Jose Alves

Thanks @KalaNagHTD. I have a few Esp32 and I am going to try. Do you know where are the 5v on this 8pins connector?

Thank you!

Hi @KalaNagHTD, I've compiled the code for board esp32doit-devkit-v1 (as I'm using the ESP32 Wroom) and using both default.h and def/ALTHERMA(LT_MULTI_DHWHP).h, but I'm not able to comunitcate with unit. This...

Hi All, I've already review and tested the wires multiple times and I'm not finding any issue... Also, I'm getting this response, even when I swap the TxD with RxD......

@raomin, I just noticed this on the mqtt side:  Do you know what it means this 0x15 0xea?

In the meantime, I've found a comment on another forum, saying that the 0x15 0xea is the typical answer (from the pump), when the last query was not understood. If...

> Just tried the following combinations, without success: MySerial.begin(9600, SERIAL_8E1, RX_PIN, TX_PIN); MySerial.begin(9600, SERIAL_8O1, RX_PIN, TX_PIN); MySerial.begin(9600, SERIAL_8N1, RX_PIN, TX_PIN);

Thank you both, I'm going to build a new cable, just to eliminate any chances to be the cable. @dncex could you please elaborate a bit more about that issue?

Ok, I've tested it with a new cable (with coaxial ground, just to make sure it wasn't noise), but no changes:  I've also tried the service checker type 4...

Hi Rui, unfortunately, I was not able to find why the x10 port is not working as expected in my heat pump. Maybe this model has a different board/protocol... I'm...