Lay z spa St. Moritz #54175

[sandy1981Nett]

First of all, thank you for the great project! Can I also use this with the pump model # 54175?

Lay-Z-Spa St.Moritz

I opened the pump and there are 6 cables.

[visualapproach]

Hi! You're welcome! I haven't heard of any 6-pin model that doesn't work so far. New models may require three extra resistors. Every model is not tested ofc, there is very many, but they seem to follow the same architecture. Worst case I guess, is we need to make a new button map but probably one of the existing three maps work.

[sandy1981Nett]

now ... show the display Hello and than the ip ...

but then all buttons and the lcd display flash up and down ...

what is wrong?

[sandy1981Nett]

[sandy1981Nett]

I can Find the error

[sandy1981Nett]

i find the error it is the Board

one solder joint was not okay...

thx i'am happy... now i config mqtt ... i hope it is fine ...

[visualapproach]

That is good

[sandy1981Nett]

Uploading VID_20210719_193735.mp4…

[chrstnmr]

Hey, which model is your pump? See sticker on the side of the pump

[sandy1981Nett]

Lay z spa St. Moritz #54175

[chrstnmr]

At the pump there is a specific model number for the pump since the pumps are similar between the different SPAs. For me it is interesting whether the pump is the same, since I have similar problems.

[sandy1981Nett]

look at picture, in my case it was a defective solder joint

[chrstnmr]

Ah, thanks. Sorry, I was assuming the St. Moritz was a 2021 model with the 2021 pump (since the name is similar to mine St. Lucia :D).
Good to hear, that it works for you :).

I am having problems with mine, as no information from the pump is received or can be transferred (buttons or temperature). Not sure where the problem is. Maybe I'm going to resolder it from scratch to rule out any errors on solding (which I excluded in the beginning since I do not see any faulty soldings on the PCB).