Thread: KitchenAid Microwave Hood combo - no lights, doesn't work but clock and timer work

Ok, so I took off the pad cover to look so obvious signs of problems. While the panel was off, I tried the lights and they worked. so I thought loose connections somewhere and checked. I didn't find any, but figured that may have been the issue. Well, not so much. The fan doesn't work and neither does the heating function. A web search suggests others have had this issue and it was related to the board being bad. Before I go down that road, I'm wondering if anyone has dealt with this?

Thanks,
Brian

Hi,

I tried to heat food the other day and it allowed me to enter a cook time and even started to count it down when I hit start, but the unit was not functioning?

That is normally an door switch/door switch mechanism problem.

LINK> Microwave repair information and lots of questions and answers, magnetrons, capacitors, common microwave problems, what might be wrong with my microwave, microwave fault codes, F1, F2, F3
LINK> CAUTION WHEN REPLACING LATCH SWITCHES
LINK> Most microwave door switches can be tested for continuity to see if the switch has failed

KHMS155L

Thta is part of a full model#.....17 models start with those digits.

jeff.

Okay, so along with not heating, the fan does not work. Is that still a latch switch issue?

so along with not heating, the fan does not work. Is that still a latch switch issue?

More times than not....control counting down, light may be on or off, no fan, no cooking and no turntable is a door switch/door switch mechanism problem.

jeff.

Ok, I changed out the switches and still no fan or heating? Any other places I should look?

Ok, I changed out the switches

Did any prove to be bad? How where they checked?

and still no fan or heating?

What is happening...exactly?

jeff.

Originally Posted by jeff1

Did any prove to be bad? How where they checked?



What is happening...exactly?

jeff.

I checked them for resistance and got it with them both opened and closed.

Presently, what's not working in the fan and it's not heating. The turntable works, the lights work, timer, clock all work.

I checked them for resistance and got it with them both opened and closed

They checked ok?

Presently, what's not working in the fan and it's not heating. The turntable works, the lights work, timer, clock all work.

Recheck the upper switch, make sure the door latch is tripping the upper most switch....if it is and the correct switchs are closed when the door is open and correct switches are open when the door is opened the smart board would be the next suspect.

jeff.

Originally Posted by jeff1

They checked ok?



I don't think so. I got resistance with them opened and closed, so think that means that they are preventing the current from flowing thru which would prevent the oven from functioning properly.

Recheck the upper switch, make sure the door latch is tripping the upper most switch....if it is and the correct switchs are closed when the door is open and correct switches are open when the door is opened the smart board would be the next suspect.

jeff.

I was fiddling with the door when the unit was running (not heating but turntable, light and vent working) and it shut off when I pushed the door up. I assume that is the switch indicating that the door is not closed properly so it defaults to shutting down. I thought that that made sense with regards to safety and assume it was operating correctly.

I'm wondering at what point I should pull the trigger on replacing the microwave instead of repairing it. It seems like there are enough problems with this manufacturers and model that this isn't going to be the only time it craps out on me.