Repair Loss Of Air Conditioner Cooling Capacity

How to Repair Loss of Air Conditioner Cooling Capacity

If the air conditioning system is not running then:

• Check the Room Thermostat Temperature Setting: Set the thermostat to at least 5 degrees below room temperature.

• Check that the Room Thermostat is set to "Cool" not "Off" or "Heat". If the thermostat is not set to "cool" it is simply turning off your air condition.

• Check that electricity is on for the equipment. Check all switches and controls, including service switches, including outside by the compressor, inside the air handler, and fuses or circuit breakers in the electrical panel.


5 Diagnostic Tips for Air Conditioning System Checks

1. Check the outside Air Conditioning Compressor if the outdoor compressor-fan unit is running. If not, be sure that the outdoor service switch, indoor power switch, fuse, or circuit breakers are all in the "on".
Check the outside compressor condensing coil for damage or blockage.
A blocked condensing coil can cause the compressor to overheat, stop running, or become noisy and work poorly.

2. Check the Indoor Air Handler if the indoor blower unit is running. If not be sure that the electrical power switch at your furnace or air conditioner air-handler is in the "on" position. Make sure that the blower compartment cover of air condition or door is properly closed or an interlock switch may be keeping the system "off".

3. Check the air filter(s) if air conditioning equipment is running but little or no cool air is coming out of the supply register. Check that your air filter(s) have not become blocked with dirt and debris. Usually the air filter is right at the air handler or blower unit, or your air filter may be installed behind a grille covering a central warm-air return that sends air back to the air handler.

4. Check the air supply registers in ceilings, walls, or floors, where cool air is supposed to be delivered to various rooms in the building, be sure that the register is in the "open" and be sure you haven't blocked the supply registers with a carpet or furniture.

5. Check the blower fan assembly if the blower fans itself won't start.

Tips on How to Diagnose Air Conditioner Output Cool Air Flow

• Check if the air Conditioner Blower fan unit is not moving enough air or too little air coming out of your air conditioning ducts.

• Check the condition of the blower unit if it's dirty, then the blower may be spinning but not moving much air.

• Dirty filters or iced coils or crimped or disconnected air ducts can also cause loss of cool in air condition or too little cool air coming out of supply registers.

• Air flow of air condition that is too slow such as a dirty filter or dirty blower fan assembly blades can cause air temperatures that are abnormally low coming out of the air conditioner, and eventually a reduction in air flow as coil ices over.

• Air flow that is too fast such as improper fan motor, speed, fan belt or pulley size, duct design, duct registers removed can produce air that is not cool enough and can prevent proper air dehumidification (oversized air condition system).