Not requesting heat: Vaillant HR solide Plus VHR30--34/3-5combi

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Bots
Bots ✭
edited October 2023 in General Questions & Topics
Here some pictures of how it is installed:

https://imgur.com/a/t8KX5K2

I’ve tried installing with settings

D01, D05, D06 & D07
HC1 & HC2

Somehow I keep getting error code S30, and the thermostat doesn’t give heat request to the boiler.

If I put the boiler in diagnose/maintenance mode then it does manually send warm water to the radiator.


Anybody an idea in which settings I need to tinker?

Edit: it used to work for over a year, but I recently replaced the circuit board of the boiler after a defect, ever since getting heat doesn’t work for radiators (hot tap water does work)

Thanks!

Answers

  • johnnyp78
    johnnyp78 ✭✭✭
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    Have you checked that model is compatible with Tado ? I think some vaillants aren’t
  • Bots
    Bots ✭
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    Should work, it worked in the past as well, but it stopped working after replacing the circuit board of the boiler.
  • johnnyp78
    johnnyp78 ✭✭✭
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    That implies to me that there’s a problem with the circuit board.
  • Bots
    Bots ✭
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    Thanks for the prompt replies, but it still worked a couple of months after replacing, looking at my gas bills.

    Somewhere in the summer it stopped working, but recently found out as the weather became colder.

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