esphome-panasonic-ac
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DomiStyle
where to buy cable that fits pannasonic pump?
Do not want to cut the origional cable. Is it not possible to buy this on aliexpress or something?
[erased....]
As I am getting to manny request the cables are no longer available. I will send one to torsteinelv
Alternatively, you can buy connectors & pins and make your own cable. You can find connector & pin types as well as instructions by googling. Note that you don't need converters, you can connect the other end of ac cable directly to ESP, it tolerates 5V levels
Did anyone find premade cables? Or know what the connector is named
Not sure. Was someone one this site contacted me and sendt me a cable 😁
Not able to power the Esp from the pump. Is this correct?
@torsteinelv have you checked this? https://github.com/DomiStyle/esphome-panasonic-ac/blob/master/README.CZTACG1.md
As I mentioned earlier, you do not need the converter. ESP2866 and 32 are 5V tolerant. Check e.g. this: https://ba0sh1.com/2016/08/03/is-esp8266-io-really-5v-tolerant/
Everyone of course makes his connections and wirings on his own responsibility, but for example, I have been running my pumps with ESPs without converters for at least half an year if not more and without problems.
On the contrary, I have had problems in some cases when using a converter, they do not always pass through data as expected
BTW, I'm using this: NodeMCU esp32 wroom Dev Kit. It handles 5V to 3.3V Logic conversion inbuilt
Did anyone find premade cables? Or know what the connector is named
Well, you did not very much specify to what device you are going to connect to, but e.g. "normal" Panasonic heat pumps should go this...
https://github.com/Egyras/HeishaMon#where-to-get-connectors https://uk.rs-online.com/web/p/wire-housings-plugs/4766798
I just got my CS-TE25TKEW units hooked up using the CN-CNT port using the NodeMCU ESP32 Wroom Dev Kit from AZ-Delivery, no level shifter needed.
I made my own cables up using JST-PA connectors - they are much taller than the other more common JST type connectors used on PCBs so make sure you get the right type.
I ended up getting a box of various pin counts of JST-PA connectors+sockets+crimps off of Amazon via CQRobot reseller, link - https://www.amazon.co.uk/dp/B0851CB2TR
You will struggle to find the correct crimpers for JST-PA crimps at sane prices (the JST official crimpers are upwards of £400, even on ebay!), however PA-09 manual crimpers are enough to get the job done with, they are around the £40/US$40 price mark and useful for other crimped micro-connectors too, can find them on amazon, adafruit, thepihut, etc.
Do both the CN-CNT and CN-WLAN port use the same JST-PA 5 pin connectors? And on what port is the default wifi module connected on the latest Panasonic AC, so that you can use the cloud application and esphome interface simultaneously?
I've been trying to order a precrimped JST-PA 5 pin connector, but no luck so far. Guess I'll have to use the crimps and connectors from RS-Online! Or maybe the box @Uro1 mentioned is a nice idea, I just have the borrow some crimpers from my work then!
Do both the CN-CNT and CN-WLAN port use the same JST-PA 5 pin connectors?
The CN-CNT port uses a 5-pin single row 2.0mm pitch JST-PA connector, I don't know which connector the CN-WLAN port uses as my units do not have those, maybe someone else would be able to answer that.
And on what port is the default wifi module connected on the latest Panasonic AC, so that you can use the cloud application and esphome interface simultaneously?
As for knowing what Panasonic put into the latest AC units, you will have to find out the exact model number of the unit and either get photos of its PCB connectors and/or find the model's service manual which contains the board diagrams as without those to confirm which connections the AC unit's board does support we would just be speculating/guessing on what it is capable of.
I've been trying to order a precrimped JST-PA 5 pin connector, but no luck so far.
I couldn't find any pre-made cables either, I just ordered that connector kit and crimped them myself, it is a little fiddly to crimp such small crimps but not impossible.
You can sometimes find pre-crimped wire tails available that you can fit to the JST connectors to avoid having to crimp them yourself, but your mileage may vary, I found in the past when ordering tails for micro connectors like these it is a mixed bag whether or not they are the correct type of crimps that will seat and latch into the connector correctly.
Thanks @Uro1 ! I will be getting 2 Panasonic Erethea units installed next week, so I guess I'll just open them up when they're installed and figure out which ports are available. Maybe I will post some pictures here to figure stuff out. Thanks!
Hi @Uro1 , I opened up the installed AC, only connector I could find was this one:
But there's no indication if this is a CN-CNT port or anything different.. Or can the ports also be hidden behind the second cover which is attached with screws to the unit?
The white port looks to be the 5-pin CN-CNT port, it is in the same position on my unit, however you should have got the service manuals with the units so you will be able to check in those also.
The connector receptacle looks to be slightly different from the JST-PA type used in my unit, they could have changed those to a more readily available component, so you may well find that a JST-PA connector will not fit in those at all, the JST-PA socket has a flat top, the connector receptacle in your unit is stepped and the latch clip spacing is much narrower.
