What steps should be taken if an RV’s fridge stops cooling?

When an RV’s fridge stops cooling, the most logical first steps involve diagnosing the issue rather than replacing the entire unit or performing actions that could lead to further complications. Checking for the power supply is crucial because a lack of electricity can easily cause cooling failures. Ensuring the thermostat is set correctly is also important; if it’s accidentally set too high, the fridge won't cool down properly. Additionally, inspecting for blockages, such as in vents or airflow pathways, is necessary, as obstructions can hinder the refrigeration process.

This approach allows for a systematic troubleshooting method that can reveal simple problems that might be easily fixable. In contrast, immediate replacement of the entire fridge is typically unnecessary and costly without first attempting to identify and resolve the underlying issue. Keeping the fridge off for an extended period could lead to further food spoilage and does not address the root cause of the cooling failure. Turning the fridge temperature to maximum may not be practical, as it does not ensure that the problem is being solved and could lead to overworking the system without addressing any flaws. Thus, option B represents the most effective initial response to the situation.