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# ESPHome modbus - heatpump Gree Versati III
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# ESPHome modbus - heatpump Gree Versati III
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## Description:
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## Description:
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This manual describes how to connect the device to Home Assistant via Modbus protocol using ESP and RS485/TTL converter.
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This manual describes how to connect the device to Home Assistant via Modbus protocol using ESP and RS485/TTL converter.
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In this case it is about connecting a Gree Versati III 10kw heat pump.
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In this case it is about connecting a Gree Versati III 10kw heat pump.
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## Info:
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## Info:
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- use only shielded cable, otherwise the error "Modbus CRC Check Failed!" may appear in the log.
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- use only shielded cable, otherwise the error "Modbus CRC Check Failed!" may appear in the log.
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- put a 120 ohm resistor after the last connected device
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- put a 120 ohm resistor after the last connected device
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@ -17,13 +15,20 @@ In this case it is about connecting a Gree Versati III 10kw heat pump.
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- for addresses that are read/write use the "number" class (you can then change their values in lovelace)
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- for addresses that are read/write use the "number" class (you can then change their values in lovelace)
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- for each register you want to have in HA you have to create a separate sensor in ESPHome
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- for each register you want to have in HA you have to create a separate sensor in ESPHome
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## Lovelace:
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![lovelace](https://github.com/peca2345/ESPHome-modbus-heatpump-Gree-Versati-III/blob/main/IMG/Lovelace.png?raw=true)
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## Components:
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## Components:
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- ESP8266 / ESP32
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- ESP8266 / ESP32
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- RS485/TTL converter: [SHOP](https://www.laskakit.cz/prevodnik-ttl-na-rs-485--max485/)
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- RS485/TTL converter: [SHOP](https://www.laskakit.cz/prevodnik-ttl-na-rs-485--max485/)
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## Schematic:
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## Schematic:
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![Schema](https://github.com/peca2345/ESPHome-modbus-heatpump-Gree-Versati-III/blob/main/IMG/schematic.png?raw=true)
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![Schema](https://github.com/peca2345/ESPHome-modbus-heatpump-Gree-Versati-III/blob/main/IMG/schematic.png?raw=true)
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## ESPHome code:
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## ESPHome code:
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```
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```
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uart:
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uart:
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filters:
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filters:
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- multiply: 0.1
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- multiply: 0.1
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```
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```
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