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I have a carrier model pv 48nboo6. It worked fine intil I had it checked and they said the the evaporator coil and expansion valve needed to be changed out, which was done under warranty. This was done and it now sweats so much it has shut down at times when the pan fills up. They have put in new dry insulation and slowed the fan but it still sweats. What needs to be done they do not seam to know.

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  • juelscarlson Sep 07, 2010

    Until they replaced the coil the AC worked fine for 4 years and we never had any sweating or water in the pan. Here is a picture of the problem.

  • juelscarlson Sep 07, 2010

    B4 they put in a new coil we had no water problem.



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Actually slowing down the fan will only make the condensation problem worse....they should speed the fan up, not slow it need MORE air flow....also the expansion valve may need to be adjusted, but many A/C techs do not know how to do that...the valve needs to be adjustede so that the coil does not run quite so cold...
The best thing for you to do is to call Carrier directly and ask them if there is someone else they could send out to work on your system or if they could give direct factory assistance to the people you have....they should make everything right under warranty for you. I have found that calling the factory direct can get great results... they want to make sure that you are totally happy with your system!

Here is the link to Carrier


Posted on Sep 08, 2010


I would install a dehumidifier unit and increase the fan speed to decrease the temperature drop across your A/C coil. Your excess condensation forms because the temp difference and humidity. The tempurture difference can also be overcome by adding more insulation

Posted on Sep 07, 2010


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