Microwave/Oven Combo, KEMC308KSS01, having the same issue with the Microwave "DOOR" on display when press START.

[JamesChan]

That's correct.

Nope. Read post #60. The monitor door switch is a deadman switch. It's designed to keep the microwave from working if the door is open by shorting L1 and N together. If the primary switch doesn't open before the monitor switch closes, the fuse blows. Make sure you have the switches wired correctly and the wires are on the correct switch terminals.

Rick, Thanks for your prompt respond, we're really appreciated.

We tested continuity while the switches are in the holders and tested good but still say DOOR on display.

Is there a way to test the wires or connections from switches to the board? It seems to me that we might have a bad connection from switches to control board. I re-seated all connections to the board again. Clock and Oven are in operation. We could turn Oven on/off and we were able to set the Clock.

I took the pictures of old connections before swapped them out. They should be correct but I attached them here for your review.

Thanks again for taking the time on this. We really appreciate your trying to help.

 

[rickgburton]

Circuit shown in standby/off mode with microwave oven door closed.

 

[JamesChan]

Nice diagram but I have no clue what to do with it.

We need instruction on how to test connectivity between switches and control board.

After replacing switch last weekend, we had it working but before putting microwave back in the self, we tested it again to make sure and it created spark and went to same problem with DOOR display on panel when press START, not sure if it created short circuit somewhere? Since the incident, we replaced line fuse and 3 switches.

Right now I have couple questions:

1.) Could the wires went bad? or No?
2.) Is it possible to test connectivity between switches and control board?
3.) Could switches wires be tested and replaced?
4.) were switches wires connection look good to you? from last post.

Thanks in advance!

 

[rickgburton]

Nice diagram but I have no clue what to do with it.

On some machines there's just so much you can do online