Tech Tips

Pressure Switch Not Closing

FI0094

• Blocked Vent
• Undersized Vent
• Water in Pressure Switch Tubing
• Cracked Pressure Switch Tubing
• Inducer Not Running or Not Running to Full Speed
• Low Line Voltage to Inducer Motor
• Bad Inducer Motor Capacitor
• Bad Inducer Motor Bearings
• Bad Pressure Switch
• Blocked Heat Exchanger