ICP Pressure Switch for WPG4604130LKA1 — OEM Tubing Assembly | Ships Today

Overview

This OEM pressure switch with tubing (ICP part #1178417) is a critical safety control on the heating side of your ICP / Tempstar / Heil WPG4604130LKA1 package unit. It senses the negative pressure (draft) created by the inducer/draft motor and proves that the venting is clear before the control board allows the igniter and gas valve to fire. If proper draft isn't confirmed, the switch keeps the burners locked out to prevent dangerous flue-gas spillage. A failed switch, cracked sensing tube, or blocked vent causes the furnace to lock out with no heat. This direct-fit assembly restores safe, reliable burner sequencing.

Specifications

Compatibility

Engineered as a direct OEM replacement for the ICP/Tempstar/Heil WPG4604130LKA1 package gas/electric unit and compatible with ICP-family furnaces and package units using this draft-proving pressure switch. Match the pressure setpoint ("WC) and port configuration to the original before installing.

Installation Guide

1. Safety First — Shut off gas and power, then verify zero voltage with a multimeter.
2. Access — Remove the control compartment service panel.
3. Document — Photograph the wiring and the sensing-tube routing before disconnecting.
4. Remove — Detach the electrical leads and pressure tubing, then unscrew the old switch.
5. Install — Mount the new switch, reconnect the tubing without kinks, and reattach the leads per your photo.
6. Test — Restore gas and power, start a heat cycle, and confirm the switch closes and burners light.

Signs You Need a Replacement

• Furnace locks out on "no heat" and the inducer runs but burners never light
• Switch fails to close, or is stuck closed at rest
• Cracked, kinked, or clogged sensing tubing
• Intermittent short-cycling on the heating side

Shipping & Returns

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