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absalom-muc / MHI-AC-Ctrl

Reads and writes data (e.g. power, mode, fan status etc.) from/to a Mitsubishi Heavy Industries (MHI) air conditioner (AC) via SPI controlled by MQTT
MIT License
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Info on accessing the main board? #103

Closed jeroen94704 closed 1 year ago

jeroen94704 commented 1 year ago

I made a couple of these modules (and have a bunch of spare unpopulated PCB's if anyone is interested), but for some reason I blindly assumed the installation would be as simple as lifting the front cover of the unit and removing the black cover plate behind it. Unfortunately is seems like it's a bit more involved than that, and while I'm sure I can figure it out it would greatly put my mind at ease if I could see some pictures or a video about the process. Is that available somewhere? I couldn't find anything on YT.

The specific models I have are the SRK35 ZS-W and SRK50 ZS-W.

fonske commented 1 year ago

A YT video (assuming you speak dutch) https://www.youtube.com/watch?v=b_oNoAsSqIE

You only have to do it once if you are using a 5-wire silicone cable JST-XH 5-pin 4S (20 cm) to put it to front of the unit and not directly connect it to the motherboard. See: https://tweakers.net/fotoalbum/image/ismYXEzDBsUAXDobtcaeQGuY.jpg https://tweakers.net/fotoalbum/image/RYFaBsBlIiSJVQtQOlmCcRRK.jpg https://tweakers.net/fotoalbum/image/jx4zreOrfBud9odKrivhV774.jpg

But you need to change the posistion of the connector on the print also.

jeroen94704 commented 1 year ago

Thanks! I did see that video, but as far as I saw they don't show how you get to the actual control board, right? Did you happen to snap any pictures of that?

fonske commented 1 year ago

Once the complete cover is off, you can access the side cover for the motherboard Then the motherboard connections are accessable https://tweakers.net/fotoalbum/image/ZGFXbMmTDn7kyHvT6cSm5AjJ.jpg

jeroen94704 commented 1 year ago

Awesome, thanks!