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  1. #1
    Join Date
    Aug 2016
    Location
    Uk
    Age
    37
    Posts
    23
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    Air conditioning heating but not cooling help needed

    So today I had an Fujitsu unit going into heating fine, but when I asked for cooling, it would come on for 20 seconds down to 9 deg Celsius then start blowing ambient air. Fan would ramp right down and turn off.

    I tested the pressures and in heating I'm getting 30bar and 35 bar, in cooling I'm getting 7 and 10 bar, tested the reversing valve and that's fine.
    Filters and coils clean.

    Any ideas would be great.

    It's a 15kw running two cassettes, so I have dismissed it being anything yo do with indoor sensors.

    Room temp was in the 20's
    Last edited by danielc4514; 16-04-2019 at 09:11 PM.

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