Question about Dometic Rooftop RV Air Conditioner

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Rv ac modle 57915341 not blowing cold air - Dometic Rooftop RV Air Conditioner

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  • Dometic Master
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Make sure fan on auto if ok bad compressor or cooling unit

Posted on Oct 06, 2017

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Posted on Jan 02, 2017

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SOURCE: ac blowing hot air instead of cold

Check for the following problems
(1) Check if compressor is geting power
(2) Check if system have Refrigerant in it
(3) Check if pressure switches are operational
(4) Check Thermostrat setting.
(5) Check for dirty or block condenser or evaporator

Send feed back if you solve problem

Posted on Mar 27, 2008

  • 77 Answers

SOURCE: ac BLOWING HOT AIR INSTEAD OF COLD

Check to see if your outside unit is running. If not, check the breaker. If it is running you may have an issue with the reversing valve. It looks like three lines coming out of the top and one on the bottom. Trace the wires back to see that they are tight and secure. Of course, TURN OFF THE POWER first. good luck.

Posted on Apr 18, 2009

  • 4 Answers

SOURCE: carrier air-v AC is not blowing cold air

There could be a freon leak, or just low freon levels. If this is the case, you have to call a certified a/c technician to recharge your system.

Posted on May 19, 2009

  • 587 Answers

SOURCE: carrier RV AC is not blowing cold air, compressor

If the compressor is running and the air is cool but not cold it's probably low on refrigerant.

Posted on May 20, 2009

SOURCE: air is not very cold on a rv roof top ac what

You should have the manual for this unit handy and as far as recharging tools go. You only need a can of R134a *(if the unit is R12 you need to buy upgrade adapters since R12 is no longer sold) Run the unit and put the R134a filler line on the low pressure side of the compressor *(from manual...dont guess as trying to charge the high pressure side is VERY dangerous). Get the charge just into the Green zone on your charger and that is it! Try not to fill too high in the green zone....I know it sounds funny...but AC's usually work better when they have the low end of their optimum fill. R134a doesnt work as well as R12 so be sure you buy the R134a with cooling enhancers. Your local Autozone can guide you to the right filler/product combination.

Good luck and be careful!

Posted on Jun 30, 2010

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Sounds like you have dirty condenser coils. Remove the upper shroud and check the condenser for clean. Take a water hose and gently spray out the coils paying special attention not to bend the coils over with too much pressure. This will allow more air movement through the coils and give you better cooling efficiency.

Hope this helps,

Jeff

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