ERR4on Masterbuilt Pellet Smoker

Tornado Alley

New member
Just got a ERR4 message. Alarm went off, etc.
Is this something I am doing wrong, or is it a matter for Masterbuilt?
I've been doing BBQ for almost 20 years/ 6 years with Masterbuilt. Would like to smoke Easter Ham, but not sure if it is practical at this point
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