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Rank 1
JulesSteele
Rank 1
October 1, 2024
Solved

HELP! HEATING NOT WORKING. Mitsubishi Ecodan air source heat pump

  • October 1, 2024
  • 14 replies
  • 7532 views

So, room temp is 19C, I have put the desired temp at 24c. Flow temp I have turned up to 50 to see if that will kick start the heating. No luck.

Water is on timer and when forced play, the fan works and water is heated.

On the main control panel the heating is showing as restricted and paused, however, when you go into the settings where you can control the heating as on, timer or off, it is showing the play button. 

Any ideas/thoughts so I don’t have to pay Mitsubishi £300 for a call out? I phoned their helpline and after 20 mins of going through everything, they don’t have a clue.

Hoping someone else has experienced the same and has a solution?

Best answer by JulesSteele

Updated on 15/04/25 by Ben_OVO

Hi Daniel, 

 

Yes, it seems the previous owner had two settings going on, one for April-Sept and one for Oct-March. When October came the new setting kicked in which was to have the heating turned off from 4pm. Because it was the main setting anything I did manually couldn't over ride it. I switched to factory settings and reprogrammed everything and problem solved! 

This video explains more about Ecodan heating modes:

 

 

14 replies

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Newcomer
Daniel Panayotov
Newcomer
November 3, 2024

Hello.  I have the same problem.  Do you know what the problem is now?

J
Rank 1
JulesSteeleAuthorSolved
Rank 1
November 3, 2024

Updated on 15/04/25 by Ben_OVO

Hi Daniel, 

 

Yes, it seems the previous owner had two settings going on, one for April-Sept and one for Oct-March. When October came the new setting kicked in which was to have the heating turned off from 4pm. Because it was the main setting anything I did manually couldn't over ride it. I switched to factory settings and reprogrammed everything and problem solved! 

This video explains more about Ecodan heating modes:

 

 

    D
    Newcomer
    Daniel Panayotov
    Newcomer
    November 3, 2024

    Thank you! I will try to reset everything in the heat pump.

    Peter E
    Super User
    Peter ESuper User
    Super User
    November 3, 2024

    @JulesSteele Thank you for coming back on and helping @Daniel Panayotov

     

    I started out as a forum volunteer in exactly that way. Getting help on here and then coming back to help someone else with the knowledge you gained. I think you are now the Ecodan expert :) Well done!

     

    Peter

     

    PS Moderators: Can you change the Best Answer to @JulesSteele 

    Reducing my yearly fossil fuel usage with an EV (-900 litres petrol), A2AHP (-8,700 kWh gas) and Timed Immersion heater (-1,500 kWh gas)
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