Smelly air conditioner rooftop rv
Hi, If its a smell other then electrical burning, I would say it is coming from the evaporator coil inside. Take out the filter and clean it if it is the washable type and try and clean the coil. They make coil cleaner you may be able to get at your RV dealer to do this. This is the only thing I can think of that would have any odor. Unless there is something outside it is drawing in. The system is sealed and would not emit any odors other then a hot motor. You can check up top by removing cover to check the motors and to see if any critters have crawled inside. Let me no, keep me posed on what you find and if you need more help.
Sincerely,
Shastalaker7
PS Check the indoor blower motor also, it may be getting hot and ready to fail.
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