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  1. #1
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    Daikin mono bloc low temperature



    Hi we have a client and his system cuts off after two hours this is on heating 11 radatiors on a low temperature this is only 6 months old what would cause this to cut off if you could help please



  2. #2
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    Re: Daikin mono bloc low temperature

    Are there any fault codes showing?

    What are the operating temperatures?

    Does it restart?

    We can't see the system so some help needed.
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    Re: Daikin mono bloc low temperature

    Hi the temp is on 55 no fault codes are coming up also I switch back on and this will run another 2 hours

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    Re: Daikin mono bloc low temperature

    Slowly pulling teeth he continues...

    Please give us some data to work with.

    A set point of 55C tells us very little about what is happening.
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    Re: Daikin mono bloc low temperature

    Hi

    we have 11 rads of one Daikin monobloc of 16kw 3 phase our outdoor temp at night is 12 degrees with day time of 24 when we run the system at 40 degrees from controller works great when this is on 55 degrees the system shuts off check for and air all ok, water ok hope this helps uand thanks for your time

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    Re: Daikin mono bloc low temperature

    Diificult to second guess this one. There are a few possibilities that it could be and I would not want to jump to an incorrect conclusion.
    As it would appear to possibly be time related, check that there are no strange timer settings invoked.
    Mobile A/C at its best, see avatar.

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    Re: Daikin mono bloc low temperature

    Hi

    i checked all timers

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    Re: Daikin mono bloc low temperature

    You should read service manual and find what function alarm is having 2 hours delay before alarm is activated!

    For further help, you should post model name!
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    Re: Daikin mono bloc low temperature

    I read the service Manuel also it a 16 kw Daikin mono bloc heating only

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    Re: Daikin mono bloc low temperature

    Quote Originally Posted by eurocooling View Post
    Daikin mono bloc heating only
    That is not model name!
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  11. #11
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    Re: Daikin mono bloc low temperature

    The model number can be found on the data plate, which is usually on the external surface of the unit.
    Mobile A/C at its best, see avatar.

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    Re: Daikin mono bloc low temperature

    Hi the model number is EDHQ016BB6V3
    heating only hope that helps 3phase so well

  13. #13
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    Re: Daikin mono bloc low temperature

    Have you checked that the field settings are correct for the installation?

    Have you performed a test run and did it complete satisfactorily?
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    Re: Daikin mono bloc low temperature

    Hi I have done a test run all ok since I drop it to 40 it's working really good maybe at 55 with outdoor temp at night of 15 there is a reason why it cut off

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    Re: Daikin mono bloc low temperature

    Domestic hot water tank is installed or not?
    What is your 8.01 field setting?

    (b) Heating/cooling or domestic water heating mode can be restricted by schedule timer and/or field settings (4, 5, 8).
    [4-02] Space heating off temperature: outdoor temperature
    above which space heating is turned off to avoid overheating.
    It would be best that you post here all your field settings!
    Last edited by nike123; 15-11-2017 at 07:32 PM.
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  16. #16
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    Re: Daikin mono bloc low temperature

    How does it perform if you run it under weather compensation?
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    Re: Daikin mono bloc low temperature

    It run great at 40 it's very rare we gets temps below 6 degrees

  18. #18
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    Re: Daikin mono bloc low temperature

    So you are setting at 40 not under weather control?
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    Re: Daikin mono bloc low temperature

    Yes it's set at 40 and working perfect if I set at 55 cuts off

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    Re: Daikin mono bloc low temperature

    Quote Originally Posted by eurocooling View Post
    Yes it's set at 40 and working perfect if I set at 55 cuts off
    If that's the case, I would be looking at the condensing side of the system
    I'm back on the Pale

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    Re: Daikin mono bloc low temperature

    It could be reduced water flow or potentially an air bubble causing reduced flow. if the system works fine when set at 40degC, there may be insufficient heat transfer at the elevated temperature. There should be a minimum deltaT of 5degC. 55degc at right at the top end of the capability of the unit. Possibly the heat loss of the system and building prevents the system from achieving 55degc and the unit may be cutting out on high compressor temperature. This would not necessarily indicate a fault code as the system would eventually stop and then restart after a time period.
    Mobile A/C at its best, see avatar.

  22. #22
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    Re: Daikin mono bloc low temperature

    Thanks Hyper

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