120 disconnected propane refrigerator won’t work

[Wadeo68]

Interesting and confusing scenario. When I disconnect 120 power supply almost nothing works in 2014 Keystone Bullet. Battery is 100%. Propane fridge won’t stay on which is what’s odd. Also, when disconnected I turned the ceiling lights on the module the refrigerator turned on! Could it be a blown breaker? Faulty? All fuses and breaker appear to look fine. Thanks in advance in this mystery.