Why an alarm when no alarms are configured?

I have a 3208 controller, Type J TC input, 4-20mA Output 2, retransmit 4-20mA Output 3, Set 1 parameters are JFXHX, Set 2 parameters are XXXET.
I get a red alarm flashing when power is applied, and am able to acknowledge, but it never goes away. There are no alarms configured in Level 3. What might this alarm be?
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