ICP Pressure Switch for WPG4424060LKA1 — OEM w/ Tubing | Ships Today

Overview

This OEM pressure switch with tubing (part number 1178417) is the factory air-proving safety for the ICP/Tempstar/Heil WPG4424060LKA1 packaged unit. The pressure switch confirms that the inducer/draft blower is moving combustion air and that the venting is clear before the control allows the igniter and gas valve to fire. If the switch fails to close — or the tubing is cracked, kinked, or plugged — the furnace will not light and will lock out on a pressure fault. Symptoms include no heat, the inducer running continuously without ignition, or a control board flashing a pressure-switch error code. This kit includes the OEM switch and its connecting tubing for a complete, code-correct repair.

Specifications

Compatibility

Designed to OEM spec for the ICP/Tempstar/Heil WPG4424060LKA1 packaged gas/electric unit and compatible ICP-family furnaces using the same air-proving pressure switch. Match the switch's set point ("WC) and port configuration to your existing part before installing.

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 switch near the inducer assembly.
3. Document — Photograph the wiring and tubing routing before disconnecting.
4. Remove — Pull the spade terminals and tubing, then unscrew the old switch from its bracket.
5. Install — Mount the new switch, connect the tubing without kinks, and reconnect the wiring per your photo.
6. Test — Restore gas and power, then run a heat cycle to confirm the switch closes and the burners light.

Signs You Need a Replacement

• No heat with the inducer running but no ignition
• Control board flashing a pressure-switch fault code
• Switch fails to close or sticks closed on testing
• Cracked, kinked, or clogged switch tubing

Shipping & Returns

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