Thermostat scheduler unable to set fan or mode

🧰 Built-In Apps and Drivers Built-in Apps
18

@mark.cockcroft can advise if needed, but the change should be something like this.

That is, you should replace these lines in def configure():

sendEvent(name: "supportedThermostatFanModes", value: ["off"])
...    
    sendEvent(name: "supportedThermostatModes", value: ["off", "heat"] )

with these:

sendEvent(name: "supportedThermostatFanModes", value: groovy.json.JsonOutput.toJson(["off"]))
sendEvent(name: "supportedThermostatModes", value: groovy.json.JsonOutput.toJson(["off", "heat"]))

Then, click Configure on the device page.