ICP Pressure Switch for WPG4304060RKB1 — Furnace Tubing Switch | Ships Today

Overview

This OEM tubing pressure switch (part #1178417) is the safety control that proves proper venting and draft before the burners are allowed to light on your ICP/Tempstar/Heil WPG4304060RKB1 packaged unit. The inducer motor creates negative pressure that, through the sensing tubing, closes the switch and signals the control board that the flue is clear. If the switch does not close, the furnace will not fire — a critical protection against carbon monoxide spillage from a blocked vent. A failed switch, cracked tubing, or a clogged port commonly causes ignition lockouts and no-heat complaints.

Specifications

Compatibility

Direct-fit OEM safety control for the ICP/Tempstar/Heil WPG4304060RKB1 packaged gas/electric unit and related ICP-family models originally equipped with part 1178417. Confirm the trip pressure rating and port/tubing configuration match your existing switch before installation.

Installation Guide

1. Safety First — Disconnect electrical power and verify zero voltage with a multimeter before servicing.
2. Access — Remove the control compartment service panel to reach the pressure switch.
3. Document — Photograph the wiring spades and tubing routing before disconnecting.
4. Remove — Pull the sensing tube and electrical leads, then unscrew the old switch from its bracket.
5. Install — Mount the new switch, reattach the tubing so it is kink-free and draining toward the inducer, and reconnect the leads.
6. Test — Restore power, start a heat cycle, and confirm the switch closes and the burners ignite normally.

Signs You Need a Replacement

• Furnace inducer runs but burners never light
• Control board flashes a pressure switch fault code
• Repeated ignition lockouts on a clear, unblocked vent
• Switch fails to close or open when tested with a manometer

Shipping & Returns

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