2
System Lockout (Retries or Recycles exceeded)
This code typically points to
- Retry/recycle lockout from ignition failures or flame loss
Next checks to confirm
- Verify gas supply and ignition sequence
- Flame loss causes recycle then lockout if ignition not achieved
Escalation
Lockout
Reset behavior
Reset by turning system power off >1 second, or removing 24VAC >1 second, or removing thermostat heat call >1 second but <20 seconds.
Urgent
Fix now