So i tested another esp8266 (D1 mini but from another brand) and same issues. Did you test some 8266 on your end? What was the board? Maybe the D1 mini is too mini for this?
I have a question. I have a Hybrid Daikin Altherma. It is a heatpump unit with a “intergas” central heating gas unit on top of it.
The communication between Heatpump and central heating unit goes thru the X10A connection.
Can i connect the M5stick / esp to it in parallel, or do i interfere with communication?
Its a serial bus, so i expect it to work, but i dont want to burn my unit…
Any other that have this situation as well?
My indoor unit is: EHYHBH08AA
Thanks!
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Does anyone have any experience with the Daikin Altherma H Hybrid Monoblock (EJHA-AV3)? It’s the same one mentioned by @Dutch above but I have it running in standalone.
It does have a 2 pins X10A port which is used to connect to the Intergas boiler but no luck so far with trying to interface with it (I took the ground from another pin and USB power). I do see the ESP in home assistant but I don’t get any sensor data.
I was looking in the wrong place: I was using the X5M 3-4 (which the manual calls X10A) while after a tip from Arnold Niessen and closer examination of the main board I found the regular 5 pin X10A port which works! ESPAltherma is giving me data although I’m missing some key figures necessary to calculate COP like pump speed or generated heat. It does give me a value BE_COP but this is a static 4.5 (at least until now).
Hey,
I’m actually curious about this one (Altherma 3 Geo). I will get mine next year. Were you able to gather more experience with it? Or do you have a special config file?
Hi!
Newbie here! What kind of cables can I use instead of the classic dupont wires? Usually they’re quite short and I would need them to be about a meter long.
Any recommendation?
I would say use some this wire and solder you onw dupunt connector. Or just lengthen the dupont calbe.
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hi @raomin,
I’m using a monobloc heat pump so installing an ESP32 in the external unit is not so convenient for me and so I’m investigating for alternative options.
Inside the house I have only the remote user interface connected to the heat pump via P1/P2 bus.
In
I see that on the PCB of remote control unit there is also a UART debug interface on 5-pins connector X5.
Do you know if that interface is specific to the remote interface or if could be used as the debug UART of the heat pump transporting the payload over P1/P2?
thanks
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hello, first of all, I would like to give you a compliment for your clever creation.
I have already ordered an esp32 and I would like to start programming, but I have a question for you:
I own a Daikin Altherma 3 RF EHVX08S23E9W and I don’t know which item to comment on for this type
uncomment the #include line corresponding to your heat pump. E.g.
thx
Hi fabalci,
Were you able to conect ESPAltherma to the EKHBRD? tnx!
Unfortunately I still couldn’t.
Have you found any solution yet? I’m in the same situation.
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Hello!
I would like to control the heat pump to work if there is a solar production of energy or in some time of the day… is there any chance to do that automatically instead of continue changing the cost of electricity in the main panel?
I do NOT have a water tank in my system!
Thanks
Hello all,
First of all thank you @raomin for your program and explanation. Wonderfull product and hopefully i can get it working soon ™
I have a EHVX08S23E9JW installed 3 days ago. Have located the X10A port. Programmed the ESP32 wich is a WROOM ESP32.
When i connect it to the X10A port the red LED on the ESP turns on but i get no repsonse from the ESP32 on my MQTT broker. When i power it via USB it immediatley shows up in my MQTT broker.
Could this mean that the X10A port can not supply my ESP32?
There is a USB port on the front panel, anybody knows if i can use that to supply the ESP32?? (can it supply 600mA?)
Thanks all, will buy you a beer @raomin when it all works!
Keep up the good work!
Got it working! Needed the GND next to the 3.3V pin instead of the one next to the 5V pin, strange but now it works.
Someone found a solution for monobloc installs.
Hi Raomin,
Just installed a Daikin Altherna EDLA09 LT heatpump. Which line to uncomment in thee #include for this model (Monoblock) ?
Also is there a step boy step manual available to het this IP and running? I am a hardware person and not familiair with the softwarepart. I reed about platformio, but still not 100% clear for me what to do.
Thanks!
Anyone knows the Warm water Heat Pumps are supported as well
EKHHE-PCV3
EKHHE-CV3
PCB Connectors attached, does anyone know they are the same on the supported ones.
ALTHERMA(EBLA-EDLA%20%20EWAA-EWYA%20D%20SERIES%209-16KW).h
Howdy. I had a Daikin EDLA09DA3V3 external monobloc heat pump installed back in July and finally got around to building ESPAltherma for it a day or so ago.
First up: Huuuuuuge thanks to @raomin for this excellent project. It compiled first time using the following in setup.h:
#include "def/ALTHERMA(EBLA-EDLA EWAA-EWYA D SERIES 9-16KW).h"
Was tremendously easy to connect using a set of DuPont connectors, and an ESP32 DevKit 1 in an ABS box, tucked behind some mains wiring at the top right of the control board (no pics because it was cold and raining!).
I’ve created some template sensors from R1T, R2T, R4T, the flow sensor, the INV primary current sensor and a separate voltage sensor elsewhere in the house. Combining these I’ve got my first stab at an instantaneous COP per 30s period, which is great. I may produce myself a dashboard of some sort in the near future so I can see precisely what it’s up to.
Many thanks!
Hi Febalci!
I was able to connect and get information from the x41a port with ESPAltherma.
I was also able to get some info from the 4 pin blue port on the cpu board, but it was not able to be interpreted by ESP.
I think this could be a start to get all the info we need.