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Amy verschueren avatar image
Amy verschueren asked

How to switch water heater element on/off using smartsolar?

Inside the smartsolar is a MPPT with a relais function. I can switch the relais using the relais settings in the mppt using victron connect. It's not clear to me how to connect the relais because the relais contacts from the mppt cannot be connected from the outside. Do I need to open the smartsolar to get acces to the contacts?

MPPT Controllers
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6 Answers
the-doon avatar image
the-doon answered ·

What model are you talking about as my 250/70 has a terminal block at the bottom for the relay contacts.

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Michelle Konzack avatar image Michelle Konzack commented ·
The 150/70, 150/85 and 150/100 too
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Amy verschueren avatar image
Amy verschueren answered ·

Sorry, I was not clear. I'm refering to a smartsolar mppt inside an easysolar-II GX

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Michelle Konzack avatar image Michelle Konzack commented ·
Simply open the housing of the EasySolar and connect a wire to the relay.
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Amy verschueren avatar image
Amy verschueren answered ·

victron-bottom.jpg (89.3 KiB)
victron-mppt.jpg (86.0 KiB)
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gerard-van-seventer avatar image
gerard-van-seventer answered ·

The relay of the 250/70 is not connected to the outside of the easysolar-ii.
See attached closup of my system.

There is however a programmable (aux)relay (see manual) but I'm not sure if this behaves the same as the relay on the charger.

easysolar-250-70.png


easysolar-250-70.png (591.5 KiB)
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teamaker avatar image teamaker commented ·

Also, there is a programmed (aux)relay (see manual); however, I'm not sure if this operates in a manner identical to that of the relay on the charger[.](http://makeatea.com/black-tea-benefits-for-the-stomach/)




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Amy verschueren avatar image
Amy verschueren answered ·

Is there a reason that it is not connected to the outside world?

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Amy verschueren avatar image
Amy verschueren answered ·

whatsapp-image-2023-03-01-at-085031-2.jpegwhatsapp-image-2023-03-01-at-085031.jpegwhatsapp-image-2023-03-01-at-085031-1.jpeg

Opened up the easyolar, connected the relais on the 250/100. The relais controles a Shelly input switch.

The water heater is switched on/off through Shelly wifi/cloud using a Shelly relais when the battery is almost hits absorbsion.

Solved!


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