Frigidaire Air Conditioner Compressor Not Kicking On

Introduction

Your Frigidaire air conditioner keeps your home cool during hot weather. When the compressor, the heart of the cooling system, doesn’t start, your AC unit blows warm air, making your home uncomfortable. This problem is common during peak summer months when the AC unit is working harder. Addressing this promptly is crucial to prevent further damage to your unit and avoid expensive repairs. Ignoring this can lead to a complete system failure, so let’s troubleshoot it together. Explore more in our Air Conditioner Troubleshooting 4 collection.

Common Causes of frigidaire air conditioner compressor not kicking on

Here are some common reasons why your Frigidaire air conditioner compressor might not be starting:

• Dirty Air Filter: A clogged filter restricts airflow, causing the unit to overheat and preventing the compressor from starting.
• Tripped Circuit Breaker: An overloaded circuit can trip the breaker, cutting power to the compressor.
• Faulty Capacitor: The capacitor helps start the compressor motor. If it’s weak or damaged, the compressor won’t start.
• Dirty Condenser Coils: Dirty coils prevent proper heat exchange, causing the compressor to overheat.
• Frozen Evaporator Coil: Restricted airflow or low refrigerant can cause the evaporator coil to freeze, shutting down the compressor.
• Low Refrigerant: Insufficient refrigerant reduces cooling capacity and can prevent the compressor from engaging.
• Faulty Contactor: The contactor is an electrical switch that sends power to the compressor. If it fails, the compressor won’t receive power.
• Overload Protector Tripped: The overload protector is a safety device that shuts down the compressor if it gets too hot.
• Wiring Problems: Loose or corroded wiring can disrupt the electrical flow to the compressor.

Symptoms Checklist

Use this checklist to confirm if the compressor is indeed the problem:

• The air conditioner is blowing warm air.
• You hear a humming sound from the outdoor unit, but the fan doesn’t spin and the compressor doesn’t start.
• The circuit breaker for the AC unit trips frequently.
• The outdoor unit is making unusual noises.
• You notice ice forming on the copper lines of the outdoor unit.
• The fan on the outdoor unit is working, but the air isn’t cool.

How to Fix frigidaire air conditioner compressor not kicking on Step-by-Step Guide

Follow these steps to troubleshoot your Frigidaire AC compressor:

1. Turn Off the Power: Locate the breaker for your AC unit in your electrical panel and turn it off. This is crucial for your safety.
2. Check the Air Filter: Remove the air filter from the indoor unit. If it’s dirty, replace it with a new one.
3. Reset the Breaker: Go back to the electrical panel and turn the AC breaker off and then back on. Wait a few minutes before turning the AC back on.
4. Inspect the Outdoor Unit: Remove any leaves, grass, or debris from around the outdoor unit. Ensure there is at least 2 feet of clear space around the unit.
5. Clean the Condenser Coils: Use a garden hose with a gentle spray nozzle to clean the condenser coils. Spray from the inside out to remove dirt.
6. Check for Ice: Look for ice on the copper lines or the evaporator coil (indoor unit). If you see ice, turn the AC off and let it thaw for several hours.
7. Inspect the Capacitor: (If you are comfortable and knowledgeable with electrical components) Visually inspect the capacitor (usually a cylindrical component inside the outdoor unit). Look for bulging, leaking, or other signs of damage. Note: Capacitors can hold a charge even when the power is off. If unsure, skip this step.
8. Check the Contactor: (If you are comfortable and knowledgeable with electrical components) The contactor is a switch that sends power to the compressor. Visually inspect it for burnt or damaged contacts. Note: Contactors can carry high voltage. If unsure, skip this step.
9. Turn the Power Back On: After performing the above checks and letting the unit thaw if needed, turn the breaker back on.
10. Monitor the Unit: Turn on the AC and monitor the outdoor unit. Listen for the compressor to start. It may take a few minutes.
11. Check for Proper Airflow: Ensure that all vents in your home are open and unobstructed.
12. Set Thermostat Correctly: Make sure your thermostat is set to “cool” and that the temperature is set lower than the current room temperature.
13. Wait 30 Minutes: It can take up to 30 minutes for the AC to start cooling after being turned on.

Fix the Issue Without Buying Parts

Many times, a simple fix can get your compressor running again without needing new parts:

• Regular Cleaning: Clean your air filter monthly and the condenser coils annually.
• Circuit Breaker Reset: A simple reset can sometimes solve the problem.
• Thawing: If ice is present, allowing the system to thaw completely can resolve the issue.
• Visual Inspection: Regularly inspect the unit for debris and ensure proper airflow.
• Professional Maintenance: Schedule routine maintenance with a qualified HVAC technician to prevent future issues.

When Replacement Might Be Necessary

If troubleshooting doesn’t work, you might need a replacement. Here are some signs and estimated costs:

• Faulty Compressor: If the compressor is physically damaged or has a burnt-out motor, replacement is often the only option. (Estimated cost: $800-$2000)
• Failed Capacitor: A consistently failing capacitor indicates a larger problem. (Estimated cost: $100-$300)
• Damaged Contactor: A burnt or damaged contactor can prevent the compressor from starting. (Estimated cost: $50-$200)
• Refrigerant Leak: A major leak requires professional repair and refrigerant recharge, which can be costly. A very old unit may be better to replace.

Safety Warning

• Always turn off the power to the AC unit at the breaker before performing any troubleshooting.
• Avoid touching any electrical components with wet hands.
• If you are uncomfortable working with electrical components, contact a qualified HVAC technician.
• Be careful when handling condenser coil cleaning solutions, as they can be corrosive.

Tools You May Need

Here are some tools that can be helpful:

• Screwdrivers (Phillips and flathead)
• Garden hose with spray nozzle
• Air filter wrench (if applicable)
• Multimeter (for testing electrical components, only if you are qualified)
• Work gloves

FAQ

Here are some common questions and answers:

• Q: Why is my AC unit humming but not starting?
  A: This is often a sign of a failing capacitor or a locked-up compressor motor.
• Q: How often should I clean my air filter?
  A: At least once a month, or more often if you have pets or allergies.
• Q: Can low refrigerant cause the compressor to not start?
  A: Yes, low refrigerant can prevent the compressor from engaging.
• Q: What does a bad capacitor look like?
  A: It may be bulging, leaking, or have a burnt smell.
• Q: How long should I wait after resetting the breaker?
  A: Wait a few minutes before turning the AC back on to allow the system to reset.

Conclusion

Troubleshooting a Frigidaire air conditioner compressor that won’t start can seem daunting, but by following these steps, you can often identify and resolve the issue yourself. Remember to prioritize safety and take your time. If you’ve tried these steps and your compressor still isn’t working, it’s best to call a qualified HVAC technician to diagnose the problem and perform any necessary repairs. By addressing the issue promptly, you can ensure your Frigidaire AC unit keeps you cool and comfortable all summer long!