ICP Tubing Pressure Switch for WPG3364060RKC1 — OEM 1178417 | Ships Today

Overview

This OEM tubing pressure switch (ICP part #1178417) is a critical safety device on your ICP/Tempstar/Heil WPG3364060RKC1 furnace. It monitors negative pressure created by the draft inducer motor and proves that combustion air and venting are flowing before the furnace allows ignition. If the switch fails to close, the control board will not energize the igniter or gas valve, and the unit will lock out — protecting against unsafe operation. A failed switch, blocked sensing tubing, or a weak inducer commonly causes ignition lockouts.

Specifications

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil WPG3364060RKC1 furnace and platform units calling for pressure switch 1178417. Confirm your model and the switch's pressure rating stamped on the original before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
2. Access — Remove the furnace service panel.
3. Document — Photograph the sensing tubing routing and electrical terminals before disconnecting.
4. Remove — Pull the tubing off the port, disconnect the spade terminals, and remove the mounting screws.
5. Install — Mount the new switch, reattach the tubing securely, and reconnect the terminals per your photo.
6. Test — Restore power, start a heat cycle, and confirm the switch closes and the furnace ignites normally.

Signs You Need a Replacement

• Furnace inducer runs but ignition never starts.
• Pressure switch lockout fault code on the control board.
• Switch contacts stuck open or stuck closed when tested.
• Intermittent no-heat calls in cold weather.

Shipping & Returns

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