A method for managing power of a climate control unit (CCU) that is configured to be used with at least one of an electric vehicle, a trailer, or a transport container and at least partially powered by the electric vehicle, the method comprising:
- monitoring, by a power controller, a plurality of fault detecting and isolating circuits that are connected in series for an electrical fault of one of a plurality of accessory electrical components that are electrically connected to the plurality of fault detecting and isolating circuits;
- isolating, by the power controller, the electrical fault at one of the plurality of accessory electrical components as identified in the monitoring of the plurality of fault detecting and isolating circuits;
- and
- monitoring, by the power controller, each of the fault detecting and isolating circuits for an indication the electrical fault at the one of the plurality of accessory electrical components is no longer present.