HVAC (function 21)

An air-conditioning unit. It reports the temperature it measures, the setpoint it is working towards, the fan speed and whether it is heating, cooling, dehumidifying or just circulating air. The command sets the running mode or the setpoint.

• fanSpeed enum: auto, min, med, max, eco.
• currentMode enum: heating, cooling, deshum, auto, fan.
• runningMode enum: OFF, ON.

Published

device/21/<i>/life

metadata adds counter; expireAfterSec: 30.

data field	Type	Unit	Description
BindToParc	int	—	Parc binding id
realTemp	int	°C	Measured temperature
tempSetPoint	int	°C	Setpoint
fanSpeedCode / fanSpeed	int / string	—	Fan speed (enum)
currentModeCode / currentMode	int / string	—	Mode (enum)
runningModeCode / runningMode	int / string	—	Running state (enum)

{
  "data": {
    "BindToParc": 2,
    "realTemp": 21,
    "tempSetPoint": 22,
    "fanSpeedCode": 2,
    "fanSpeed": "med",
    "currentModeCode": 1,
    "currentMode": "cooling",
    "runningModeCode": 1,
    "runningMode": "ON"
  },
  "metadata": {
    "rxdate": "2026-06-17T14:30:45.123Z",
    "rxTimestamp": 1781793045,
    "expireAfterSec": 30,
    "counter": 5
  }
}

mosquitto_sub -h 127.0.0.1 -t 'device/21/+/life' -v

Command — device/21/<i>/command

Regex ^device/21/([[:digit:]]+)/command$. Two-field command:

Field	Type	Description
command	int	0 = mode control, 1 = temperature setpoint
parameter	int	command 0: 0=off, 1=on, 2=auto · command 1: temperature in °C

mosquitto_pub -h 127.0.0.1 -t 'device/21/0/command' -m '{"command":0,"parameter":1}'   # on
mosquitto_pub -h 127.0.0.1 -t 'device/21/0/command' -m '{"command":0,"parameter":2}'   # auto
mosquitto_pub -h 127.0.0.1 -t 'device/21/0/command' -m '{"command":1,"parameter":18}'  # 18°C