Home Deluxe Whirlpool Splash -> Smart Control

Hi together,
this is my first post in the community forum.
I hope the post is correcty signed.

As the titel sais, I got a low budget whirlpool from Home Deluxe; Model Splash. It only has a power supply to 230V and nothing else. All the functions are controlled by the internaly fitted board.

As soon as the pool has been pluged in, it shows the default temperature of 20 degrees celsius and heating inactive (i guess because of protection if no water is filled in).

I would like to transfere it to be smart controlled by Home Assistant.
I do have a solar system fitted on my house.

The idea is to switch on the power socket by a ShellyPlus1 if there is some produced power left.

Problem: As soon as the whirlpool get powered up, the heating is off and the target temperature is at 20 degrees.

The challenge is, to edit 2 default flags on the internaly fitted board software:

  • „heating on“ when powered up instead of „heating off“
  • target temperature to 38 degrees insted of 20

I‘ll post a detailed picture the next days of the Board.
I do have different on board programer. If there is a supported chip on it, I‘ll also post a dump file of it.

Is there anybody who can support me to get this job done?

Regards Bavarian