2-FLASHMEDIUM
Pressure Switch Stuck Closed (Generic)
Pressure switch is stuck in the closed position, indicating the switch didn't open when the draft inducer shut off.
What This Error Code Means
The pressure switch remains closed when it should open, suggesting a stuck switch or wiring short.
Common Causes
- Pressure switch stuck closed
- Short in pressure switch wiring
- Defective pressure switch
- Control board issue
- Moisture in pressure switch
Affected Brands
LennoxCarrierTraneGoodmanRheemYorkBryant
How ROMA Heating Fixes This
- Test pressure switch for proper opening/closing
- Check wiring for shorts
- Replace pressure switch if stuck
- Dry out moisture in switch assembly
- Verify proper sequence of operation
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