I have been having a problem with my Radio Thermostat CT-100 Plus at my daughter's house. For some reason, when it receives a temperature setting command from Hubitat as a result of a Thermostat Scheduler schedule setting, it makes an audible beep even though the musical note on the menu page has a slash through the note. I had my daughter stand by the thermostat when one of these commands was sent and she heard the beep and saw what looks like an error message on the thermostat screen as seen below:
My sense is that there must be a problem with the command it is being sent and it generates a beep as a result of the error (which apparently overrides the slash through the musical note).
I started with the CT-101 driver that came with Hubitat and, upon discovering this error condition, decided to try your driver. Same result! I have a copy of the CT-100 Plus manual, but it doesn't make any mention of error messages. The company seems to have pretty much shut down as I see no indication of any available product other than an old CT-30 on their web page, so no help from them.
Got any suggestions as to what I might do to track this issue down? It is driving my daughter crazy.