Goodman Code 35
Pressure Limit Switch Error
What Goodman Code 35 Means
Pressure Limit Switch Error – Furnace does not ignite or shuts down during run
Common Causes
- Vent pipe blocked or kinked
- Pressure switch hose disconnected
- Furnace blower not running
- Heat exchanger cracked
- Pressure switch failure
First-Check: Step-by-Step Troubleshooting
- Inspect entire vent pipe for blockages
- Check pressure switch hose connection
- Listen for blower operation
- Test blower motor with multimeter
- Replace air filter
- Check for heat exchanger cracks
Automate Diagnostics
Upload photo → AI diagnosis + parts list + time estimate in 90 seconds
For Homeowners – Download SpotFix AI
Get instant answers before calling a technician.