Plugwise introduces its new Thermostat: Emma

Hi, I finally managed, after a lot of trial and error, plugging and unplugging etc. The manual is very limited, it doesn’t say anywhere how open therm connection will show up when set up correctly.

Since then I’ve had plenty of issues, mainly due to Emma ignoring half the messages I send via ZHA. I just tried sending a temp change message and it just doesn’t go through. Sometimes it does, but half of the times it doesn’t…

I purchased an Emma Pro directly from Plugwise on March 30th, it arrived the next day and came with firmware v10.

Before that, I had asked Plugwise if I could update the firmware without an Adam unit, and they responded that they have a service through which I could pay €15 and they’d: send me a return label to ship it back to them, update the firmware, and ship it back to me. @Matl1 this price was for Netherlands, but I think you could ask them about a quote from other countries.

Anyway, I successfully installed mine and configured it via Zigbee2MQTT. I can configure its HVAC mode, lower (heating) and upper (cooling) target temperatures straight from Home Assistant. I haven’t tried publishing messages to MQTT topics, but I won’t be needing that.

This is how it shows up in:

HA Thermostat card:

HA Device Info:

Z2M Device card

Z2M State

{
    "50_1": {
        "pIHeatingDemand": 0
    },
    "humidity": 47.05,
    "linkquality": 112,
    "local_temperature": 21.41,
    "local_temperature_calibration": 0,
    "max_heat_setpoint_limit": 30,
    "min_heat_setpoint_limit": 5,
    "min_setpoint_dead_band": 0.2,
    "occupied_cooling_setpoint": 30,
    "occupied_heating_setpoint": 22,
    "outdoor_temperature": 0,
    "pi_cooling_demand": 0,
    "pi_heating_demand": 12,
    "running_state": "idle",
    "system_mode": "off"
}

Regarding the Emma, today I received some more background info from Plugwise about the v10 firmware update. First, important info is shown here (in Dutch): https://gathering.tweakers.net/forum/list_message/84810798#84810798

Additionally, I received a piece of software code that implements an updated converter function for ZigBee2MQTT. I will try to add this code to the existing plugwise zigbee-herdsman-converter. Once this code has been added to ZigBee2MQTT (and released), then hopefully the Emma will work better in HA (via ZigBee).

I’m not very skilled at writing javascript/typescript code, if anyone can lend a hand please let me know :slight_smile: