Check your thermostat to make sure it is set in the correct mode and is calling for heating or cooling.
Check your filter. Make sure it is not clogged or dirty. This can cause the equipment to fail, and will affect the efficiency of the system. 1” filters should be replaced once per month. 5” media filters should be replaced once or twice per year.
Check to see if the circuit breaker is in the "On" position. This can save you a service call if the breaker happens to be tripped.
Air Conditioning Equipment Checklist:
Check to make sure that your thermostat is set in the "cool" position.
Make sure that the temperature setting on the thermostat is set lower than the indoor temperature showing on the thermostat.
Ensure that the blower motor in your furnace is running. (If the thermostat is in the "cool" position, the furnace blower should be running.)
Ensure that your outdoor air conditioning (condensing unit) is running:
Check the circuit breakers in the circuit breaker box (or electrical panel), most likely mounted to an outside wall in the back of the house. Are they in the "On" position?
Be sure that you have changed your filter in the furnace. An extremely blocked filter can cause your outdoor air conditioner unit to shut down due to lack of proper airflow.
Not Cooling:
No cooling - central air conditioning (AC) is not blowing cold air. First. if you are still unsure of the problem, check if there is any ice near the top of the furnace. If so, switch the thermostat from cooling to the off position, then switch the fan from Auto to On. This will start the melting of the ice so a service technician can diagnosis the problem. If the outdoor unit is not running or the fan is not spinning, turn the system off. This most likely means that an electrical component has failed. This could be as simple as a capacitor or contractor, or it could be something more involved like a motor or compressor. Either way, it is recommended to shut off your system and call Beam HVAC for your AC repair services.