A fuse in a microwave can blow due to several reasons, including electrical overload, a short circuit, or a malfunctioning component such as a diode or magnetron. Overheating caused by blocked vents or a malfunctioning cooling fan can also contribute to the fuse blowing. Additionally, using the microwave with metal objects or damaged wiring can create a surge that may cause the fuse to fail. Regular maintenance and proper usage can help prevent these issues.
There must be a short in the system somewhere that causes the fuse to blow.
The fuse is there to protect the wiring in your home not the microwave. Using a larger fuse than required for the wiring causes a fire hazard. You can end up burning your home down. Use only the fuse recommended.
A microwave fuse does what any fuse does. It protects both the microwave and the building's electrical from surges and short-outs.
Only if you want to blow up the microwave. That will let 20 amps go through before the fuse blows when the manufacture is telling you 18 amps max. <<>> Yes, you can use the 20 amp fuse. At 250 volts 2 amps is no problem and you are not going to blow up the microwave. On a fault current the 20 amp fuse will trip just as fast as an 18 amp fuse.
This is the starter fuse I am talking about. It doesn't blow every time. It might go weeks before it blows again.
to many plugs in at once or old circuits ECT.
A microwave fuse does what any fuse does. It protects both the microwave and the building's electrical from surges and short-outs.
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Ck the heater fan motor resistor .
Need to know which 20 Amp fuse is blowing.
Tail light assembly short
There is a electrical short somewhere...