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VRC 470F - No desirable temperature in set back display

Discussion in 'Plumbing and Central Heating' started by Harry Bloomfield, 3 Feb 2019.

  1. Harry Bloomfield

    Harry Bloomfield

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    During the daytime period, the 470F shows the actual temperature and below it the 'desired temperature'. During the 'set back' night temperature, it only shows the actual room temperature. Is this normal?
     
  2. Bill1958

    Bill1958

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    Just checked ours. In setback mode the desired temperature is shown along with actual temperature.
     
  3. ScottishGasMan

    ScottishGasMan

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    Have you got the thermostat (in the installer level settings) set for "set back" or "eco" ?
     
  4. Bill1958

    Bill1958

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    Set-back.
     
  5. Harry Bloomfield

    Harry Bloomfield

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    Thanks, I will have to try to find that setting, to see what happens if I change it. As has been said before, the manual is useless - I have working on a process of suck and see.
     
  6. Harry Bloomfield

    Harry Bloomfield

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    I have changed it to Night Mode, to see what it does.

    The manual says..
    Three modes are possible:

    – ECO (factory setting): the heating function is switched off and the controller monitors the outside
    temperature.
    If the outside temperature falls below 3 °C, the controller switches the heating function on after the end
    of the frost protection delay time and brings the room temperature to the set desired "Night" temperature.
    Even though the heating function is on, the burner is only active as required.
    If the outside temperature rises above 4 °C, the controller switches the heating function off, but continues
    to monitor the outside temperature.

    – Frost protection: the heating function is switched off and the frost protection function is active.

    – Night temperature: the heating function is on and the controller controls the room temperature according
    to the set "Night" temperature.

    When installing your controller, the heating engineer can
    specify the control functions for the times outside the periods and the heating curve.
    > Discuss with the heating engineer which settings are optimum for you.
     
  7. Harry Bloomfield

    Harry Bloomfield

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    The display now shows the Desired Temperature when in the Night period..

    Thanks for the help..
     
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