ICP Pressure Switch with Tubing for WPG4604115RKB1 — OEM | Ships Today

Overview

This OEM pressure switch with tubing (part number 1178417) is the safety device that confirms proper draft and venting before the burners can light on the ICP/Tempstar/Heil WPG4604115RKB1 packaged gas/electric unit. The inducer motor creates a vacuum sensed through the tubing; when the switch closes, the control board allows ignition. A failed switch, cracked tubing, or blocked port keeps the switch open, locking out the furnace so it never fires — or causes nuisance no-heat lockouts. Replacing the switch and its tubing restores safe, reliable heating operation.

Specifications

Compatibility

Designed for the ICP/Tempstar/Heil WPG4604115RKB1 packaged gas/electric unit and related ICP-family furnaces using this draft-proving pressure switch and tubing assembly.

Installation Guide

1. Safety First — Disconnect power and shut off the gas supply, then verify zero voltage with a multimeter.
2. Access — Remove the burner/inducer compartment service panel.
3. Document — Photograph the tubing routing and electrical terminals before disconnecting.
4. Remove — Pull the tubing off the inducer port, disconnect the wires, and unscrew the old switch.
5. Install — Mount the new switch, route the new tubing without kinks, and reconnect the wires per your photo.
6. Test — Restore gas and power, call for heat, and confirm the inducer starts, the switch proves, and the burners light.

Signs You Need a Replacement

• Furnace inducer runs but burners never light
• Repeated pressure-switch lockout fault codes
• Cracked, brittle, or disconnected tubing
• Stuck-open or stuck-closed switch on testing

Shipping & Returns

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