Z-wave thermostat setpoint

[kerrylarson]

I am trying to set a Z-wave thermostat to a low heat setpoint (i.e. 40F to prevent a room from freezing). HASS, apparently from the Hubitat integration, prevents setting a value below 45. I have to go back to Hubitat set set a target temperature below 45. This is not a limitation in the thermostat itself (Radio Thermostat CT101). Is there a simple way to resolve this?

I tried to customize an Actions YAML, but since I don't know what I'm doing, I got a syntax error:
action:

• service: sensor.shop_thermostat_thermostat_setpoint
  target:
  entity_id: climate.shop_thermostat
  data:
  target_temp_high: 75
  target_temp_low: 35
  hvac_mode: heat_cool

To Reproduce

Go to thermostat device. Set a heat setpoint above 45F. Try to set a new heat setpoint of 40F - no go.

Environment
Core 2024.11.3
Supervisor 2024.11.4
Operating System 13.2
Frontend 20241106.2

[jason0x43]

Currently the integration is using HA's default min and max temperatures, but it looks like we could provide different ones. I should be able to just lower the min temperature for the integration down to 40°F.

[kerrylarson]

"Currently the integration is using HA's default min and max temperatures" Oh, I read an old thread on the topic that pointed to a Z-wave device issue, so I mistakenly assumed that was it. I just tried with a WIFI thermostat and see that you're completely right, it's also limited to 45F, so coming from HA. Can that be adjusted in the configuration.yaml?

[jason0x43]

I just tried customizing an entity through configuration.yaml, and while it changes the range for the UI control, HA won't accept numbers outside the 7/35°C range. Updating the min temperature in the integration's climate entity works, though. I'll try to post an update with that later today.

[jason0x43]

v0.9.38 has been updated to support a minimum thermostat temperature of 40°F. Give that a try.

[kerrylarson]

It works! Thanks so much Jason for helping me out. At least for this thermostat, it appears that the lower limit is 35°F.

[jason0x43]

If you have a chance, could you post the capabilites for your thermostat device? I'm wondering if the device indicates its min and max temperatures.

[kerrylarson]

[
    {
        "capabilities": [
            "RelativeHumidityMeasurement",
            {
                "attributes": [
                    {
                        "name": "humidity",
                        "currentValue": "41",
                        "dataType": "NUMBER",
                        "values": null
                    }
                ]
            },
            "ThermostatFanMode",
            {
                "attributes": [
                    {
                        "name": "thermostatFanMode",
                        "currentValue": "fanAuto",
                        "dataType": "ENUM",
                        "values": [
                            "on",
                            "circulate",
                            "auto"
                        ]
                    }
                ]
            },
            "PowerSource",
            {
                "attributes": [
                    {
                        "name": "powerSource",
                        "currentValue": "mains",
                        "dataType": "ENUM",
                        "values": [
                            "battery",
                            "dc",
                            "mains",
                            "unknown"
                        ]
                    }
                ]
            },
            "Refresh",
            "Battery",
            {
                "attributes": [
                    {
                        "name": "battery",
                        "currentValue": "100",
                        "dataType": "NUMBER",
                        "values": null
                    }
                ]
            },
            "ThermostatHeatingSetpoint",
            {
                "attributes": [
                    {
                        "name": "heatingSetpoint",
                        "currentValue": "40",
                        "dataType": "NUMBER",
                        "values": null
                    }
                ]
            },
            "ThermostatCoolingSetpoint",
            {
                "attributes": [
                    {
                        "name": "coolingSetpoint",
                        "currentValue": "78",
                        "dataType": "NUMBER",
                        "values": null
                    }
                ]
            },
            "ThermostatSetpoint",
            {
                "attributes": [
                    {
                        "name": "thermostatSetpoint",
                        "currentValue": "40",
                        "dataType": "NUMBER",
                        "values": null
                    }
                ]
            },
            "ThermostatOperatingState",
            {
                "attributes": [
                    {
                        "name": "thermostatOperatingState",
                        "currentValue": "idle",
                        "dataType": "ENUM",
                        "values": [
                            "heating",
                            "pending cool",
                            "pending heat",
                            "vent economizer",
                            "idle",
                            "cooling",
                            "fan only"
                        ]
                    }
                ]
            },
            "HealthCheck",
            {
                "attributes": [
                    {
                        "name": "checkInterval",
                        "currentValue": null,
                        "dataType": "NUMBER",
                        "values": null
                    }
                ]
            },
            "Configuration",
            "Actuator",
            "Polling",
            "ThermostatMode",
            {
                "attributes": [
                    {
                        "name": "thermostatMode",
                        "currentValue": "heat",
                        "dataType": "ENUM",
                        "values": [
                            "auto",
                            "off",
                            "heat",
                            "emergency heat",
                            "cool"
                        ]
                    }
                ]
            },
            "TemperatureMeasurement",
            {
                "attributes": [
                    {
                        "name": "temperature",
                        "currentValue": "44.5",
                        "dataType": "NUMBER",
                        "values": null
                    }
                ]
            },
            "Thermostat",
            {
                "attributes": [
                    {
                        "name": "temperature",
                        "currentValue": "44.5",
                        "dataType": "NUMBER",
                        "values": null
                    },
                    {
                        "name": "heatingSetpoint",
                        "currentValue": "40",
                        "dataType": "NUMBER",
                        "values": null
                    },
                    {
                        "name": "coolingSetpoint",
                        "currentValue": "78",
                        "dataType": "NUMBER",
                        "values": null
                    },
                    {
                        "name": "thermostatSetpoint",
                        "currentValue": "40",
                        "dataType": "NUMBER",
                        "values": null
                    },
                    {
                        "name": "thermostatMode",
                        "currentValue": "heat",
                        "dataType": "ENUM",
                        "values": [
                            "auto",
                            "off",
                            "heat",
                            "emergency heat",
                            "cool"
                        ]
                    },
                    {
                        "name": "thermostatFanMode",
                        "currentValue": "fanAuto",
                        "dataType": "ENUM",
                        "values": [
                            "on",
                            "circulate",
                            "auto"
                        ]
                    },
                    {
                        "name": "thermostatOperatingState",
                        "currentValue": "idle",
                        "dataType": "ENUM",
                        "values": [
                            "heating",
                            "pending cool",
                            "pending heat",
                            "vent economizer",
                            "idle",
                            "cooling",
                            "fan only"
                        ]
                    },
                    {
                        "name": "supportedThermostatModes",
                        "currentValue": "[\"heat\",\"cool\",\"off\",\"auto\"]",
                        "dataType": "JSON_OBJECT",
                        "values": null
                    },
                    {
                        "name": "supportedThermostatFanModes",
                        "currentValue": "[\"auto\",\"on\"]",
                        "dataType": "JSON_OBJECT",
                        "values": null
                    }
                ]
            },
            "Sensor"
        ]
    }
]

[kerrylarson]

Sorry, I didn't get it formatted correctly.

[jason0x43]

No problem, it just needed more back ticks 🙂