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Experience Combi 4E, CRC-Errors #20
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Thanks for the feedback. Also can you please sent the log output of the Mostly the CRC messages are no issue and highlight a timing issue. But the CP plus is repeating messages multiple times. So if Esp does not get everyone is not ideal but no big problem. Cheers Fabian |
The log is recorded wirelessly, via mqtt. To get the serial output will take a couple days, as the esp is in my RV and I am still trying to figure a nice setup for the local (RV) homeassistant setup. I have two pi's alread in it (one for the Victron setup and one with OpenWrt for connectivity). Unfortunately, there's no "one-for-all" solution, yet. Maybe a pi4/8G with alpine-kvm/qemu plus three vm's might work. But I'll try to get the serial output at the weekend, firing up the esp with my laptop connected. Function test still to be done, as well. Good to know about the CRC messages. Will keep you posted. |
Here's the startup scan. I deleted the CRC messages.
I hope it helps. |
First invocation via HA failed somehow. And worked as well. :) After I switched to electric-only via the Truma-display, setting the room temperature worked and my Truma came to life, doing what it was said. Same goes for "off" or "room temp 5°". Now it may take some further time on testing (I would like to be there to see/hear the response of the heater). |
The default yaml includes the web component: |
First of all - thanks for this wonderful ESP implementation to get the Truma "under control".
My setup is a Combi 4E (C4.01.02 / 50.00, H1.01.00 / 340.0A) together with a dedicated esp32. Further sensors are planned.
I got the connection, although the Stop_bits 2 was a bit irritating, all other solutions have 1 stop-bit, as far as I remember.
Currently, the esp is not yet integrated in my HA system, as that is in a different subnet, but planned with a pi4 in the RV.
I do get some CRC errors, see below in my mqtt-messages. But as far as I can tell, all messages received reflect the status of the Truma.
Many thanks again, and if I can get you any further information, please let me know.
Best
Jens
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