Monitoring & Controlling Ecodan via CN105

gekkekoe · 2024-06-22T18:25:38.791Z

there’s not a lot known, but it disables the other modes, it’s a sort of “manual” mode.
see Monitoring & Controlling Ecodan via CN105 - #77 by F1p

F1p · 2024-06-22T20:15:34.649Z

Screenshot 2024-05-04 at 22.35.30

The symbol is shown in the FTC6 manual, but no further information is given.
It must be in this mode to allow you to turn the prohibits on and off from the CN105

samumar82 · 2024-06-23T12:30:38.352Z

Thank you @F1p makes sense. So if I understood corretly this does not affect the holiday mode: ex. when I go on holiday and set holiday mode I prohibit both DHW and heating/cooling.
It’s useful to prohibit using wifi instead of updating manually on the FTC6 and that’s it?

samumar82 · 2024-06-27T09:01:21.941Z

Hello me again, sorry.
I’m getting this error and when I turn on the hydronic split the heatpump does not start so no cool air coming out.
Any suggestion on how to solve?
I’ve found this yellow warning:

Screenshot 2024-06-27 alle 10.58.54924×276 58.1 KB

Screenshot 2024-06-27 alle 11.00.47919×200 11.6 KB

Screenshot 2024-06-27 alle 11.00.58917×194 9.4 KB

EDIT: when I remove the connection with the ESP32 everything works as expected.

gekkekoe · 2024-06-27T10:54:39.532Z

@samumar82
there was an issue with translations when setting modes. is fixed by use index to update select controls, should fix errors with translation · gekkekoe/esphome-ecodan-hp@e8fddc7 · GitHub

you should update to the latest version and try again, or switch to english.

samumar82 · 2024-06-27T12:52:32.243Z

Fantastic many thanks, updated and switched into English. Everything’s working fine now!

gekkekoe · 2024-06-27T12:53:36.470Z

@samumar82
you can use italian in latest version, please test if it fixes it for you

samumar82 · 2024-06-27T13:05:16.337Z

Going out now, will test it tomorrow for sure thanks.
Out of topic question: is there the possibility to limit the power consumption of the unit to a maximum value in order not to have huge peaks when heating DHW and to modulate better when heating/cooling and preventing on/off?
The only solution I found is to shortcut some pins on the external unit to limit to 50% power but it’s nothing noticeablty changed.
I have an oversized heatpump

gekkekoe · 2024-06-27T13:20:36.318Z

DHW can be set to ECO mode, in that mode it uses ‘less’ energy. But still compressor still tops at 60hz here on my unit. Please note that when you initiate force dhw, the eco flag is ignored and the compressor will go to 80hz (on my unit).

DHW requires high feed temp, so it will use more power than heating/cooling. That is expected. But it should only run for an hour or so.

there’s a hardware solution to limit power. see Mitsubishi Electric Ecodan Lucht/Water Warmtepompen - Duurzame energie en installaties - GoT (use google translate)

Timbones · 2024-06-29T09:17:55.977Z

gekkekoe:

there’s a hardware solution to limit power.

The FTC6 has this as a software option, explained in that same article.

F1p · 2024-07-22T20:22:02.825Z

Does anyone have the optional Zone flow/return thermistors fitted - THW6 & 7 or THW8 & 9?

Dan_Nichols · 2024-07-22T20:46:52.902Z

@F1p not currently but I’m about to overhaul my system and was considering installing them. It will be a cascaded system (all being well) with a single zone at least initially. Interested to know if having them provides any benefit as I will have a central manifold separating the two Ecodans from the emitter circuits.

F1p · 2024-07-22T20:54:50.622Z

Let me know if you do as i would love some debug output from your CN105

Dan_Nichols · 2024-07-23T06:57:29.997Z

@F1p if you can send me instructions I might be able to grab some debug data whilst I’m working on the Ecodan over the next few days.

F1p · 2024-07-23T07:33:08.502Z

@Dan_Nichols

PM with your Thermistor readings at the same time as a Telnet export world be excellent please.

samumar82 · 2024-08-01T08:41:30.750Z

Hello @gekkekoe I’m using your project which is just fantastic.
My wifi connection is poor where the machine is located and got many disconnection.
Bought a Wemod D1 mini pro with external wifi antenna which should solve the issue by gaining some db.
How can I adapt to ESP8266 your project?
Or do you have any other tips to make it work?
Many thanks

gekkekoe · 2024-08-01T08:52:57.888Z

@samumar82 It was too much work for me to make it work on ESP8266 (will have to redo threads and stuff), so sorry no support for it.
Why not buy a m5stack atom s3 for 8.50 euros, and a cable, just plug and play. Wifi connection for atom s3 is also quite better according to @F1p

you could also try to make a longer cable such that the esp is outside the control unit, or have an accesspoint closer to your heatpump?

samumar82 · 2024-08-01T09:07:09.121Z

I would go this way so, buying an S3. Already made a longer cable, at the moment the esp is 2 metres away from the unit but sitll nothing. Buying a repeater is a bit too much as I just need few more decibels to have a stable signal.
Thanks anyway!

F1p · 2024-08-01T09:08:56.691Z

Agree, swapping @gekkekoe for ESP8266 isn’t worth the effort.
You can get +20dBm increase from M5Stack S3 Atom in testing.

My MQTT based project is easier to compile for ESP8266 or ESP32

samumar82 · 2024-08-01T09:11:38.071Z

gekkekoe:

m5stack atom s3

Thank you, can you just provide an Aliexpress link for the S3 board? Looks like there are many alternatives but not the M5Stack version which I believe I can olny buy through their website but shipping costs to my place are way too much