I'm posting this as a solution after I went through several different web sites to and trial & error to fix my "DOOR" error code problem.
question I submitted can be summarized: I need to replace the 15A interlock fuse.
Can you point me to a manual that describes where this fuse is and how
to replace it?
Here's the answer for the KitchenAid KEMC308K series.
The service manual is behind the control panel on the left hand side.
For my built-in, I turned off the power and removed the oven from the
cabinet, exposing the sheet metal shroud. Remove the top piece and
there on the left hand side is the service manual.
2) The manual
indicates the fuse is in the right rear of the microwave. This is
correct, but it is actually accessible through the right side.
long as I slogged though this, I thought some other people would like
to know how to solve the "door" error problem. It could be caused by a
faulty control panel, but before going there, the check the switches
and fuse in the door interlock circuit. Check this link for a
the rear sheet metal shroud and you see nothing but the back and side
of the microwave. Remove the right sheet metal shroud and expose the
right side of the microwave. This panel has a bunch of warnings, heed
them. However, the are missing one: SHARP EDGES. Think about putting
tape on the exposed sheet metal edges. Remove the panel and expose the
"guts" of the microwave: Rectifier, wave guide, magnetron, capacitor,
and such. The interlock fuse is next to the capacitor contacts. Safely
discharge the capacitor (method described in numerous places via google
search and the link http://www.gallawa.com/microtech/safety.html ).
After the capacitor is discharged, remove the fuse, verify it is blown
using an ohm meter (ceramic fuse - you can't see inside). The fuse is
actually (despite what the tech manual says) a 20A 250V fuse. Available
at radio shack in a pack of 4 for $2.99. Install the new fuse.
long as you have this much done, may as well ensure that the
microswitches still work. Remove the contacts from the microswitch.
There are 2 close to each other. From the 3rd contact to these, one
should open when the other should be closed. Ensure that this is true
and that when the switch is depressed, the state reverses (the contact
that was open is now close & connects to the common). Do this for
both door-closed sensing microswitches and replace the wiring to the
microswitches. Replace all the microwave side panels and the sheet
metal shroud. Turn on the breaker and hopefully, as it was on mine, the
"DOOR" error message is gone and it starts up normally.
when the power comes on the unit runs a self test, lots of blinking
lights followed by a power-failure error code when the power comes on.
I think it was pf .d=30. Hit cancel and it goes away.
So, this is a pain to do b/c there are about 40 sheet metal screws to deal with and one has to be careful discharging the cap. Pulling the oven out of the cabinet was the hardest part. I build a table at the same height and just slid the entire unit right onto my "work table." If I had to do it again, I'd have the entire thing done in under 30 minutes.
Hope this helps someone else!