AC blowing warm air
Another thing to try on a unit as old as yours is to buy some cleaner for the air conditioner fins. My neighboring RVer friend had that problem. The air conditioner would come on, but then soon it would go back off allowing the RV to warm up inside. After his was cleaned, it worked like brand new.
It may be time for all of us to think about cleaning the fins because they certainly do collect dirt and debris. I’ve seen insect bodies and lots of black dirt flow out of the fins.
Cleaning will extend the life of an AC unit and the unit will produce cooler air.
Here is a link to the cleaner he used:
https://a.co/d/etNIF3f
The cap has a comb that can be used to straighten any bent fins. Another step that helps improve efficiency.
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