5 🟡 Repair Required
Lennox Error Code 5: Flame Rollout Switch Open
⚠️ Your Lennox heating system has detected a potential safety issue and has shut down. Do not attempt to operate until the problem is resolved.
How to Fix Lennox Code 5
- Check if the gas valve is closed. If it is, turn it to the 'pilot' position and try to restart your system.
- Inspect the area around your furnace for any obstructions or debris that could be causing the switch to remain open.
- Contact a professional HVAC technician if the problem persists.
What Does Lennox Error Code 5 Mean?
The Flame Rollout Switch Open error code (5) on your Lennox heating system indicates that the switch designed to prevent flame rollout is open, causing the system to shut down. This could be due to a faulty switch, improper gas pressure, or a problem with the ignition system. It's important to address this issue promptly to prevent potential safety hazards and damage to your system.
Common Causes of Lennox Code 5
- Faulty flame rollout switch
- Improper gas pressure
- Problem with the ignition system
Applicable Lennox Models
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Find a Licensed Tech Near You →Replacement Parts for Lennox Furnace Code 5
Flame Rollout Switch OEM: 30-100-0000