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  1. #1
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    Thumbs up Reason for suction line very hot


    As i went for a site visit i noticed that one of the split or VRV (iam not confirm ) suction line is very hot what would be the possible cause or the unit is designed like that. to the best of my knowledge i beleive that as long as the suction temperature is low we can protect the compressor from overheat and abnormal head pressure. or this may be due to indoor or outdoor capillary can anybody brief me pls
    with regards,
    S. Balaji



  2. #2
    TRASH101's Avatar
    TRASH101 is offline Veteran Poster I am starting to push the Mods: of RE
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    Re: Reason for suction line very hot

    It may have been in reverse cycle. A brief look at a system is never enough to make an informed opinion of performance.

    If it is bothering you go and have a proper look

  3. #3
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    Re: Reason for suction line very hot

    Service valve hot or hot between reversing valve and compressor?
    The external suction line running hot means it's running on heat mode.
    The real suction line is inside the unit and runs between the reversing valve and compressor, that part shouldn't be hot at any time.

  4. #4
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    Re: Reason for suction line very hot

    I experienced da same trouble in a ac unite after investigating found compressor valves R leaking internally causing hi back prs & hi such line temp,u need to check both side prss.


  5. #5
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    Re: Reason for suction line very hot

    Compressor suction valve plate might got damaged so dischrge gas come out of suction valve...

  6. #6
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    Re: Reason for suction line very hot

    I think that depends on the refrigerant type and the circuit design. Revise the service manual of the unit and look for the suction line temp and pressure at the heating mode.

  7. #7
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    Re: Reason for suction line very hot

    most vrv systems have a computer program to see what is going on. don't go on wet finger technic whit vrv or vrf. always have a trustworthy back-up at hand.

    Ice

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