Troubleshoot arcfault tripping. the breaker is good, the connections on the outlet are good, the circuit is not overloaded. My best guess is that certain fridges do not playing well nice with dual function breakers. I believe there is something going on with the fridge itself that is causing the breaker to trip. RESOLUTION: move the fridge to another circuit and see if it trips the breaker or get an appliance repair person out to look at the fridge. Replaced a non UL listed breaker for an ev charger.