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My ac ices up and doesn't put out cold air - Dometic Rooftop RV Air Conditioner

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RV AC is not my specialty but icing up is caused by only one thing; a restriction in the refrigerant line. The restriction is usually caused by the unit being low on refrigerant (needs to be recharged) but could also be from another cause such as one of the lines being bent/kinked or a compressor problem that let oil or something else into the lines.
Since the unit is probably low on refrigerant charging it up will cure the problem, however you'll still need to determine why it's low - just older and the leak was over time or a leak in some component of the coil or line set.
You may be able to recharge it yourself or your RV service man can either do it or point you to an HVAC tech with the appropriate experience.
Good Luck

Posted on May 26, 2010


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SOURCE: AC not blowing Cold Air

take ac cage off or ac out of window so insides are exposed take out side and use water hose and clean out side coils and in side coils dont bend these coils or u will be sorry,,,clean out good if not stoped up have freon put in

Posted on Jul 03, 2009

  • 55 Answers

SOURCE: The inside RUUD AC unit has ice and no cold air is blown

it is likely low on coolant or as some say "freon" that or the indoor fan motor has not run properly. let it thaw completely by shutting it off and just turning on your fan switch from auto to the on positon. if you begin to feel air flow eventually you need coolant added b/c you probably have a leak from the system being old

Posted on Sep 13, 2009

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