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Thread: fujitsu

  1. #1
    Join Date
    Feb 2005
    Posts
    38

    fujitsu

    Is there a way to check to see if the charge is right on a multi zone 24rmlq other then weighing the charge?

  2. #2
    good questuon curious about that also

  3. #3
    Join Date
    Nov 2006
    Posts
    523
    Turn on both units, cooling, fan high, test run. Should start flashing red & green continuously and blow cold. Pressure should read 116-118

  4. #4
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Weigh it in, this is the only correct way to check charge.
    Karst means cave. So, I search for caves.

  5. #5
    Join Date
    Feb 2007
    Location
    18951
    Posts
    1,593
    Quote Originally Posted by mississippi View Post
    good questuon curious about that also
    Me too. A long time ago someone told me there were oil flow issues with this type of system, and the oil could get stuck in one inside coil. Don't know how true it is.

  6. #6
    Join Date
    Nov 2006
    Posts
    523
    You shouldnt have to weigh in any charge on a dualzone 24rmlq as it comes precharged from the factory for the maximum lineset length. As for oil return, that shouldnt be a problem because the only thing traveling through the pipes is gas and some atomized oil. The expansion device is located on the outdoor unit and both pipes are on the low side of the system, which is why they both need to be insulated seperately.

  7. #7
    installed one this week pretty cool that both lines are on low side of system took awhile for some guys to understand that.so if my line set is 15' or 30' the charge in the condenser will be o.k.

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