1 🟡 Repair Required

Lennox Error Code 1: Ignition Failure

⚠️ Your Lennox HVAC system has encountered an ignition failure, which requires professional attention.

How to Fix Lennox Code 1

  1. Step 1: Turn off your HVAC system at the thermostat and the main gas valve to ensure safety.
  2. Step 2: Do not attempt to open the unit or touch any internal components.
  3. Step 3: Contact a professional Lennox HVAC technician to diagnose and repair the issue.
Type: led blink count Display: sight glass

What Does Lennox Error Code 1 Mean?

The error code 1 on your Lennox HVAC system indicates that the ignition system has failed to ignite the burner. This could be due to a few reasons, but it's important to note that attempting to fix this issue yourself can be dangerous and should be left to a professional technician. The ignition system is responsible for lighting the burner that heats the air in your home. If it's not working, your HVAC system won't be able to heat your home effectively.

Common Causes of Lennox Code 1

  • Faulty ignition control module
  • Dirty or malfunctioning flame sensor
  • Clogged or damaged burner
  • Low gas pressure

Applicable Lennox Models

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Replacement Parts for Lennox Furnace Code 1

Ignition Control Module OEM: 30-186-1200
Flame Sensor OEM: 30-186-1201