MODEL R-8476 FUSE BLOWS WHEN SWITCHED ON

Fuse holders sometimes become weak due to heating. If the fuse is not held very tightly by the holder, the fuse will blow because it gets hot, not because the current exceeds the fuse's rating. If this is the case, replacing the fuse holder would be in order. This is not to be confused with the situation where the fuse blows when the door is opened or closed. In that case it's a door switch sequencing issue, or a bad switch.

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You almost certainly have a shorted high voltage capacitor.

See the safety warnings and help information here.

Chances are you will have to remove the oven from the wall to replace it.

You can download Whirlpool owner's manuals and installation instructions here.


You can find helpful exploded view diagrams and order parts by entering your full model number here.

It depends on which fuse and when it blows. Wish you had mentioned that.

But usually it's a defective door switch or door switch mount.

If the fuse blows at random times while it's cooking, it may just be a loose fuse holder. Those have to be replaced due to metal fatigue, not just squeezed tight with pliers.

If it blows as soon as you hit "Start" to begin cooking, you have a shorting high voltage capacitor.

If it blows when you open or close the door, you have a loose or defective door switch or latch.

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

The magnetron is shorted or the inverter board is defective if microwave is 7 years old or less.

in most cases the reason for microwaves shutting down without warning is the fuse. in some cases the fuse will fail at its own fault. to test the fault we would do a tollerence test on the unit. but the best way for you to test it is to replace the ceramic fuse with another of the same value. if the unit works then its a faulty fuse. if the unit blows the fuse then the unit has a fault in the power supply that needs to be repaired by a service tech.

that would be a shorted or "bridged" heating element .. thats replaceable by a repairman or someone familiar with electrical things ..

here is where you can order parts and instructions for your dryer
http://3hler5437jq0.theappliancepartswarehouse.com/

here is where you can purchase a service manual if you need more information .. ($10) ...
http://www.manuals-in-pdf.com/index.php?main_page=advanced_search_result&keyword=3hler5437jq1&forward=plist

change the units internal ceramic fuse and try this,may just be a fuse or if new one blows then could be h.v. diode.capacitor,thermal fuse,magnetron tube

replace the fuse see if it blows again you can get those at radio shack 250 volt either 15 or 20 amp get 3 or 4 of em

you will probably find that the fuse blowing is due to door switch adjustments, most unit have 3 switches 2 on the door catches and one that is crowbar protection. the 2 door catch switches are normally closed with the door open and the crowbar is the opposite. if they do not change at the correct time when closing nthe door the fuse blows

1.Problem with monitor door switch or
2. Problem with high voltage condenser.

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