Question about KitchenAid KHMS155LSS 1000 Watts Microwave Oven
And also the lock mechanism cannot be turned off, although I unplugged the machine while holding the Cancel key, then releasing.
Your membrane keypad has failed. I'm guessing it's giving an error code of F2 also?
On the KHMS155LSS# models, the membrane keypad is available as part of the control panel frame assembly which comes with a new keypad.
Replacing this is actually a pretty easy do it yourself job.
At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
Next, disconnect the keypad strip as shown in the photo below, then remove the screws that hold your circuit board in the old frame.
Then carefully (since the display is made of glass) move your circuit board to the new frame, and reassembly is the reverse of disassembly.
You can get the control panel assembly here.
You can also find helpful exploded view diagrams at that link.
Just enter your model number (as KHMS155LSS# for example where # is the last digit) without the dash.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Jul 11, 2010
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Posted on Jan 02, 2017
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Jun 22, 2017 | Microwave Ovens
Hey JT Tai, I appreciate your post!
The symbol at the top left hand side of your display could be child lock symbol or vent symbol. If it is the child lock you should be able to press and hold the stop/cancel button down for 3 seconds to release the child lock.
If the light is on for the vent I would seek assistance from a professional for proper diagnosis and repair to be completed on your microwave. I hope this is helpful. -Matt
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