ICP Tubing Pressure Switch for WPG4484115RKA1 — OEM 1178417 | Ships Today

Overview

This is a genuine OEM tubing-style air pressure switch (part number 1178417) for the ICP Tempstar/Heil WPG4484115RKA1 unit. The pressure switch is a critical safety device that confirms proper venting and combustion airflow before the control board permits ignition. It senses the negative pressure created by the inducer/draft motor through a short length of tubing; when the correct pressure is detected, its internal contacts close and signal the board to proceed with the heating sequence. If adequate airflow is not present — due to a blocked flue, failed inducer, condensate backup, or cracked tubing — the switch stays open and locks out the burners to prevent unsafe operation.

Specifications

Compatibility

Engineered as a direct-fit replacement for the ICP Tempstar Heil model WPG4484115RKA1 and shared-platform packaged units that use OEM pressure switch 1178417. Always match the trip set-point and tubing configuration to your original part.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter.
2. Access — Remove the service/control panel.
3. Document — Photograph all wires and tubing routing before disconnecting.
4. Remove — Pull the spade connectors and pressure tubing, then unscrew the old switch from its bracket.
5. Install — Mount the new switch, reconnect the tubing free of kinks, and reattach the wires per your photo.
6. Test — Restore power and verify the unit proves airflow and fires normally.

Signs You Need a Replacement

• Unit locks out or displays a pressure-switch fault code on a heat call
• Inducer runs but burners never ignite
• Short cycling on the call for heat
• Switch contacts fail to close even with verified clean venting and a good inducer

Shipping & Returns

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