Lennox EL296UHV Furnace Error Codes

Two Stage Gas Furnace | Control Board: SureLight 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?
. (decimal point) Idle Mode Info — →
A CFM Setting Display Info — →
C Cooling Stage Info — →
d Dehumidification Mode Info — →
h Heat Pump Stage Info — →
H Gas Heat Stage Info — →
dF Defrost Mode Info — →
U Discharge Air Temperature Info — →
E 105 Device Communication Problem Low ✗ Call a pro →
E 110 Low Line Voltage Low ✗ Call a pro →
E 111 Line Voltage Polarity Reversed High ✗ Call a pro →
E 112 Ground Not Detected High ✗ Call a pro →
E 113 High Line Voltage Low ✗ Call a pro →
E 114 Line Voltage Frequency Out of Range Low ✗ Call a pro →
E 115 Low 24V Power Low ✗ Call a pro →
E 116 High 24V Power Low ✗ Call a pro →
E 117 Poor Ground Detected Low ✗ Call a pro →
E 120 Unresponsive Device Low ✓ Yes →
E 124 Thermostat Signal Missing High ✗ Call a pro →
E 125 Control Self-Check Failure High ✗ Call a pro →
E 126 Control Internal Communication Problem High ✗ Call a pro →
E 131 Corrupted Control Parameters Low ✗ Call a pro →
E 180 Outdoor Air Temperature Sensor Failure Low ✗ Call a pro →
E 200 Hard Lockout - Rollout Circuit High ✗ Call a pro →
E 201 Indoor Blower Communication Failure High ✗ Call a pro →
E 202 Indoor Blower Motor Mis-Match Low ✗ Call a pro →
E 203 Appliance Capacity Not Programmed High ✗ Call a pro →
E 204 Gas Valve Mis-Wired High ✗ Call a pro →
E 205 Gas Valve Control Relay Contact Shorted High ✗ Call a pro →
E 206 Gas Valve Second-Stage Relay Failure Low ✗ Call a pro →
E 207 Hot Surface Ignitor Sensed Open High ✗ Call a pro →
E 223 Low Pressure Switch Failed Open High ✗ Call a pro →
E 224 Low Pressure Switch Failed Closed Low ✗ Call a pro →
E 225 High Pressure Switch Failed Open High ✗ Call a pro →
E 226 High Pressure Switch Failed Closed Low ✗ Call a pro →
E 227 Low Pressure Switch Open During Operation High ✗ Call a pro →
E 228 Combustion Air Inducer Calibration Failure Low ✗ Call a pro →
E 229 Ignition on High Fire Info — →
E 240 Low Flame Current Low ✗ Call a pro →
E 241 Flame Sensed Out of Sequence High ✗ Call a pro →
E 250 Limit Switch Circuit Open High ✓ Yes →
E 252 Discharge Air Temperature Too High High ✓ Yes →
E 270 Soft Lockout - Ignition Failure High ✗ Call a pro →
E 271 Soft Lockout - Pressure Switch Retry Failed High ✗ Call a pro →
E 272 Soft Lockout - Pressure Switch Recycle Failed High ✗ Call a pro →
E 273 Soft Lockout - Flame Failure High ✗ Call a pro →
E 274 Soft Lockout - Limit Open High ✓ Yes →
E 275 Soft Lockout - Flame Out of Sequence High ✗ Call a pro →
E 276 Watchguard Calibration Failure Low ✗ Call a pro →
E 290 Ignitor Circuit Fault High ✗ Call a pro →
E 291 Heat Air Flow Restricted Below Minimum High ✓ Yes →
E 292 Indoor Blower Motor Unable to Start High ✗ Call a pro →
E 294 Combustion Air Inducer Over Current High ✗ Call a pro →
E 295 Indoor Blower Motor Temperature Too High High ✗ Call a pro →
E 310 Discharge Error Temperature Sensor Failure Low ✗ Call a pro →
E 311 Heat Rate Reduced to Match Airflow Low ✓ Yes →

How to Read the Error Code

The SureLight integrated control displays diagnostic codes and status information on a seven-segment LED display. Status codes indicate current operating mode. Error codes (prefixed with 'E') indicate faults. Idle mode shows a decimal point blinking at 1 Hertz (0.5 second ON, 0.5 second OFF). Status indicators use different blink patterns: 1 second ON with 0.5 second OFF for gas heat and cooling stages, 0.5 second ON with 1 second OFF for dehumidification mode, etc. Error codes display as 'E' followed by a numeric code.

About This Model

The Lennox EL296UHV is a two stage gas furnace using the SureLight Integrated Control control board.