Dometic Refrig is acting up - what are my options

If your refer is in a slide out there may be two fans that help vent it. If one fails you will have issues. If two fail you definitely will have issues.

Also check your drain tube. Very important that it is not cracked. If it is warm air can enter and cause similar issues. In some setups the tube should have water in it as a drip loop to keep air out and let condensation out as well.