2441TH Thermostat

[K-bert]

Good day,

I recently upgraded from a Venstar T1900 with Insteon adapter to a 2441TH because the adapter failed. The 2441TH worked great for about a week and then all of a sudden it stopped communicating. I am using an ISY994irpro to run my house firmware version 5.0.16C if it matters. I contacted Insteon support and was told that the thermostat was likely faulty and to return it to the place of purchase. I received a replacement and installed it today. I linked it to the ISY and then used the software to set the time. I set up some of my preferences using the buttons on the thermostat itself and then manually started my heating program (I am using the ISY to set the heat based on time and occupancy).

I have a program that turns the furnace fan on once every hour for a few minutes then turn the fan back to auto. The fan turned on and turned off within a couple of seconds. Ever since then I have been unable to communicate with the thermostat.

The thermostat is mounted on the wall a few feet from a dual band dimmer for the dining room. There is another dual band dimmer a little further away for the pantry that is linked to a wireless door sensor on the pantry. I have about a dozen dual band devices (including the PLM).

I am at a loss as to what the issue could be. I do not believe that I have received two faulty thermostats in a row. How should I proceed with trouble shooting?

Thanks,
K-Bert

[oper8]

I experience the same issue. Running ISY 5.3.3 The thermostat is responding to my programs, I have one that is changing the heat (or cold) setpoint at different times during the day and one that is turning the fan to "on" or "auto". The problem is with the current temperature reporting through ISY. It doesn't update real time. Must do a query to show the current temperature.