https://github.com/DomiStyle/esphome-panasonic-ac

Open source alternative for Panasonic air condition wifi adapters that works locally without the Comfort Cloud
https://github.com/DomiStyle/esphome-panasonic-ac

ac climate cloud comfort comfort-cloud esp esp32 esp8266 esphome heat heat-pump home-assistant home-automation hvac iot mqtt panasonic pump

Last synced: about 2 hours ago
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Open source alternative for Panasonic air condition wifi adapters that works locally without the Comfort Cloud

• Host: GitHub
• URL: https://github.com/DomiStyle/esphome-panasonic-ac
• Owner: DomiStyle
• License: mit
• Created: 2020-06-30T06:52:38.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2024-03-12T11:40:30.000Z (11 months ago)
• Last Synced: 2025-02-06T13:21:24.568Z (about 3 hours ago)
• Topics: ac, climate, cloud, comfort, comfort-cloud, esp, esp32, esp8266, esphome, heat, heat-pump, home-assistant, home-automation, hvac, iot, mqtt, panasonic, pump
• Language: C++
• Homepage:
• Size: 11.2 MB
• Stars: 267
• Watchers: 22
• Forks: 69
• Open Issues: 55
• Metadata Files:
  • Readme: README.CZTACG1.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-esphome-components - panasonic-ac
• awesome-esphome-components - panasonic-ac

README

        
# Hardware installation

This hardware installation guide assumes you already have a Panasonic CZ-TACG1 installed and want to replace it.

* Solder your ESP to your logic converter like this:

| **ESP32** | **Logic Converter**           | **AC connector** | **Notes** |

| --------- | ------------- | ---------------- | ----------- |

| 5V/VIN    | VCC/HV | 5V | Provides the ESP32 with power from the AC, make sure to connect it to the high voltage side if your logic converter has one |

| 3.3V      | VCC/LV | - | Connect the logic converter to 3.3V on the LV side |

| GND       | GND    | GND | Connect any ground from the ESP32 to the ground of the logic converter low voltage side |

| GPIO16    | LV1    | - | Connect GPIO16 to the first of your logic converter channels (Low voltage) |

| GPIO17    | LV2    | - | Connect GPIO17 to the second of your logic converter channels (Low voltage |

| -    | HV1    | RX | Connect the first of your logic converter channels to the AC RX pin (High voltage) |

| -    | HV2    | TX | Connect the second of your logic converter channels to the AX TX pin (High voltage) |

* Disconnect the AC mains supply

* Open up the front of your AC

* Open up the mains supply on the right to gain easier access to the CN-CNT connector

* Your wifi adapter should be located in a plastic slot or outside of your AC

![wifi adapter](images/cztacg1/wifi_module.jpg)

* Remove the old wifi adapter and unplug it

* Solder 4 jumper cables to the CN-CNT wires (https://github.com/Egyras/HeishaMon#where-to-get-connectors)

![wifi adapter](images/cztacg1/connector.jpg)

  * Note: RX/TX is from the direction of the ESP, not the AC.

* Heat shrink the individual wires (**do not skip this step to avoid short ciruits**)

* Connect the jumper cables to your logic converter

* Place the ESP and the logic converter in the slot for the wifi adapter (you can use some velcro to fix it in place)

* Plug in the ESP at the CN-CNT connector

![wifi adapter](images/cztacg1/cncnt.jpg)

Reconnect the AC mains supply. You can now connect this ESP to Home Assistant and control it from there.