Support for Eurotronic Comet Zigbee Radiator Thermostat

[rigibe]

I have installed a couple of Eurotronic Comet Zigbee Radiator Thermostats.
This model should have replaced the older Eurotronic Spirit Thermostat.
Z2M recognises the new Comet as Spirit and almost everything works except:

1. The min temperature is 8° C
2. The max temperature is 28° C
3. The open window flag is reported at position 5 instead of position 4.

According to the manual the model ID should be COZBXXX, but it is still recognised as SPZB0001 (Older Spirit Model).
Therefore, how can I differenciate it from the older model in the eurotronic.ts file?

Moreover, the converter should be changed as follows:
result.window_open = (msg.data[0x4008] & (1 << 5) || msg.data[0x4008] & (1 << 4)) != 0;
This should work for both models.

[Koenkk]

Could you make a PR to update this?

[rigibe]

Yes, I could change the code and make a PR as soon as I have a moment.

Regarding the min and max temps, as the zigbeeModel is identical to the old valve (as well as other attributes) I would set it dinamically by checking the minHeatSetpointLimit and maxHeatSetpointLimit.

exposes: (device, options) => {
min_occupied_heating_setpoint = (device?.getEndpoint(1).getClusterAttributeValue('hvacThermostat', 'minHeatSetpointLimit'));
// if min is 750 use 8 otherwise use the value for the old model
min_occupied_heating_setpoint = (min_occupied_heating_setpoint === 750) ? 8 : 5;
max_occupied_heating_setpoint = (device?.getEndpoint(1).getClusterAttributeValue('hvacThermostat', 'maxHeatSetpointLimit'));
// if max is 2850 use 28 otherwise use the value for the old model
max_occupied_heating_setpoint = (max_occupied_heating_setpoint === 2850) ? 28 : 30;
return [e.battery(), e.climate().withSetpoint('occupied_heating_setpoint', min_occupied_heating_setpoint, max_occupied_heating_setpoint, 0.5).withLocalTemperature()              
...

What do you think?

[Koenkk]

is the firmware build date/firmware version also the same?

[rigibe]

That's a good question. I don't have the old model to check. According to this post the Spirit has different build dates. But what about SW updates? It is subject to change.

[Koenkk]

Could you provide the data/database.db entry of your device? Maybe the hwVersion differs?

Grabbed this from Koenkk/zigbee2mqtt#4571 (old model)

"appVersion":18,"stackVersion":5,"hwVersion":34,"dateCode":"20190408","swBuildId":"18181120",
"appVersion":22,"stackVersion":5,"hwVersion":35,"dateCode":"20191014","swBuildId":"22190930",
"appVersion":18,"stackVersion":5,"hwVersion":34,"dateCode":"20190408","swBuildId":"18181120"

[rigibe]

This is what I have:

"modelId":"SPZB0001",
"manufacturerName":"Eurotronic",
"powerSource":3,
"zclVersion":8,
"appVersion":1,
"stackVersion":4,
"hwVersion":34,
"dateCode":"20221110",
"swBuildId":"001f0140\u0000\u0004\u0000�\u0002\u0000�\u0000\u0000�\u0003\u0002\u0000s\u0015�\u0000\u0000\u0000\u0000\u0000�\u0006\u0001\u0000��\u001d+6���\u0002\u0000\u0005"}}

[Koenkk]

The dateCode is different, we can differentiate on that.

[rigibe]

Here is the PR.