If the air conditioning unit isn’t cooling, you must call a professional air conditioner repair service. But before that, you can try some easy troubleshooting to fix this problem. Here are a few quick troubleshooting tips when the AC unit isn’t cooling. 5 Easy Troubleshooting Guide: Air Conditioner Isn’t Cooling 1. Check the Power Before jumping into other troubleshooting guides, check whether your AC unit is connected correctly to the power source or not. Besides, check the condition of the AC power chord as well. If the power chords are damaged, replace them ASAP. While replacing the power chords, follow all the safety protocols and unless you’re an expert in handling electrical components, call an electrician. After replacing the power chords, try restarting the AC unit. If it’s still not blowing cold air, there can be a problem with the electrical panel. If you find out that the circuit breaker is tripped due to heavy voltages, replace the circuit breaker and rest