Lennox EL296UHV Furnace Error Codes

Two Stage Gas Furnace | Control Board: icomfort-enabled SureLight Two-Stage Variable Speed Integrated Control

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Disclaimer
This information is for reference purposes only and does not guarantee accuracy or completeness. Always consult your owner's manual and a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk.

All Error Codes

Code Name Severity DIY?
Low Line Voltage Low Line Voltage Medium ✗ Call a pro →
Line Voltage Polarity Reversed Line Voltage Polarity Reversed Critical ✗ Call a pro →
Ground Not Detected Ground Not Detected Critical ✗ Call a pro →
High Line Voltage High Line Voltage Medium ✗ Call a pro →
Line Voltage Frequency Out-of-Range Line Voltage Frequency Out-of-Range Medium ✗ Call a pro →
Low 24V Low 24V Medium ✗ Call a pro →
Poor Ground Detected Poor Ground Detected Low ✗ Call a pro →
Control Self-Check Failed / Internal Hardware Error Control Self-Check Failed / Internal Hardware Error Critical ✗ Call a pro →
Hard Lockout - Rollout Circuit Open Hard Lockout - Rollout Circuit Open Critical ✗ Call a pro →
Gas Valve Mis-Wired Gas Valve Mis-Wired Critical ✗ Call a pro →
Gas Valve Control Relay Contact Shorted Gas Valve Control Relay Contact Shorted Critical ✗ Call a pro →
Gas Valve Second-Stage Relay Failure Gas Valve Second-Stage Relay Failure Medium ✗ Call a pro →
Hot Surface Ignitor Open Hot Surface Ignitor Open Critical ✗ Call a pro →
Low Pressure Switch Failed Open Low Pressure Switch Failed Open Critical ✓ Yes →
Low Pressure Switch Failed Closed Low Pressure Switch Failed Closed Critical ✗ Call a pro →
High Pressure Switch Failed Open High Pressure Switch Failed Open Critical ✓ Yes →
High Pressure Switch Failed Closed High Pressure Switch Failed Closed Critical ✗ Call a pro →
Low Pressure Switch Open During Ignition/Run Low Pressure Switch Open During Ignition/Run Critical ✓ Yes →
Ignition on High Fire - Information Only Ignition on High Fire - Information Only Low ✓ Yes →
Low Flame Current Low Flame Current Medium ✓ Yes →
Flame Sensed Out of Sequence Flame Sensed Out of Sequence Critical ✗ Call a pro →
Limit Switch Circuit Open Limit Switch Circuit Open Critical ✓ Yes →
Soft Lockout - No Flame Sensed Soft Lockout - No Flame Sensed Critical ✓ Yes →
Soft Lockout - Pressure Switch Failure During Retry Soft Lockout - Pressure Switch Failure During Retry Critical ✓ Yes →
Soft Lockout - Pressure Switch Recycle Failure Soft Lockout - Pressure Switch Recycle Failure Critical ✓ Yes →
Soft Lockout - Flame Failure Recycle Soft Lockout - Flame Failure Recycle Critical ✗ Call a pro →
Soft Lockout - Limit Circuit Recycle Soft Lockout - Limit Circuit Recycle Critical ✓ Yes →
Soft Lockout - Flame Out of Sequence Soft Lockout - Flame Out of Sequence Critical ✗ Call a pro →
Ignitor Circuit Fault Ignitor Circuit Fault Critical ✗ Call a pro →

How to Read the Error Code

Alphanumeric codes displayed on a 7-segment LED. Status codes use letters (., C, d, H, h). Error codes use E prefix followed by 3-digit number (E110, E200, etc.). Press and hold diagnostic push button to cycle through menu; release on solid 'E' to enter Error Code Recall mode (last 10 errors); release on solid 'F' for Flame Signal mode (micro amps). Press until solid three-bar symbol to exit.

About This Model

The Lennox EL296UHV is a two stage gas furnace using the icomfort-enabled SureLight Two-Stage Variable Speed Integrated Control-series integrated furnace control (IFC) board.