ICP 1-Pole 30A Contactor for WPG4364090LKA1 — 24V Coil with Shunt | Ships Today

Overview

This is a genuine OEM single-pole definite purpose contactor (Part No. 1172472) for the ICP / Tempstar / Heil WPG4364090LKA1 packaged unit. The contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. It is rated for 30 amps with a 24-volt control coil and includes an integrated shunt for the line side. When the 24V coil is energized, the magnetic core pulls the contacts closed and routes high-voltage line power to the compressor and outdoor fan; when the call ends, a spring opens the contacts. Because the contacts arc each time they make and break, they are one of the most common wear items in any HVAC condensing unit. A failed contactor is a leading cause of "the fan and compressor won't start" service calls. Typical failure symptoms include pitted or welded contacts (unit runs continuously and won't shut off), chattering or buzzing at the coil, visible burning or melting around the terminals, and ants or debris jammed between the contacts preventing them from closing.

Specifications

Compatibility

This contactor is the factory-specified replacement for the ICP / Tempstar / Heil WPG4364090LKA1 gas/electric packaged unit. The same OEM part number is shared across many ICP-family condensing and packaged units of similar tonnage. Always confirm your existing contactor is a single-pole 30A unit with a 24V coil before ordering.

Installation Guide

1. Safety First — Disconnect power at the unit disconnect and the breaker, then verify zero voltage at the contactor line terminals with a multimeter.
2. Access — Remove the control panel access cover from the unit.
3. Document — Photograph all line, load, and coil wiring before disconnecting anything.
4. Remove — Label and disconnect each wire, then unscrew the contactor from its mounting bracket.
5. Install — Mount the new contactor, then reconnect the line, compressor/fan load, and 24V coil wires exactly per your photo.
6. Test — Restore power and place a cooling call; confirm the coil pulls in cleanly and the compressor and fan energize without chatter.

Signs You Need a Replacement

• Compressor and fan won't start even though the coil is getting 24V.
• Loud buzzing, humming, or chattering at the contactor.
• Pitted, blackened, or welded contacts that keep the unit running nonstop.
• Visible burn marks, melted plastic, or a burnt smell at the terminals.

Shipping & Returns

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