How To Repair Ac Compressor
How To Repair Ac Compressor – It’s the hottest part of summer and dealing with the AC compressor not turning on is a nightmare. Your house is getting warmer; children become angry; pour a glass of cold lemonade as quickly as possible; and so on. etc., you know how it is. But nothing can stop the sweat. Air conditioning needs to be fixed ASAP!
Compressor problems can be very difficult to solve for someone without the required skills. If the solution is beyond your expertise, you should call an HVAC professional. They can detect compressor malfunctions and quickly restore fresh air operation.
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Read on to find out what happens to your outdoor air conditioner’s compressor. You may find that an AC compressor malfunction is a minor problem that can be solved with a few basic steps.
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You may need to have your system serviced or repaired this summer, if you haven’t already. So if you’re in or around the Baltimore metro area, you’ll get the best service possible when you schedule with SuperTech!
The compressor in your AC system works like your heart, it works like a “pump” that pushes a fluid called refrigerant through the AC. The word “pump” can be misleading, but the compressor moves the refrigerant and compresses it into vapor (big surprise!).
After the refrigerator passes from the outdoor unit to the indoor unit, it absorbs heat from the hot air in the house that enters through the vents. When the cooled air is sent back to the rooms, the refrigerant returns to the outdoor condensing unit. ; the outdoor unit will continue to release unwanted heat (like sweat from your body when you’re hot).
This pressure change takes a lot of work, and if you listen while your air conditioner is running, you can usually hear the sound of the compressor. As a result, the compressor can experience more wear and tear than other AC parts, so mechanical problems with the compressor are a common cause of AC problems.
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AC compressors should last 10-15 years… if the air conditioner is regularly serviced. As mentioned above, the compressor works hard and therefore allows for normal wear and tear, but it should work, especially if the air conditioner is not well maintained. This increases wear and tear and the possibility of compressor failure over time.
It can be hard to tell with 100% certainty if your compressor is broken and won’t start. However, there are a few signs to watch out for. Special equipment and indicators are often required to determine which part of the air conditioner is causing the problem.
But remember: Just because you can’t hear the compressor humming doesn’t mean the problem isn’t elsewhere in the air conditioner.
Any problem that makes it hard for your air conditioner to cool can also make it hard for your compressor. Sometimes it keeps running and starts to heat up. Many air conditioners have two pressure switches, one high and one low, that automatically shut off the compressor to protect the system from further damage.
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The low pressure switch is activated when the pressure drops below 40 psi (pounds per square inch), and the high pressure switch is activated when it exceeds 450 psi. When these switches are activated, they send signals to the compressor to turn off the power. This may seem inconvenient, but it can mean the difference between a minor repair and replacing the entire unit.
When dealing with an AC compressor that won’t turn on, check the air filters first. If your unit’s filters are clogged, your indoor AC unit can’t get the airflow it needs to move the cold through the evaporator coil. As a result, the evaporator coil may freeze and the refrigerant pressure may drop to undesirably low levels. When this happens, the low pressure switch operates to shut down the compressor.
Remember, the longer your old filters sit, the more likely they will attract biological growth and cause your air conditioner to smell.
When it collects on your outdoor condenser coil, it acts as an insulator, making it harder for your home to absorb heat. As a result, the refrigerant pressure becomes so high that the high pressure switch shuts off the supply.
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Remember that refrigerant is a hazardous material and do not attempt to process it yourself. Leave it to the professionals who know how to repair leaks and safely add and remove refrigerant. Also, to learn more about what to do if you have a freon leak in your HVAC system, check out our blog about it!
Many compressor problems are electrical. Specifically, when the condenser fan is running, the unit itself is powered, but the compressor may not be.
If you are a homeowner, PLEASE do not attempt to repair the electrical system yourself. Doing so without the proper knowledge can have very dangerous consequences: you could short-circuit your home, damage its structure, start a fire, or seriously injure yourself.
Electrical repairs are best left to HVAC professionals who have the training and experience to operate them properly.
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Note: Capacitors carry a large electrical charge and must be properly discharged before touching the component.
The capacitor serves as a means of starting and running the compressor, but sometimes fails due to electrical surges or malfunctions in the units themselves. The good news is that replacing capacitors is relatively cheap and simple; but this should also be done by someone with electrical knowledge.
Sometimes your compressor isn’t the problem; the thermostat may not tell your air conditioner to start cooling. Thermostats will not give a cooling signal if they measure the internal temperature incorrectly. It can be misplaced, improperly installed, or simply knocked too hard. Or maybe the thermostat didn’t work at all!
If so, check if the batteries need to be replaced or if the device is installed incorrectly.
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You can learn more about this topic by reading our thermostat troubleshooting blog.
The worst case scenario is that the compressor fails beyond repair. This brings us to the question…
Sometimes the AC compressor won’t turn on, a problem that can lead to costly repairs or be impossible to repair. As a result, you have to decide whether the old air conditioning compressor is worth repairing or better, in the long run, to replace it with a new, more reliable one.
First of all: Windings are coils of motor wires that generate magnetic fields and drive the motor. If one of these wires fails, part or all of the engine will fail (as discussed below).
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Why is motor rotation a problem? Yes, in many cases, the air conditioner compressor motor has a hermetic seal. This makes the compressors stronger and more durable, but the problem is that if the winding is shorted or burned inside the motor, the motor cannot be opened and repaired.
Some motors are not sealed and can be rewound, but this is expensive to do. You need to decide whether it makes financial sense to repair or replace the old car.
For safety reasons, electrical motor problems should only be checked by someone with electrical knowledge. Unplug the unit and discharge the capacitors (if any).
Two things to keep in mind: Most air conditioner compressor motors are equipped with a thermal cut-out that shuts down the motor if it starts to overheat. If this happens, the unit must cool down and reset the circuit breaker before checking for electrical problems (this may take several hours).
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Second, if the engine problem is caused by overheating, be sure to find the cause! Another problem with that AC unit may have started after the motor ran too fast and the current increased.
Winding problems can be caused by increased horsepower, but are more common in older motors and poorly maintained air conditioners. A motor pushed too hard can overheat and damage the cables. In addition, parts can become loose and cause vibrations that can damage the winding/wire.
In open windings, there is a break somewhere in the wires, which prevents the flow of electricity. When this happens, all or part of the machine will stop working.
Sometimes the windings contact the frame or the motor core, usually because the wire is loose. This will cause a chain and cause all or part of the machine to fail.
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Short circuits occur when two wires touch each other, preventing a part of the motor from working properly. In addition, overheating or power surges can burn the cable insulation and cause a short circuit. Over time, motor tremors may also occur
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