You can see that auto is not a supported thermostat mode. If your thermostat actually supports auto, then you can fix that (this is a driver shortcoming).
See this post: Thermostat scheduler unable to set fan or mode - #5 by bravenel
What you need to do is change supportedThermostatModes to this (you don't need to change supportedThermostatFanModes):
["off","heat","cool","emergency heat","auto"]
