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  1. #1
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    chiller compressor high pressure alarm



    hi guys.

    im have been in the air conditioning trade for 9 years now mainly doing installs on vrvs and split systems.

    today i got asked to look at a climaveneta chiller which feeds a big shop in a shopping centre <1 of many>

    when i got there on the control panel it says 'compressor high pressure alarm'

    there was no way of runnig the system until the fault is rectified. coils are clean and so are filters fan motors seem good. i didnt want to go any further as i am not confident enough and didnt want to balls it up even more.

    i woud really like to know what could be causing this as i hate being defeated could anybody please shed some light on what could be causing this fault.

    many thanks



  2. #2
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    Re: chiller compressor high pressure alarm

    High pressure above settings will stop the compressor and set alarm off.

    The reason can come from a few places, some of condenser fans not running, too much refrigerant, air in the system, a nylon sheet blocked the entering air, faulty high pressure sensor.

  3. #3
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    Re: chiller compressor high pressure alarm

    There is only 1 fan for condenser the other fan is inside the unit attached to a belt. 1 thing i forgot to .ention is they are ducting their heavy duty dishwasher into the a/c duct and obvioisly when the unit doesnt run the steam is backing up the duct and dripping all over the ceilings

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    Re: chiller compressor high pressure alarm

    What has ducting and dishwasher discharge got to do with a chiller?

  5. #5
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    Re: chiller compressor high pressure alarm

    Ok maybe its not a chiller its an ac unit on the roof a package unit

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    Re: chiller compressor high pressure alarm

    can we clarify-the clima venta chiller on the roof- has 1 fan on it, this chiller serves a shopping ctr, so were talking big stuff
    a commercial dishwasher exhaust is ducted onto the return air of the air handlng/fan coil unit- which is belt driven.

    -whats the model number of the chiller
    -ur fault is with the chiller -hp alarm, requires resetting then moniter running pressure,td accross cond coil,checking the running current of the outdoor fan motor- ensuring the overload is rated 125% over the running current.
    find the hp switch if its manual reset, isnt nuisance tripping
    try these codes for alarm resetting
    125
    348
    0348
    9990

  7. #7
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    Re: chiller compressor high pressure alarm

    Do u know what type of ac im talking about as i said i only really work with vrv and split systems. Its just trally bugging me and want to get my head round it

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    Re: chiller compressor high pressure alarm

    chiller - water circuit
    split- gas circuit
    Last edited by install monkey; 05-09-2013 at 07:58 PM. Reason: the more info u give the better the advice- allegedly! haha

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    Re: chiller compressor high pressure alarm

    It is r407c with 1 3phase compressor. I cant reset it it says the fault needs to be rectified before you can run system

  10. #10
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    Re: chiller compressor high pressure alarm

    The motor with the belt blows the air into the building and the fan on top of the condenser rejects the heat right? Then at the end other end of unit is where the duct comes back and where they are rejecting their dishwasher discharge

  11. #11
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    Re: chiller compressor high pressure alarm

    manual hp reset - on the discharge pipe- or ranco/sanyagia/penn tiny reset latch

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    Re: chiller compressor high pressure alarm

    rooftop unit
    Quote Originally Posted by paulrs86 View Post
    The motor with the belt blows the air into the building and the fan on top of the condenser rejects the heat right? Then at the end other end of unit is where the duct comes back and where they are rejecting their dishwasher discharge

  13. #13
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    Re: chiller compressor high pressure alarm

    Sorry i dont understand. How do you manual reset?

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    Re: chiller compressor high pressure alarm

    little push button on the pressure switch

  15. #15
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    Re: chiller compressor high pressure alarm

    So if fans and coils are good where would i best best to look next? Will i deffinatrly be able to do a manual reset?

  16. #16
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    Re: chiller compressor high pressure alarm

    HighPressureCutOutSwitch.jpgred button .......

