Lennox SLP HVAC System Error Codes
SLP98V.
Fuel: natural gas / propane. 10 error codes documented.
Severity breakdown:
10 warning
Error Codes
| 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 |
| 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 |
Cross-Reference: Shared Codes with Other Lennox Models