A few questions

[patrickli]

Hi guys,

I have a multi-unit system with 4x indoor units. 3x FTXS20DVMA and 1x FTXS50FVMA. I would like to use this to make them controllable via Home Assistant. I have 2 questions.

• These are pretty old systems (made in 2008 I believe) but they do have S21 ports on the main PCB. Do you think they are compatible?
• Where can I buy those wire harnesses to connect the adapter to the PCB? I do have a bunch of breadboard jumpers and they look like they would fit.

You advice is very much appreciated. Thanks.

[revk]

My understanding is S21 is enough of a standard for Daikin that it should. But not really something I could guarantee. Maybe get one and try.

I don't know where you get the wiring, sorry.

[patrickli]

Alright. Ordered one. Let's see if it works when I get it in a few weeks.

[patrickli]

Well you know what, it works like a charm. I installed this in the FTXS20DVMA which is manufactured in 2008 (15 years old!!). Just used some jumpers and paper tape. No official harness/cable required.

But you are out of stock. Do you know when more will be available?

Some photos

[revk]

New listing https://www.amazon.co.uk/dp/B0C2ZYXNYQ which has the 5 pin connector (JST EH type). I expect your header wires will work though.

[patrickli]

Oh btw, this PCB I bought, Amazon is able to ship it directly to New Zealand. I think it is the old version. Did you do anything to make it able to ship internationally? Might worth checking as it is way more convenient.

[revk]

I did not do anything special to allow it to be shipped internationally, in fact I tried to get an explanation from Amazon as to why they would not, and got nowhere. I have failed to get any explanations from Amazon, sorry. Best option may be a parcel forwarding company.

[JeanOlivier]

I was able to order your old purple PCB twice to Canada very recently simply through Amazon. But you new one does appear as not possible to export. Weird.

[revk]

Anyone that can work out the whims on Amazon is better than I. I'll look again though.