility is a shorted high-voltage capacitor, followed by a shorted magnetron or high-voltage transformer. A failed transformer may also arc or produce a burnt smell. These components are part of the microwave's high-voltage system and can retain thousands of volts after the appliance is unplugged. The high-voltage capacitor must be properly discharged before opening the cabinet or testing or replacing interior parts. If you are not familiar with capacitor discharge procedures, have a qualified technician handle this repair. Enter your Ikea microwave model number to find the exact replacement door switch, high-voltage capacitor, magnetron, high-voltage transformer, line fuse, or other part for your specific model.
01 - Ikea Microwave Door Switch
Most microwaves have three or four door switches. When the microwave door closes, the door switches actuate in sequence to ensure that the door is closed properly. If any of the door switches fail, the microwave line fuse can blow, or the circuit breaker may trip. To determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. If any of the door switches lack continuity, replace the defective switch. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potenti...
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02 - Ikea Microwave High Voltage Capacitor
A microwave that is tripping a circuit breaker can be caused by a shorted high voltage capacitor. You can determine that a capacitor has shorted by contacting one multimeter lead to one of the capacitor's terminals and the other lead to the casing. If meter display indicates that electrical continuity is present between any of the capacitor terminals and the casing, or the terminals show continuous continuity between them, the component has shorted and will need to be replaced.
Uncommon But Possible
03 - Ikea Microwave Magnetron
A microwave that is tripping a circuit breaker can be caused by a shorted magnetron. You can determine that a magnetron has shorted by contacting one multimeter lead to one of the magnetron's terminals and the other lead to the casing. If meter display indicates that electrical continuity is present between any of the terminals and the casing, the magnetron has shorted and will need to be replaced.
Uncommon But Possible
04 - Ikea Microwave High Voltage Transformer
A microwave that is tripping a circuit breaker can be caused by a shorted high voltage transformer. When a high voltage transformer shorts out, it will usually arc and smell burnt.
Uncommon But Possible
Frequently Asked Questions
Why is my IKEA microwave tripping the breaker when I open the door or start it?
What should I do if my IKEA microwave keeps tripping the breaker?
Can a blown fuse cause an IKEA microwave to trip the circuit breaker?
Is it safe to use my IKEA microwave if it trips the breaker or smells like burning?
How do I find the correct replacement door switch or fuse for my IKEA microwave?
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