2 Main Problems that Affect AC & Refrigeration Systems

10 November 2014

Eugene Vargas

An air conditioner system is made up two main parts. The first is a control system that comprises of the control panel, electrical wiring, temperature controls and sensors. The second, the A/C refrigerant system, comprises of the A/C compressor, condenser, evaporator, refrigerant as well as the A/C hoses. The following information will look at the two main problems that affect air conditioner and refrigeration systems and how to troubleshoot such problems.

1. The air conditioner fails to blow cold air.

During hot temperatures, this is often the most common protest by homeowners about their air conditioners. If the airflow emanating from the vents is fine, but the air is warm, the probable cause could be a leak inside the refrigerant system.

One method you can ascertain this is by eavesdropping on the A/C compressor. You will hear a perceptible sound from the engine space when the A/C is switched on. This is typically the air conditioning compressor clutch engaging, that permits the compressor to function.

For a system that has a low refrigerant, the behaviour of the compressor will be such that it cycles on and off repeatedly. If the system is extremely low, then the compressor might fail to switch on completely.  A low refrigerant system indicates the presence of leaks. But how do you determine a leaky A/C system?

• Pay attention to a hissing sound from the air conditioner
• Inspect around the A/C hose as well as pipe fittings for the presence of any oil residue
• Check the condenser for possible road damage
• Using an infrared light, try to identify the presence of ultraviolet dye within the refrigerant

2. The air conditioner system is very loud.

It is normal for your air conditioning system to produce some sounds when operating as a result of the moving components and motors. However, if you discern that it has begun to operate at an increased volume than usual, it is likely that the problem emanates from any of the many motors that make up the air conditioning system.

• Compressor motor: a faulty compressor motor produces rattling and loud sounds. The problem may also be compounded further by a drop in the level of cooling that your air conditioner might be able to offer. You may also discern that the piercing noise only occurs when the AC is turned on or shut down.
• Fan motor: A defective fan motor can be the source of different noises including grinding which often point towards to a possible problem with the bearings and the need for lubrication.

If your air condition could use some repairs, talk to contractors such as Impact Air to get it working properly.

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