I have an LW1217ERSM window unit. The compressor will not turn off even if I press off

Model # BXA718D200A0 MFR DATE Y37 TEST PSI 21A930504 150 Been living in this apartment for two years now. Told the land lord that there is mold in the drip pan, he had the coils cleaned but not the drip pan saying that the entire coil would have to be cut out and the pan cleaned then replaced. The cost is too much so they say and he refuses to do it. Not going to get kicked out of here because we keep insisting. We need another option. Any ideas for a lay person such as myself? I need help. The smell is awful. When we turn on the heat it's ten times worse. It looks at though the pan and AC coil are not one piece but there's a pan inside of a pan so to speak, cleaned off as much as the mold as I could but can't get to the back side of the pan to remove what's left there and the pan beneath the thin layer of aluminum that the coil is sitting on is packed with this greasy mold. I'ts as bad as automotive grease when it's worn out. There's just no way to get to it without removing the coil. I am not capable of shutting off the freon etc to avoid fatal mistakes. I read on a few sites that with the newer AC models it is possible to just lift the A frame Coil up out of the pan without having to disconnect anything and then slide the pan out and then slide it back in after cleaning. I don't see how that's possible if at all with this unit. Need some pro advice as to which unit I have and how it's built as well as options ass to how to get the nold out. If it's not possible to remove the pan then I am looking for something that will removed the mold where I'm not able to scrub it off somehow. Been trying to look up the model # and not finding anything.