ICP Pressure Switch for WPG4424060LKB1 — OEM w/ Tubing | Ships Today
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Overview
This genuine OEM pressure switch with tubing (part number 1178417) is the draft-proving safety control for the ICP/Heil/Tempstar WPG4424060LKB1 packaged gas furnace section. The switch monitors the negative pressure created by the inducer (draft) motor and must close before the control board will allow the igniter and gas valve to fire. This verifies the flue is clear and the combustion air path is open. A failed switch, blocked tubing, or weak inducer prevents the switch from closing, locking out the furnace as a safety measure against improper venting.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1178417 |
| Type | Air Pressure / Draft Safety Switch w/ Tubing |
| Brand | ICP / Heil / Tempstar |
| Function | Inducer Draft Proving |
| Application | Furnace Combustion Safety |
| Fits Model | WPG4424060LKB1 |
Compatibility
Direct OEM replacement for the ICP, Heil, Comfortmaker, and Tempstar WPG4424060LKB1 packaged gas/electric unit. The same pressure switch and tubing assembly serves comparable ICP-family furnaces using the same inducer setup. Confirm the pressure setpoint (in. w.c.) stamped on the original switch matches before installing.
Installation Guide
- Safety First — Shut off gas and disconnect power, then verify zero voltage with a multimeter.
- Access — Remove the furnace section access panel to reach the inducer and switch.
- Document — Photograph the tubing routing and the two electrical spade terminals before disconnecting.
- Remove — Pull the rubber tubing off the switch port, slide off the wire terminals, and unscrew the switch from its bracket.
- Install — Mount the new switch, reconnect both wires, and reattach the tubing with no kinks or cracks per your photo.
- Test — Restore gas and power, start a heat cycle, and confirm the inducer runs and the switch closes to allow ignition.
Signs You Need a Replacement
- Furnace locks out and the inducer runs but burners never light.
- Diagnostic code indicates a pressure switch open or stuck fault.
- Switch fails to close even with a clear flue and healthy inducer.
- Cracked, brittle, or disconnected pressure tubing.
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day hassle-free returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days