  17. #17
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    Re: chiller compressor high pressure alarm

    hp switch will be near the compressor (big heavy thing that chuggs)- mounted on the discharge pipe (smaller hot pipe) if theres no button to press on the pressureswitch, u may need to aknowledge the alarm on the touchscreen controller( try the codes earlier mentioned for access to reset fault)

  18. #18
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    Re: chiller compressor high pressure alarm

    Thanks alot so once ive reset it il be able to run the unit and check currents and pressures

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    Re: chiller compressor high pressure alarm

    or one of these
    images.jpg

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    Re: chiller compressor high pressure alarm

    hopefully- im lookin for climaventa kit to see if u recognise it as were clutching at straws

    Quote Originally Posted by paulrs86 View Post
    Thanks alot so once ive reset it il be able to run the unit and check currents and pressures

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    Re: chiller compressor high pressure alarm

    http://www.climaveneta.com/GLOBAL/Pr...rooftop-units/
    click on link above- is it one of these??- let us know model number

  22. #22
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    Re: chiller compressor high pressure alarm

    I got mixed up its not climaveneta they was from yesterdsy i cant remeber the name air something air conditioning big blue panels lol

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    Re: chiller compressor high pressure alarm

    Typical im such a twat

  24. #24
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    Re: chiller compressor high pressure alarm

    BLUEBOX!- u sure???- u deffo working on the right system???-
    the pressure switch on the hot pipe should be the same -as for passwords-
    300 Maint.200 Prog.
    400 Store
    0003 Factory
    0001 Time

    feel sorry for any moderator who has to clean this thread!
    Quote Originally Posted by paulrs86 View Post
    I got mixed up its not climaveneta they was from yesterdsy i cant remeber the name air something air conditioning big blue panels lol

  25. #25
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    Re: chiller compressor high pressure alarm

    Ah that danfoss dual pressure control is on the unit

  26. #26
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    Re: chiller compressor high pressure alarm

    Its not called bluebox ut it looks like a bluebox manufactured in 2006

  27. #27
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    Re: chiller compressor high pressure alarm

    before we continue- can u comfirm its one of these
    http://www.bluebox.it/en/

  28. #28
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    Re: chiller compressor high pressure alarm

    I k ow the maint and service passwords one is 0003 and other is 0002 i think

  29. #29
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    Re: chiller compressor high pressure alarm

    http://www.dulux.co.uk/colours/blue/
    what shade is it??
    Attached Images Attached Images

  30. #30
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    Re: chiller compressor high pressure alarm

    Maybe royal blue

  31. #31
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    Re: chiller compressor high pressure alarm

    So far I'm amused, it might even work by dawn...

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    Re: chiller compressor high pressure alarm

    It was called air ________ air conditioning

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    Re: chiller compressor high pressure alarm

    airedale????

  34. #34
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    Re: chiller compressor high pressure alarm

    http://youtu.be/RWgR-4dcbc4


    blankety blank!!!
    Quote Originally Posted by paulrs86 View Post
    It was called air ________ air conditioning

  35. #35
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    Re: chiller compressor high pressure alarm

    Nope not airedale ive never heard of them before.....

  36. #36
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    Re: chiller compressor high pressure alarm

    different approach-
    what company/shop was the customer??
    wheres the site?
    can u spot it on google street maps??

  37. #37
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    Re: chiller compressor high pressure alarm

    can the name on the thread be changed to
    blue thing on roof - no name - no worky??

  38. #38
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    Re: chiller compressor high pressure alarm

    Hahahahaahahahaha

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    Re: chiller compressor high pressure alarm

    Looked on google maps too blury to see them really

  40. #40
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    Re: chiller compressor high pressure alarm


  41. #41
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    Re: chiller compressor high pressure alarm

    Air France?

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    Re: chiller compressor high pressure alarm

    Surely this has to be a joke.....

    Can you help me fix it but I don't know what 'it' is.

    My advice would be to leave well alone!!
    The difference between genius and stupidity is that genius has its limits.

    Marc

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    Splits and vrv's never heard of Airedale...

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    Re: chiller compressor high pressure alarm

    this thread is so funny can the original poster please give more info.

  45. #45
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    Re: chiller compressor high pressure alarm

    9/10 for Install Monkey so far.....if his patience lasts for another 10 posts then I might upgrade my mark to 10/10

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    Re: chiller compressor high pressure alarm

    hi guys just to let you know it was a faulty high pressure sensor all sorted now

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    Re: chiller compressor high pressure alarm

    What type of unit was it?
    The difference between genius and stupidity is that genius has its limits.

    Marc

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    Re: chiller compressor high pressure alarm

    been trying to find that out for the last 45 posts!
    Quote Originally Posted by marc5180 View Post
    What type of unit was it?

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