The ice maker is on a separate circuit than the fridge, as you may know. On that same circuit are the front TV, audio video equipment over the dash, dinette receptacles, and the sconce lamp. The circuit is #6 on the Inverter panel, next to the 240v. Main panel, and the breaker's tag mentions dinette and A/V, but not the icemaker. The Square-D breakers on that Inverter (120v) panel have built-in GFCI's, which are especially sensitive, and may trip easily if a circuit is exposed to moisture or even high humidity and temps.
If your TV doesn't work, it's that breaker, or a bad connection in the junction box "under" the fridge according to the wiring diagram. If the TV, A/V, dinette outlets, and sconce do work, then it's the ice maker outlet behind the fridge that's bad.
I had trouble last year with that circuit in high Nebraska heat, along with ignition issues and a TV that would turn on by itself. It's possible there is an ignition interlock along that circuit that shuts down the TV if the ignition is turned on, and I think mine is in the ice maker outlet box. The heat played havoc with that circuit, which kept blowing the breaker. Everything was fine when we dropped below 100 degrees and less humidity.
Joel
