Lennox LF24 Error Codes

Equipment type not specified · Ducted Heating

• 2 Flashes System lockout - failed to detect or sustain flame
• 3 Flashes Pressure switch failed closed before CAI is energized or failed open after CAI is…
• 4 Flashes High limit or rollout switch open
• 5 Flashes Flame sensed and gas valve not energized
• Fast Flash Normal Operation - call for heat
• Slow Flash Normal Operation - No call for heat
• Steady Off Loss of Power
• Steady On Ignition control failure

Reference only. Confirm against the manual for your exact model. Data release 105f66ecb9e96e5dc473025d.