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You are missing the last 3 digits of the model number. The following wiring diagram is for a KQ1
https://www.servicematters.com/d...0Sheet%20-%203979703.pdf

Most likely are a power problem, door switch, push to start relay or motor's thermal fuse.

Turn your breaker off/on a couple times, slowly or better yet measure it at the plug with a meter. Should be 240 volts between L1 and L2
Should be 120 volts between L1 and Neutral and L2 and Neutral.
Sometimes you can loose Neutral without actually tripping the breaker.
Note: your timer and heater run on 240 but the motor runs on 120.

The thermal fuse is the one on the back of the blower. See "Section 3" Item 7.
Unplug the machine, remove the wire from one site of it and measure with a meter. Should be 0 ohms.
If you do not have a meter. Unplug the unit, short the 2 wires together, tape them up so they cannot short to the frame and give it a try.
If it runs replace it ASAP as it is a safety device.

If the fuse was blown, clean and check your vent system this is the most common cause for it to go.
Also a good idea to clean the interior and the blower wheel.