If you don't have the service manuals then the only way you will know all of the ports that the board has is to take the covers off unfortunately (turn the units off at the mains supply before doing so).
Chances are with it being a more modern unit is that it will have both ports, only way to find out is to investigate further I'm afraid.
As I mentioned earlier, you do not need the converter. ESP2866 and 32 are 5V tolerant. Check e.g. this: https://ba0sh1.com/2016/08/03/is-esp8266-io-really-5v-tolerant/
Everyone of course makes his connections and wirings on his own responsibility, but for example, I have been running my pumps with ESPs without converters for at least half an year if not more and without problems.
On the contrary, I have had problems in some cases when using a converter, they do not always pass through data as expected
BTW, I'm using this: NodeMCU esp32 wroom Dev Kit. It handles 5V to 3.3V Logic conversion inbuilt
@MEKadan Are you sure? I am using (nearly?) the same board. NodeMCU esp32 Dev Kit C.
Yesterday I have connected the ESP successfully to the AC, as this are my first steps with ESP.
Unfortunately the board is losing its wifi connection every time I do upload my new / edited yaml config. It comes to the point where it says "successfully uploaded" in the console but when it comes to show the actual LOG the board is going offline. The red power LED of the ESP is still on so I guess the board didn't crash. Just the wifi.
Only thing Tha helps is to power off / on the AC so that the wifi pops on again.
Another thing is that the board is getting super hot. At least I can't touch it for too long. This can't be normal, isn't it?!
And last but not least Home Assistant is showing me the correct states like "current power", "temperature", "swing mode" etc. but I can't control the AC anyway. Everytime I try to change e.g. to "heat mode" it switches back to "off" after 2 seconds. Same for the swing mode etc.
What Pins on the ESP do you use? I am using the GPIO16 for TX and GPIO17 for RX. And of course V5 Pin for 5V and any GND for Ground. Maybe I should try using directly the "TXD" and "RXD" Pins?
Anyway, the RX / TX pins should affect the wifi and heating problems, do they?!
Hope you can help me out even if your last post is 4 months ago :)
@hAMMERlized
This is my board
Those wires go directly to Panasonic connector, no converters installed. Board is not hot, hardly even warm. What comes to network problems, ESP's are known to need some tuning with the routers on the router side, they tend to drop out for few secs every now and then. However the problem you described does not sound familiar?
What comes to pins, I think your Rx and Tx are crossed !?!
Here's my config (I took a screenshot, code editor <> seems to some funny things here...:
...and yes, it's been somewhat 4 months from the previous, and the both ESP's connected to my 2 Panasonics have been running without any problems also during that period whatsoever. I recall I installed them last summer or so.
@Uro1
You will struggle to find the correct crimpers for JST-PA crimps at sane prices (the JST official crimpers are upwards of £400, even on ebay!), however PA-09 manual crimpers are enough to get the job done with, they are around the £40/US$40 price mark and useful for other crimped micro-connectors too, can find them on amazon, adafruit, thepihut, etc.
I did the crimping myself using just tips of sharp wire cutters. You just insert the wire inside the little metal tube and squeeze the metals around the wire. No big deal.
@Uro1
You will struggle to find the correct crimpers for JST-PA crimps at sane prices (the JST official crimpers are upwards of £400, even on ebay!), however PA-09 manual crimpers are enough to get the job done with, they are around the £40/US$40 price mark and useful for other crimped micro-connectors too, can find them on amazon, adafruit, thepihut, etc.
I did the crimping myself using just tips of sharp wire cutters. You just insert the wire inside the little metal tube and squeeze the metals around the wire. No big deal.
Yea its not rocket science 😅, I used ratcheting crimps I already had, although those were fiddly as I don't have the correct dies for these connectors and not as straightforward had I had the correct dies for my crimpers - or just went the manual route as you did.
Those PA-09 manual crimpers I mentioned are useful outside of this specific use-case for other common pin-types, I figured I would offer those up for anyone looking for a JST-PA pin-compatible set of crimpers at reasonable cost.
CN-CNT
@Wimll I believe this is a CN-DISP port for the external display/remote, not sure what protocol though, I am looking to do the same as you so would be good to work out. Comfort Cloud drops out every now and again from the WiFi which f's up my Home Assistant... additionally its cloud based so I'd rather have something all local.
I just opened my unit up and it says CN-CNT on it actually, so you may need to do the same, the manual which came with my unit says its a CN-DISP, but definitely not.
For anyone still looking for the right cable, I've recently ordered this (after trying making my own :-)): https://nl.aliexpress.com/item/1005002904897793.html?spm=a2g0o.cart.0.0.14ad61d7kdjZrI&mp=1&gatewayAdapt=glo2nld select the 5P version , and it has dupont connectors as well.
Hi @Uro1 , I opened up the installed AC, only connector I could find was this one:
But there's no indication if this is a CN-CNT port or anything different.. Or can the ports also be hidden behind the second cover which is attached with screws to the unit?
This is a CN-CNT port.
