Skip to main content
R
Rank 5
razor
Rank 5
December 4, 2023
Solved

Ecodan FTC- Had a nightmare trying to balance the house temperature?

  • December 4, 2023
  • 47 replies
  • 3068 views

Hi all,

I’ve just bought a new build with a Ecodan FTC. I have had a nightmare trying to balance the house temps. Too cold. Now too hot. 
I tried the weather comp but my numbers were way out. Downstairs was ok but upstairs was far too cold. 
Yesterday I changed to auto temp which wacked the flow rate up to 45 and in turn got the upstairs to temp (although downstairs is now tropical!)

My understanding is that the auto temp on the Ecodan uses the room temp to make flow adjustments. My issue is that the room temp on the Ecodan is reading like 8 degrees. I imagine this is why it was just flat out all day long.

I see you can change the sensor to be either the FTC which it is set at and no doubt where the temp of 8 is being read from, or the TH1 to use a wireless controller.

This is where I need help. There is a wireless unit attached but I am not sure if this is the correct thing. Used to connect the app.

How can I get the actual house temp to the Ecodan FTC to take advantage of the auto temp feature?

Thanks

 

 

Best answer by juliamc

 I think you’re way ahead of me with your controls, I have a Daikin so I’m not familiar with your system. However I’ve been wondering if the wireless sensor you’re using on TH1 either is faulty or is not set up correctly? I’m assuming the controller panel is giving a correct temperature reading around 8 or 9 degrees because it’s in a garage or similar unheated space, hence needing the wireless sensor? If you have another thermometer you can confirm both the controller temp and the wireless temp that would confirm a bit more about what’s going on. Then you could place the wireless sensor alongside the controller panel and check if the readings correspond, ie the wireless should show 8 or 9 deg. 
There is this section in settings to adjust the thermistors - this might show if anything odd has been set up.

47 replies

Show previous replies
juliamc
Rank 20
juliamc
Rank 20
December 6, 2023

@amanda1 yes it’s the Melcloud gadget he has not the remote sensor. I’d love to see your heat pump in the snow !! ⛄️ 

A
Rank 2
amanda1
Rank 2
December 6, 2023

@juliamc At the moment we have only 6cm of icy snow lying. It has stuck around for a whole week due to the -12, -14,  -11 temps we have been having. But it isn’t deep. Also, Hiroheater isn’t yet really ready for his close up as he is surrounded by wooden pallets which form the base for a shelter that I haven’t yet got around to finishing...this is the snow at the moment: Hiroheater is just to the left of the photo.

 

    Emmanuelle_OVO
    Retired Moderator
    Emmanuelle_OVO
    Retired Moderator
    December 7, 2023

    Hey @razor,

     

    I wonder if these topics have any helpful information:
     

     

    Renewable Energy? Big Fan.
    C
    Rank 2
    Cold
    Rank 2
    January 8, 2024

    Hi all, had an ecodan for my 4th winter now but still not luck getting the house above 15 during anything below 4 degrees. 

    This year, I thought I would try weather compensation curve but still no luck. The Flow at present is around 50 but my rads don't feel that warm. My trvs are all on 5/max.

    My melcloud app shows a report on flow temps but there's a lot of them so not sure what they all relate to. I'm concerned about the green/black one at the bottom . Why is this only 25? please  help. 

     

    juliamc
    Rank 20
    juliamc
    Rank 20
    January 9, 2024

    @M.isterW may be available to advise, Meanwhile do you mean things are running ok above 4degrees ? Can you post a photo of your controller screen please. 

    M.isterW
    Rank 6
    M.isterW
    Rank 6
    January 9, 2024

    I think the green and black lines are used if you have multiple zones. If you don't, I wouldn't worry about them.

    What controls do you have on your system?

     

    1992 4 bed detached house. Solar PV + battery, Zappi EV charger, Mitsubishi Ecodan ASHP and i-life2 fan assisted radiators.... No gas 😊
    C
    Rank 2
    Cold
    Rank 2
    January 9, 2024

    Ftc5 or 6 in the living room (zone 1) and a basic mechanical style thermostat in zone 2, which I never touch. Many thanks 

    C
    Rank 2
    Cold
    Rank 2
    January 9, 2024

     

    Emmanuelle_OVO
    Retired Moderator
    Emmanuelle_OVO
    Retired Moderator
    January 9, 2024

    Hey @Cold,

     

    Sorry for the issues you’re having,

     

    These similar topics might have some helpful advice:

     

     

    Renewable Energy? Big Fan.
    juliamc
    Rank 20
    juliamc
    Rank 20
    January 9, 2024

    @Cold do you mean the house has never got above 15 deg during any of the 4 winters you’ve had it? Did you get it installed or have you inherited it? Have you been back to the installers to get it serviced? 

    Show more replies
    Terms & ConditionsAccessibility statement

    OVO Energy Ltd, Floor 5, Crescent, Temple Back, Redcliffe, BS1 6EZ, (Company no. 06890795) registered in England and Wales.

    OVO (S) Gas Limited is registered in England and Wales (Company No. 02716495) at Floor 5, Crescent, Temple Back, Redcliffe, BS1 6EZ.

    OVO (S) Gas Limited is part of OVO Group Ltd