Will AC Fan Run if Compressor is Bad? The answer to this question is fully revealed in this comprehensive article.
Table of Contents
Impact of a Bad Compressor on the AC Fan
An air conditioning system is made up of several components, including the compressor and the fan. These two components work together to ensure that your space is adequately cooled. However, if the compressor is faulty or damaged, it will impact the entire system, including the fan.
Will AC Fan Run if Compressor is Bad?
Interestingly, the AC fan can still operate even when the compressor is not working. This is because the fan and compressor circuits are typically separate, meaning they function independently of each other.
The fan’s primary role is to circulate air, whereas the compressor’s job is to pressurize and circulate the refrigerant. Thus, a fan can continue to operate and circulate air even when the compressor fails, but the air will not be cooled.
Instances Where the Fan Continues to Run with a Faulty Compressor
There are several situations where the fan might continue to run even when the compressor is faulty. This could be due to how the thermostat is set, problems with the control board, or issues with the fan relay.
In these scenarios, the fan might continue running because it’s being instructed to do so, regardless of the state of the compressor.
Effects of a Running Fan with a Failed Compressor
There are several implications if the fan continues to run while the compressor has failed.
Inefficiency in Cooling Despite a Running Fan
One primary concern is that, while the fan will continue to circulate air, there will be no cooling because the refrigerant is not being pressurized or circulated.
Potential for Further Damage to the AC System
If the fan runs continuously in an attempt to cool your space, it could lead to further damage to the AC system. The fan motor might burn out due to the excess strain, or other components of the AC system may fail due to the unbalanced operation.
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Signs of a Bad Compressor
Before you go ahead thinking that your compressor is bad, let’s confirm that the signs you’ve noticed are indeed indicators of a bad compressor.
Physical Symptoms of a Malfunctioning Compressor
Several physical symptoms can indicate a compressor issue.
Unusual Noise from the Outdoor Unit
A failing compressor can make grinding, grating, or clicking noises. This happens due to internal components becoming loose or the motor failing.
Tripped Circuit Breaker or Blown Fuses
A compressor in bad shape may draw more current than normal, tripping the circuit breaker or blowing the fuse.
Warm Air Blowing from the AC Vents
If the compressor isn’t adequately pressurizing the refrigerant, the AC system will struggle to cool your home. This can result in warm air blowing from the vents.
Operational Indicators of a Failing Compressor
Some operational signs can also indicate a compressor problem.
Short Cycling and Other Inconsistent Cooling Patterns
Short cycling, where the AC unit frequently turns on and off, can indicate a compressor issue. This is because the compressor can’t maintain the required pressure levels, causing the AC to shut off prematurely.
Increase in Energy Bills Despite Regular AC Use
If the compressor is struggling, the AC system will use more energy to compensate. This can lead to a noticeable increase in energy bills.
