Lennox Error Code H5
IPM current protection
Error Code Summary
| Brand | Lennox |
| Error Code | H5 |
| Meaning | IPM current protection |
| Cause | Inverter power module overcurrent detected |
| Recommended Action | Check compressor windings, wiring, and inverter board |
How to Fix Lennox Error H5
- 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 H5 means: IPM current protection. The most common cause is: Inverter power module overcurrent detected.
- 3
Take Corrective Action
Check compressor windings, wiring, and inverter board
- 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 H5 mean?
Lennox error code H5 indicates: IPM current protection. This is typically caused by: Inverter power module overcurrent detected.
How do I fix Lennox error code H5?
To fix Lennox error code H5: Check compressor windings, wiring, and inverter board. If the error persists after these steps, contact a qualified HVAC technician.
Is Lennox error code H5 serious?
Error code H5 (IPM current protection) 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.