Lennox Error Code HC
PFC protection
Error Code Summary
| Brand | Lennox |
| Error Code | HC |
| Meaning | PFC protection |
| Cause | Power factor correction circuit fault |
| Recommended Action | Check PFC module on outdoor PCB, input voltage, and capacitors |
How to Fix Lennox Error HC
- 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 HC means: PFC protection. The most common cause is: Power factor correction circuit fault.
- 3
Take Corrective Action
Check PFC module on outdoor PCB, input voltage, and capacitors
- 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 HC mean?
Lennox error code HC indicates: PFC protection. This is typically caused by: Power factor correction circuit fault.
How do I fix Lennox error code HC?
To fix Lennox error code HC: Check PFC module on outdoor PCB, input voltage, and capacitors. If the error persists after these steps, contact a qualified HVAC technician.
Is Lennox error code HC serious?
Error code HC (PFC 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.