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sheperdcl- You're a genius! I tried holding both the "ADJ" & "DISP" in when I turned the key, nothing happened. But when I tried the "ADJ" only, it popped into diagnostics mode. The history revealed no problems so I ran it through the "auto" function. When it was done it went back to the regular screen only now it includes the temperature display. A quick change of the fan speed slipped it into the screen that had gone away. It's cured!!! Thank you VERY much. (Where do I send the check?)
I still don't know what happened or why, but I'm not sure that's a big concern anymore. ;o)
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