Disclaimer: I’m not a certified RV technician merely an RV owner. This post and video should not be taken as instructional. If you decide to do the things depicted in the video, do the research and be aware of all risks involved. I accept no liability, you have been warned. – Ray
First I TURNED OFF ALL POWER to the Air Conditioner by unhooking the AC power cable and disconnecting the 12-volt batteries.
I show how I clean both the evaporator and condenser coils and straighten bent fins on both. I then reseal the inside chamber with new aluminum ducting tape and clean the sponge input filter.
I also add some lubricant on the shaft of the fan motor and inspect the unit. I check for debris and clean the chassis. Finally, I test the system for optimal cooling temperature differential using an IR gun.