F5
Galanz
Safety Interlock Chain Error
Microwave displays F5 and will not start; may be associated with door or safety circuits.
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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
Failed monitor switch, Incorrect door switch wiring, Blown internal safety fuse, Shorted interlock circuit on PCB
How to Fix / Troubleshooting
Safety: Unplug the microwave. The interlock system prevents radiation leakage; improper repair can be hazardous.
Steps:
- 1. Inspect door switches: Access the interlock assembly and verify that all switches are correctly wired according to the wiring diagram.
- 2. Test monitor switch: The monitor switch should be closed when the door is open and open when the door is closed (opposite of primary switch). Replace if it does not operate correctly.
- 3. Check internal fuses: A technician should test and replace any blown internal fuses and correct the underlying cause.
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Repair Difficulty
Professional Required
5/5
Required Part
Door Monitor Switch
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