The sad news is that any purported manual for this item raises a warning of being a "risky site" which could download malware. At least that is what my Malwarebytes pops up. Several sites simply refuse to download, making me think my anti-virus is blocking them, probably for a good reason. The Sunbeam site offers a list of instruction manuals but does not include this particular model. That can't stop you from inquiring via their product support. There are sites which have parts for the device but I simply can't find a troubleshooter for it. But you can take a look at this video: https://www.youtube.com/watch?v=kbmXcmGRkNU
It is under warranty. contact the maker. If you try to fix it is will void that warranty. The only thing you can do is routine cleaning and descaling and changing the filter.
SR4505Q3B There is a thermostat for the compressor that is wired into the compressor component which when a goes bad it won’t cool anymore. If your compressor gets too hot it would just stop.
