7820A GC Thermal Aux Issue

We have a 7820A GC / 5975 MSD GC/MS system that had been idle for several months.  Upon restarting it, the Aux Thermal 1 (transfer line heater) setting was yellow, and scrolling over, it showed an allowed T range of 0 to 0.  In configuration, Thermal Au 1 was listed as "unknown" while other thermals aux were "not installed."  It kind of looks like the software is not identifying the heater.  Any advice on how to proceed?  Thanks

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