Lennox Error Code 1: Ignition Failure
Warning: Your Lennox HVAC system has encountered an ignition failure, which requires professional attention.
How to Fix Lennox Code 1
- Step 1: Turn off your HVAC system at the thermostat and the main gas valve to ensure safety.
- Step 2: Do not attempt to open the unit or touch any internal components.
- Step 3: Contact a professional Lennox HVAC technician to diagnose and repair the issue.
How to Reset Lennox Code 1
- 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 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.
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 |
|---|---|---|
| Ignition Control Module | 30-186-1200 | — |
| Flame Sensor | 30-186-1201 | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| 2 | Pressure Switch Stuck Closed | Warning |
| 3 | Pressure Switch Stuck Open | Warning |
| 4 | High Limit Switch Open | Warning |
| 5 | Flame Rollout 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 |