Question about LG LSC091PMA Split System Air Conditioner

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One head freezes

I have a LG ac split with two indoor heads, only one head which runs most of the time (located in a computer room)is freezing, the other head( in a regular office) runs fine,what can be the problem? when the filters are clean and the fan runs good.

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  • luke bussenschutt May 11, 2010

    to test try running the freezing head by its self, if it runs fine with out freezing the problem is low gas charge.

  • Felizardo Erilla
    Felizardo Erilla May 11, 2010

    Which one have the longest piping? And how many feet?

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  • 400 Answers

You are short of refrigerant, the evaporators (heads) run in series and if you run short of refrigerant one of them will have reduced or no cooling depending on the amount of refrigerant left in the system. You should make sure that a leak in the system is found before just recharging the system or you will have to do it again in the near future.

Posted on Mar 04, 2009

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