What is an HVAC Compressor?

HVAC compressor is an integral part of the air conditioning system. Its role is to carry heat out of the house while compressing the refrigerant fluid. The warmed refrigerant is heated up further, which converts it from its gaseous state into liquid. The refrigerant’s temperature should always be higher than its surrounding environment. Heat still transfers from warm to cool areas. For the heat to be transferred out efficiently, the compressor needs to be appropriately maintained and in working condition. In most cases, if the AC is not working, the root of the problem often traces back to the HVAC compressor.

AC Compressor Not Working But Fan Is Running: What’s the cause?

Dead Compressor

There’s a lot of reasons that your compressor breaks down. It could be a refrigerant issue: Too much, inadequate. Or obstructed lines. Or it could be that the compressor’s oil lube was inadequate. It may even be an electrical issue, such as the one discussed above.

Regardless, your compressor is dead, and your AC isn’t working, and sadly, your only choice is to replace your compressor. This can be a costly task and should only be done by a professional.

Dirt and Debris

Your air conditioner does not simply move air from one location to another; it likewise picks up particles of dust and particles in the process. The filter collects the majority of the debris. But if the filter isn’t changed regularly, the particles will build-up on the condenser coils.

Although, it’s essential to remember that even routine filter altering will not protect your A/C system. Dirt accumulation is simply something that takes place over time. But keeping your filter clean will make a big distinction.

When the air filter is dirty, the airflow is considerably reduced, and without appropriate airflow, the evaporator coil can stop working. The entire AC unit can shut down if your filter (s), condenser coil, or evaporator is filthy. It can even freeze up your ac unit.

Thermostat

This problem may not be your compressor at all! In fact, it could be as easy as a thermostat setting. Somebody might have adjusted the thermostat, and you’re expecting your Air Conditioner to turn on.

However, the information originating from your thermostat is that space is already at the correct temperature level. In which case, the air conditioning unit won’t kick-in, and neither will the compressor.

Electrical Issue

When the fan is running but the A/C compressor isn’t there’s a likelihood that electrical power isn’t reaching the outdoors unit where the compressor is located. And because the inside unit has power, the fan is still running.

First, check the circuit breaker to see if it has tripped. Or if there’s a blown fuse. Then check the wiring in between the within and outdoors system.

Unless you’re comfy dealing with electricity, it’s generally best to get in touch with a professional to help you fix an electrical problem.

Mismatched Units

Split systems have an indoor system and an outdoor unit. These systems are matched and developed to work together. Often homeowners try to replace just one of the units to either save money or because they didn’t comprehend how the system works.

This can be a costly error. If you just recently replaced either your indoor or outside system and your Air Conditioning compressor stops working, there’s a great chance that the units aren’t appropriately matched.