Lennox Error Code 5: Flame Rollout Switch Open
Warning: 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.
How to Reset Lennox Code 5
- Turn off the furnace power switch, usually located on or near the unit.
- Turn off the circuit breaker for the furnace. Wait 30 seconds.
- Restore power at the breaker and flip the furnace switch back on.
- Set the thermostat to call for heat. If the error code returns after 2-3 ignition attempts, the fault requires repair.
What does 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.
Affected Models
- SLP98V
- SLP98
- EL296V
- EL296
- SLP
- SLP
- ELP
- ELP
- NCB
- NPE
- Elite Series
- Elite Series
- Dave Lennox Signature Collection
- Dave Lennox Signature Collection
- ML195
- SLO
- EL296
- SLP98V
- EL296V
- G61
- ELP
- NCB
- NPE
- NPE
- ML195
- ML199
- Elite Series
- Dave Lennox Signature Collection
- Lennox Healthy Climate
- Elite Series
- Elite Series
- Slimline Series
- Slimline Series
- Health Saver Series
- Pace Series
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Flame Rollout Switch | 30-100-0000 | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| 1 | Ignition Failure | Warning |
| 2 | Pressure Switch Stuck Closed | Warning |
| 3 | Pressure Switch Stuck Open | Warning |
| 4 | High Limit Switch Open | Warning |
| 6 | Pressure Switch System Lockout | Warning |
| 7 | Ignition Lockout | Warning |
| 8 | Control Board Error | Warning |
| 9 | Line Voltage Polarity Incorrect | Warning |
| E250 | Lennox Code E250 - Indoor Blower Communication Error | Warning |