When your Lennox heat pump model SL22KLV flashes, it’s telling you the compressor is experiencing overload protection issues, and you need to take action to prevent further damage. You’ll need to investigate further to diagnose the root cause, which could be low voltage, overcharged system, or internal issues.
Start by checking voltage, inspecting the system, and monitoring the compressor to identify the problem.
Important Point
Understanding Error Code 115
When your Lennox heat pump model SL22KLV displays error code 115, it’s indicating an overload protection issue related to the compressor.
This error code doesn’t diagnose the root cause, but rather points to a specific problem that requires further investigation.
The compressor is drawing excessive amps, which can be caused by low voltage, an overcharged system, or internal issues.
To diagnose the issue, you’ll need to rule out other possible causes, such as installation or manufacturing defects, before replacing the compressor.
Using an amp meter to check compressor amps on start-up in heat mode can help you identify the problem.
Crucial to take the necessary steps to diagnose and repair the issue to prevent further damage to your heat pump.
Also, Read: Lennox SL22KLV Heat Pump Error Code 114: Compressor Motor Fault Detected
Troubleshooting Steps for Compressor Overload
Three key areas to investigate for compressor overload are low voltage, an overcharged system, and internal issues. When troubleshooting, you’ll want to rule out these potential causes of Error Code 115.
| Troubleshooting Step | Possible Cause | Action |
|---|---|---|
| Check voltage | Low voltage | Verify voltage supply to the compressor |
| Inspect system | Overcharged system | Guarantee proper refrigerant charge and perform winterizing procedures as needed |
| Monitor compressor | Locked rotor or internal issue | Verify compressor running properly, check outdoor fan operation |
Compressor Windings and Capacitor Checks
One crucial aspect of compressor troubleshooting involves inspecting the compressor windings and capacitor for signs of failure or malfunction.
When error code 115 indicates overload protection, you should check the compressor’s electrical components.
- Verify the capacitor’s microfarad rating matches the compressor’s requirements.
- Inspect the capacitor for signs of physical damage or overheating.
- Check the compressor windings for signs of overheating, burning, or melting.
- Measure the winding resistance to certify it’s within the manufacturer’s specifications.
- Consult the Lennox SL22KLV heat pump model’s technical manual for specific guidance on compressor winding and capacitor checks.
Leak Detection and Repair
You’re moving on to leak detection and repair, a critical step in resolving the Lennox heat pump error code. This process requires attention to detail and expertise, which is why it’s often best left to repair pros. They’ll use specialized equipment for leak detection, ensuring that the compressor and entire A/C system are functioning properly. Winterizing your heat pump is also essential to prevent future overload protection issues.
| Leak Detection Methods | Common Leak Locations | Repair Complexity |
|---|---|---|
| Ultrasonic Leak Detectors | Copper lines, fittings | Medium to High |
| Pressure Testing | Schrader valves, connections | High |
| Soap Bubble Testing | Coils, evaporator units | Low to Medium |
Also, Read: Lennox SL22KLV Heat Pump Error Code 113: Blower Motor Fault Detected
Cooling Down the Compressor
Cooling down the compressor is a crucial step in resolving the Lennox heat pump error code, as overheating can lead to inaccurate diagnoses.
You’ll want to guarantee the compressor is cooled down before re-checking the windings with a meter to identify any open or short circuits.
- To cool down the compressor, use a water hose to spray water on it, guaranteeing the hose is securely positioned to prevent water damage.
- Wait for the compressor to cool down completely before re-checking the windings with a meter to identify any open or short circuits.
- After cooling down, use a meter to check for resistance, and if readings indicate OL (overload), it may indicate a short to ground.
- Cooling down the compressor allows for a more accurate diagnosis, as overheating can cause an overload error code.
- Guarantee the compressor is cooled down for at least 10-15 minutes before re-testing to get accurate readings.
Also, Read: Lennox SL22KLV Heat Pump Error Code 112: Defrost Mode Failure Detected
Frequently Asked Questions
How to Clear Lennox Error Code?
To clear the code, you’ll need to reset the system, then plunge into heat pump troubleshooting. Check error code meanings and lists to identify the root cause, and follow Lennox troubleshooting guides for a fix.
How Do You Reset a Heat Pump Compressor?
When you reset the compressor, you’re engaging heat pump troubleshooting to address potential pump motor issues or refrigerant leak detection concerns. First, shut off the breaker, wait 5 minutes, and then restore power to observe heat mode operation and defrost cycle explanation.
How Do I Reset My Lennox Compressor?
To reset your compressor, you’ll need to identify the root cause: compressor lockout, compressor failure, relay issue, sensor fault, circuit issue, thermal cutout, winding fault, inverter issue, drive fault, or overload fault, and then take corrective action to rectify the issue.
What Is the Compressor Drive Error on a Mini-Split?
“When your mini-split’s compressor drive error occurs, it’s like a traffic jam – everything comes to a halt. This compressor motor issue can be caused by a faulty capacitor problem, tripped circuit breaker, or compressor overload situation, requiring expert diagnosis to resolve.
Conclusion
When your Lennox heat pump model SL22KLV flashes code 115, don’t get stuck in the heat – act fast! Think of it like a sprinter who’s pushed too far – it needs a breather to recover. By following the troubleshooting steps outlined, you’ll be able to identify and fix the compressor overload problem, getting your heat pump back up and running smoothly.
Leave a Reply