Heil Quaker ICP 17400516000020 Pressure Switch

The Heil Quaker ICP 17400516000020 Pressure Switch is a critical OEM safety component engineered for precise draft inducer motor monitoring in high-efficiency ICP condensing furnaces and MrCool heat pumps. This factory authorized part is designed to detect the specific negative pressure required to ensure safe combustion venting before allowing the ignition sequence to proceed. As a veteran technician knows, a failed pressure switch often manifests as a furnace code 31 or limit circuit lockout, signaling the draft inducer is not pulling sufficient vacuum or the internal diaphragm has lost calibration.

Constructed with a heavy-duty nitrile diaphragm and precision-calibrated electrical contacts, the 17400516000020 ensures reliable system safety by preventing backdrafting and hazardous exhaust accumulation. This OEM replacement switch is house-tested for electrical compatibility across various International Comfort Products brands, including Heil, Tempstar, and Comfortmaker. When diagnosing intermittent furnace shutdowns, always check for condensate buildup in the tubing or a blocked flue before replacing the switch, as these pressure sensors are highly sensitive to static pressure fluctuations within the venting system.

• OEM Precision: Genuine Heil Quaker ICP part ensures exact pressure set point accuracy for specific BTU cabinet sizes.
• Venting Safety: Critical for verifying inducer motor airflow, preventing carbon monoxide risks and heat exchanger damage.
• System Longevity: High-quality industrial-grade housing resists thermal stress and condensate exposure frequent in 90%+ AFUE units.
• Direct Bolt-On: Features standard spade terminal connections and hose ports for rapid field replacement during service calls.

• How do I verify if the 17400516000020 is faulty? Use a dual-port manometer to measure the inches of water column (WC) at the inducer port. If the pressure exceeds the switch rating but the contacts remain open on your multimeter, the diaphragm is likely compromised.
• What causes this switch to trip frequently? Beyond a bad inducer motor, look for blocked intake vents, clogged condensate traps, or cracked pressure tubing that leaks vacuum pressure.
• Is this switch compatible with other brands? Yes, this 17400516000020 is the direct factory authorized replacement for many Carrier, Bryant, and Payne condensing units sharing the ICP chassis.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.