Hello Google Smart Home Support,
We are encountering an issue with a humidifier device integrated through Smart Home. The device supports the OnOff trait and correctly reports its on/off status through QUERY. Users can turn the device on, and can also adjust fan speed, mode, and toggles without any problem. All these EXECUTE commands reach our backend normally.
However, when the user issues the command “Turn off <device>”, our server does not receive any EXECUTE request containing "on": false. Moreover, Google Assistant responds with “I do not know how to do that”, which is unexpected.
Below are the relevant details. User-related identifiers have been masked for privacy.
1. SYNC payload (abridged)
{
"agentUserId": "MASKED_USER_ID",
"payload": {
"devices": [
{
"id": "MASKED_DEVICE_ID",
"type": "action.devices.types.HUMIDIFIER",
"traits": [
"action.devices.traits.HumiditySetting",
"action.devices.traits.OnOff",
"action.devices.traits.FanSpeed",
"action.devices.traits.Modes",
"action.devices.traits.Toggles"
],
"willReportState": true,
"name": { "name": "Humidifier" },
"roomHint": "living room",
"attributes": {
"availableFanSpeeds": { "ordered": true, "speeds": [ ... ] },
"availableModes": [
{
"name": "Mode",
"ordered": true,
"settings": [ ... ]
}
],
"availableToggles": [ ... ],
"humiditySetpointRange": { "minPercent": 30, "maxPercent": 90 },
"commandOnlyFanSpeed": true
},
"deviceInfo": {
"manufacturer": "smart-home-inc",
"model": "iot",
"swVersion": "1.0.1"
}
}
]
},
"requestId": "14938024066259619326"
}
2. QUERY response (abridged)
{
"agentUserId": "MASKED_USER_ID",
"payload": {
"devices": {
"MASKED_DEVICE_ID": {
"online": true,
"on": false,
"currentFanSpeedSetting": "two",
"currentModeSettings": { "Mode": "Auto" },
"humiditySetpointPercent": 40,
"humidityAmbientPercent": 38,
"currentToggleSettings": { "Ambient_Light": true }
}
}
},
"requestId": "8235970864254045430"
}
The device correctly reports "on": true and "on": false, so QUERY logic appears to work normally.
3. Steps to reproduce
User says: “Turn off <Humidifier>”
Google Assistant responds: “I do not know how to do that”
No EXECUTE request with {"on": false} is delivered to our endpoint
Other EXECUTE commands (On, FanSpeed, Mode, Toggle) are delivered normally
The issue currently occurs only with this specific humidifier model; other devices with OnOff trait do not show the same behavior
4. Assistance requested
We would appreciate help checking the following:
Whether Google successfully generated an EXECUTE(OnOff=false) for the “turn off” command
If it was generated, whether it was routed correctly
If it was not generated, whether NLU or intent parsing may have prevented the OnOff=false command
We can provide full logs, timestamps, or other identifiers if needed
Thank you for your support.
Best regards,
Max Mei
Dreo IoT Team
