Lennox LGM036 Error Codes

Packaged HVAC · Packaged Unit

Model numbers in this family: LGM036, LGM048, LGM060, LGM074

• 3 Flashes Ignition lockout from too many trials.
• 4 Flashes Ignition lockout from too many flame losses within single call for heat.
• 5 Flashes Control hardware fault detected.
• Steady Off No power or control hardware fault.
• Steady on Power applied. Control OK.

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