Question about Fujitsu 24C1 Air Conditioner

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Hi, I just bought a house that has a a/c Fujitsu ASU12CQ. It seems to be working fine (cold air coming out) except that once in a while, it makes a big growling noise that last like 2 or 3 seconds and it stops. It feels like something vibrating inside. Sometimes it will do it every 5 minutes so it gets annoying. It also does it when we shut it off maybe 5 times in the next 20 minutes it's been off. Any idea what this could be? I've read the manual and couldn't find anything about this. No lights are blinking, but could this have to do with the filter needing to be clean or replace? Thanks for your help!

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That noise is just the refrigerant moving inside the unit...
It is nothing to be concerned about and is perfectly normal...
Can be a bit annoying... but you will get used to it..


Posted on Aug 05, 2010

  • carorules Aug 05, 2010

    Wow ultra-fast response, thanks.

    The manual said that the refrigerant moving inside could make a slight noise.. I'd say "slight" is an understatement; we hear it through the whole house and it wakes us up at night. I hope we do get used to it.

    I guess I'm just confused cuz I know a few people with a/c at their house and none of them do that sort of loud noise.

    Thanks again!



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