Swan
Door Interlock System Failure
Microwave light, fan, or turntable runs when the door is open, or continues running after door is opened.
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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
Stuck or welded door interlock switch, Misadjusted door latch bracket, Shorted control relay, Incorrect previous repair/bypass of safety switches
How to Fix / Troubleshooting
Danger: This is a serious safety fault. Unplug the microwave immediately and do not use it until repaired.
- Step 1 – Do not operate: Do not attempt to use the microwave with this symptom; microwave energy may be present with the door open.
- Step 2 – Inspect door switches: With the unit unplugged, remove the outer cabinet and locate the door interlock switches. Check for signs of melting or welded contacts.
- Step 3 – Replace faulty switches: Any switch that does not change state correctly when the door is opened/closed must be replaced as a set with the correct Swan-compatible interlock kit.
- Step 4 – Professional verification: After replacement, a leakage test with a microwave leakage meter should be performed by a qualified technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Door Interlock Switch Set
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