When customers call Tech-on-Deck Heating, Air, & Electric for help with their Raleigh, NC, cooling systems, one of the most common things they report is, “My AC compressor won’t turn on.”
The AC compressor is the primary component in the outdoor unit. It compresses the refrigerant into gas, then pumps it through the system to cool the air. It can stop working for a variety of reasons, but our team has experience with compressor troubleshooting to get it working again. Read on for more inside from the top-rated source of expert AC repair services in Raleigh.
The Most Common Reasons for Compressor Failure in Raleigh, NC
When you tell us, “My AC compressor won’t turn on,” it’s most likely due to one of the following issues.
Electrical Issues
The first thing to check when the AC compressor isn’t working is the electrical panel to be sure that the breaker switch didn’t trip. A tripped switch will prevent the AC from coming on; if this is the issue, simply flip the switch back to the on position. However, if the breaker switch trips frequently, there’s a bigger issue that requires professional attention.
Loose electrical connections in the air conditioning unit can also cause the compressor to stop working. Over time, vibrations in the unit can loosen connections, leading to a compressor malfunction.
A Dirty System
When dirt and grime accumulate on the evaporator coils in your Raleigh air conditioner, the unit won’t run efficiently and, eventually, may not work at all. Build-up allows contaminants into the system to affect the mechanical components and the refrigerant temperature and eventually lead to a breakdown.
The best way to avoid this issue is to schedule annual air conditioner and compressor maintenance. A professional technician will clean and inspect all the major parts to ensure they’re in prime condition and unlikely to fail.
Overheating
An overheating compressor can cause several problems in your air conditioning system, including ice buildup on the coils, and eventually the unit may stop working altogether. Faulty wiring or a motor issue can lead to overheating, but a dirty system or clogged air filter can also create problems, which highlights the importance of scheduling compressor maintenance with an HVAC company in Raleigh.
Refrigerant Problems
Air conditioners require a precise amount of refrigerant to work properly. A leak can result in low refrigerant, which will lead to compressor problems, but too much refrigerant can also leave you saying, “My AC compressor won’t turn on.”
Part Malfunctions
When certain components inside the compressor malfunction or fail, the compressor may not turn on. For example, if the outdoor unit doesn’t come on, but you can hear the fan running, it’s most likely an issue with the valves inside the compressor. If a valve fails, the compressor can’t convert the liquid refrigerant into gas, so the air conditioner will blow warm air.
Other mechanical components that can fail on your Raleigh air conditioner include:
- The capacitor, the part that delivers power to the motor to start the compressor
- The start relay, a switch that provides extra electricity to the compressor motor
- The terminal connections that connect the unit to the power source
In many cases, replacing worn parts or cleaning and tightening the connections can resolve the problem. Regular AC maintenance can also help prevent these issues by keeping the system clean, checking electrical components, and catching small problems before they lead to major repairs.
Is a Total Compressor Failure Possible?
Sometimes, the compressor has an irreparable issue, and a replacement is the only solution. Because of the cost and complexity of a compressor replacement, in some cases, replacing the entire air conditioner is a better solution. A good rule of thumb is that if the cost to replace the compressor is more than 50% of the cost to replace the entire unit, getting a new air conditioner is the better choice.
Spotting Signs of a Compressor Problem
Paying close attention to your air conditioner can help you identify the signs of trouble before the compressor fails. It’s a good idea to call for repairs if you notice:
- The circuit breaker tripping frequently
- The outdoor unit shakes when it starts up
- Unusual noises when the air conditioner is on
- Reduced or uneven cooling
- Short cycling (the air conditioner turning on and off without cooling your home)
Keep Your Compressor Working With Expert Help in Raleigh, NC
A malfunctioning AC compressor can quickly make your home hot and humid. If your AC compressor will not turn on, contact the certified HVAC technicians at Tech-On-Deck Heating, Air, & Electric at 984-464-4487. Homeowners in Raleigh, NC rely on us for dependable air conditioning services and prompt service, no matter how complex the issue.