ICP Tubing Pressure Switch for WPG3424060LKC1 — OEM Furnace Safety Switch | Ships Today

Overview

This is a genuine OEM tubing pressure switch (PN 1178417) for the ICP/Tempstar/Heil WPG3424060LKC1 packaged gas/electric unit. The pressure switch is a safety device that confirms the inducer/draft motor is producing adequate venting airflow before the control board allows the gas valve to open and the igniter to fire. It senses negative pressure through its sensing tubing and closes its contacts only when proper draft is proven. Common failure symptoms include a furnace that runs the inducer but never ignites, repeated ignition lockouts, or a unit short-cycling on heat. Note that a stuck-open switch is frequently caused by a blocked vent, cracked tubing, or a failing inducer — verify those before condemning the switch.

Specifications

Compatibility

Direct OEM replacement for the ICP/Tempstar/Heil WPG3424060LKC1 packaged gas/electric unit and compatible ICP-family models using the same switch. Always match the switch's pressure setpoint (in. w.c.) and tubing/port configuration to your original part.

Installation Guide

1. Safety First — Shut off gas and disconnect power, then verify zero voltage with a multimeter.
2. Access — Remove the service panel to reach the inducer/control area.
3. Document — Photograph the wiring and sensing-tube routing before removal.
4. Remove — Disconnect the electrical leads and sensing tubing, then unscrew the old switch.
5. Install — Mount the new switch, reattach the tubing and leads per your photo, and ensure the tube has no kinks.
6. Test — Restore gas and power, then confirm the switch proves and the furnace completes a full heat cycle.

Signs You Need a Replacement

• Inducer runs but burners never ignite
• Repeated pressure-switch lockout fault codes
• Furnace short-cycles on the heat call
• Switch fails to close even with confirmed proper draft

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.