sounds like you need to update your Techview. Someone prolly flashed it to a newer version say V39 and your Techview hasn't been updated so you can't talk to it. Also Techview has to be relicensed every 45 days now.
what is your comm loss, chiller to BAS or device on chiller?
It's hard to stop a Trane. but I have made one helluva living keeping them going.
The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage
You bend em" I"ll mend em" !!!!!!!
I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
Best Austin Healey In Show twice in 2013 .....All those hrs paid off .