Lennox Error Code P3
Compressor current overload
Error Code Summary
| Brand | Lennox |
| Error Code | P3 |
| Meaning | Compressor current overload |
| Cause | Outdoor compressor drawing excessive current |
| Recommended Action | Check compressor windings, voltage, and mechanical condition |
How to Fix Lennox Error P3
- 1
Power Cycle the Unit
Turn off the unit at the breaker, wait 5 minutes, then restore power. Some errors auto-clear after a restart.
- 2
Identify the Issue
Error P3 means: Compressor current overload. The most common cause is: Outdoor compressor drawing excessive current.
- 3
Take Corrective Action
Check compressor windings, voltage, and mechanical condition
- 4
Test the System
After completing repairs, run the system and monitor for the error code. If it recurs, the issue may require professional diagnosis.
Safety Notice
Always disconnect power before performing any electrical work. If you're not a certified HVAC technician, contact a qualified professional for repairs involving refrigerant, electrical components, or compressor work.
Frequently Asked Questions
What does Lennox error code P3 mean?
Lennox error code P3 indicates: Compressor current overload. This is typically caused by: Outdoor compressor drawing excessive current.
How do I fix Lennox error code P3?
To fix Lennox error code P3: Check compressor windings, voltage, and mechanical condition. If the error persists after these steps, contact a qualified HVAC technician.
Is Lennox error code P3 serious?
Error code P3 (Compressor current overload) should be addressed promptly to prevent further damage to your Lennox system. Always turn off the unit if you notice unusual sounds, smells, or continued malfunction.