On my coach there are two plugs in the compartment for the frig. One plug for the frig the other for the ice maker. The ice maker plug is on the inverter circuit and if I have the inverter on will provide ac to the ice maker even when boondocking.
Brian, Loretta & Daisy (Golden Retriever)
2008 HR Endeavor 40 PDQ , ISL 400
2010 Dodge Ram 1500 Toad