E272
Soft lockout — exceeded maximum number of recycles; last recycle due to pressure switch opening
This code typically points to
- Low pressure switch issue
- High pressure switch issue
- Vent restriction
- Combustion air inducer performance problem
Next checks to confirm
- Check low pressure switch operation to see if it is stuck closed on heat call
- Check high pressure switch closing pressure on heat call
- Measure operating pressure in inches w.c.
- Inspect vent and combustion air inducer for correct operation and restriction
Escalation
Soft lockout condition
Reset behavior
Clears when the heat call finishes successfully.
Urgent
Fix now