ICP Tubing Pressure Switch for WPG3424060RKC1 — OEM Draft Switch | Ships Today

Overview

The ICP tubing pressure switch (OEM #1178417) is the draft-proving safety switch for the WPG3424060RKC1 package unit. It monitors negative pressure created by the inducer (draft) motor through a sensing tube. Before the control allows the igniter and gas valve to energize, this switch must prove adequate venting; if it cannot, ignition is blocked to prevent unsafe operation. A failed or blocked switch is a common cause of no-heat calls, short cycling, and inducer-related lockouts. This OEM switch is calibrated to the WPG3424060RKC1's factory pressure setpoint.

Specifications

Compatibility

Built for the ICP / Tempstar / Heil WPG3424060RKC1 package gas/electric unit. Pressure switches are setpoint-specific — match the OEM number 1178417 exactly, as substituting a switch with a different W.C. rating will cause nuisance lockouts or unsafe bypass.

Installation Guide

1. Safety First — Disconnect power at the unit and shut off gas. Verify zero voltage with a multimeter.
2. Access — Remove the control/burner compartment service panel.
3. Document — Photograph the sensing tube routing and the electrical terminals before disconnecting.
4. Remove — Pull the sensing hose off the port, disconnect the spade terminals, and remove the mounting screws.
5. Install — Mount the new switch, reconnect the terminals per your photo, and firmly reattach the sensing tube with no kinks.
6. Test — Restore power and gas, run a heat cycle, and confirm the inducer proves and ignition proceeds normally.

Signs You Need a Replacement

• Furnace locks out with an inducer/pressure fault code
• Inducer runs but ignition never starts
• Short cycling on heat with intermittent no-heat calls
• Switch contacts stuck open or closed when tested with a meter

Shipping & Returns

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